BLACKROCK NEW YORK INSURED MUNCIPAL 2008 TERM TRUST INC
N-30D, 1998-08-28
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- --------------------------------------------------------------------------------
           THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
                       SEMI-ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISER
- --------------------------------------------------------------------------------




                                                                   July 31, 1998

Dear Shareholder:

      Domestic  bonds  provided  investors  with modest total returns during the
past six months,  as interest rates generally  fell.  Supporting the bond market
was favorable inflation news and the belief that the Federal Reserve is unlikely
to raise short-term interest rates in the immediate future.

      U.S.  economic  growth has slowed of late after a robust first  quarter of
1998.  We  expect  the  fallout  from the  Asian  fiscal  crisis  to  quash  any
significant  rebound in U.S.  growth  for the  remainder  of the year.  While we
expect  that  interest  rates  will  be  fairly  stable  in the  near-term,  our
longer-term  outlook  for the  bond  market  remains  optimistic,  based  on the
fundamentally  favorable  backdrop of low  inflation,  a currently high level of
real yields, and declining Treasury borrowing.

      As you may know, the five investment  management  firms that comprised the
PNC Asset  Management  Group have  consolidated  under  BlackRock,  resulting in
BlackRock Inc., a $119 billion money  management  firm. We look forward to using
our  global  investment  management  expertise  to present  exciting  investment
opportunities to closed-end fund shareholders in the future.

      This report  contains  comments from your Trust's  managers  regarding the
markets and  portfolio  in addition to the Trust's  financial  statements  and a
detailed  portfolio listing.  We thank you for your continued  investment in the
Trust.

Sincerely,

/s/Laurence D. Fink                                     /s/Ralph L. Schlosstein
- -------------------                                     -----------------------
Laurence D. Fink                                        Ralph L. Schlosstein
Chairman                                                President


                                       1

<PAGE>






                                                                   July 31, 1998

Dear Shareholder:

      We are pleased to present the  semi-annual  report for The  BlackRock  New
York Insured  Municipal  2008 Term Trust Inc.  ("the  Trust") for the six months
ended  June 30,  1998.  We would  like to take this  opportunity  to review  the
Trust's   stock  price  and  net  asset  value  (NAV)   performance,   summarize
developments in the fixed income markets and discuss recent portfolio management
activity.

      The  Trust is a  non-diversified  closed-end  bond fund  whose  investment
objective is to manage a portfolio of municipal debt securities that will return
$15 per share (an amount equal to the Trust's  initial public offering price) to
investors on or about  December 31, 2008,  while  providing  high current income
exempt from  regular  federal and New York State and City income tax.  The Trust
seeks to achieve this  objective by investing in high credit  quality  ("AAA" or
insured to "AAA") New York  tax-exempt  general  obligation  and  revenue  bonds
issued by city, county and state municipalities.

      The table below  summarizes the changes in the Trust's stock price and net
asset value over the period:

<TABLE>
<CAPTION>
                                             -----------------------------------------------------------------------
                                                6/30/98      12/31/97        CHANGE          HIGH           LOW
- --------------------------------------------------------------------------------------------------------------------
<S>                                             <C>            <C>            <C>            <C>           <C>     
  STOCK PRICE                                   $16.0625       $15.8750       1.18%          $16.3750      $15.4375
- --------------------------------------------------------------------------------------------------------------------
  NET ASSET VALUE (NAV)                         $16.47         $16.53        (0.36%)         $16.75        $16.21
- --------------------------------------------------------------------------------------------------------------------

</TABLE>

THE FIXED INCOME MARKETS

       After an extremely  strong first quarter of 1998,  U.S.  economic  growth
slowed during the past three months.  Despite the strong  economic growth of the
past year,  inflation  stayed  surprisingly  subdued.  One  explanation  for the
absence of inflation in the U.S.  economy  stems from the aftermath of the Asian
financial  crisis.  U.S. exports to Asia have slowed,  while the strength of the
dollar  caused cheap Asian imports to flood the U.S.  market and exert  downward
price pressure on domestic goods.

      Yields of U.S. Treasury  securities have remained in a fairly narrow range
during the period.  For example,  the yield of the 10-Year Treasury posted a net
decline of 29 basis points (0.29%),  beginning 1998 at 5.74% and closing on June
30, 1998 at 5.45%.  The past six months  represented  a  continuation  of strong
Treasury  performance,  which has been due to moderating  economic  growth,  low
inflation and a "flight to quality" from investors  seeking a safe haven in U.S.
Treasury  securities.  Continued  expectations  that the Asian  crisis will slow
economic  growth and force the Fed to leave the  Federal  funds  rate  unchanged
provided  additional support to the bond market. With Treasury supply waning due
to a  surplus  in  the  federal  budget  and an  increased  foreign  demand  for
Treasuries  due to their  U.S.  government  backing  and  relatively  attractive
yields,  we anticipate a positive  environment for Treasuries for the balance of
1998.

                                       2
<PAGE>


      New York State's economy  remained strong over the past six months and the
State's  fiscal year 1998 budget  surplus is  projected  at $1.9  billion.  Wall
Street's  prosperity,  fueled by the  continued  bull  market,  has  resulted in
increased tax revenues that have contributed to the State's income growth. These
increased  revenues  have  mitigated  the impact of Governor  Pataki's tax cuts;
further  tax  reductions  have  been  proposed  to  make  New  York  State  more
economically competitive.

      Municipal bonds underperformed the taxable domestic bond market during the
past six months,  returning 2.69% (as measured by the LEHMAN BROTHERS  MUNICIPAL
INDEX) versus the LEHMAN  BROTHERS  AGGREGATE  INDEX'S 3.91% on a pre-tax basis.
The main forces behind municipal bond  underperformance were increased municipal
bond supply (fueled by the lowest municipal  interest rates since the 1960s) and
retail  investor  focus on the equity  markets.  We believe that  municipals are
attractively  valued versus Treasuries and our outlook for municipal  securities
is favorable.  The credit quality of most issuers remains strong,  and we expect
that the attractive  taxable  equivalent yields offered by municipal  securities
should bring investors back into the market.

THE TRUST'S PORTFOLIO AND INVESTMENT STRATEGY

      The Trust's portfolio is actively managed to diversify exposure to various
sectors,  issuers,  revenue sources and security types.  BlackRock's  investment
strategy  emphasizes  a  relative  value  approach,  which  allows  the Trust to
capitalize  upon  changing  market  conditions  by rotating  municipal  sectors,
credits  and  coupons.  Additionally,  the  Trust  emphasizes  securities  whose
maturity  dates match the  termination  date of the Trust.  We have continued to
minimize trading  activity in the Trust during the period,  as the market prices
of a significant portion of the portfolio's bonds are currently above the prices
at which  they  were  bought.  A bond sold at a gain  would  result in the Trust
realizing  a  capital  gain,  which  may  require  a  taxable   distribution  to
shareholders.  Since one of the Trust's primary investment  objectives is to pay
out tax-exempt income, we believe that waiting to restructure the portfolio in a
higher interest rate environment remains the most prudent strategy.

      The  following  chart  compares the Trust's  current and December 31, 1997
asset composition:

- --------------------------------------------------------------------------------
         THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
- --------------------------------------------------------------------------------
SECTOR                                     JUNE 30, 1998   DECEMBER 31, 1997
- --------------------------------------------------------------------------------
Transportation                                  26%               26%
- --------------------------------------------------------------------------------
County, City and State                          21%               21%
- --------------------------------------------------------------------------------
Water & Sewer                                   14%               14%
- --------------------------------------------------------------------------------
Lease Revenue                                   13%               13%
- --------------------------------------------------------------------------------
Hospital                                        10%               10%
- --------------------------------------------------------------------------------
Tax Revenue                                      6%                6%
- --------------------------------------------------------------------------------
Housing                                          5%                5%
- --------------------------------------------------------------------------------
Other                                            5%                5%
- --------------------------------------------------------------------------------

      Additionally,  the Trust employs  leverage to enhance its income by paying
the Trust's preferred shareholders  short-term municipal rates and investing the
proceeds in longer maturity issues which have higher yields. The Trust's ability
to pay high monthly income may be affected by the profitability of its leverage.
The  Federal  Reserve's  neutral  interest  rate  policy has allowed the Trust's
leverage costs to remain  reasonable.  At the present,  we believe that leverage
will continue to positively  contribute to the Trust's  long-term income earning
ability.


                                       3


<PAGE>


      We look forward to managing  the Trust to benefit  from the  opportunities
available in the fixed income markets and to meet its investment objectives.  We
thank you for your  investment in the BlackRock New York Insured  Municipal 2008
Term  Trust  Inc.  Please  feel free to contact  our  marketing  center at (800)
227-7BFM (7236) if you have specific  questions which were not addressed in this
report.

Sincerely,

/s/Robert S. Kapito                    /s/Kevin Klingert
- -------------------                    -----------------
Robert S. Kapito                       Kevin Klingert
Vice Chairman and Portfolio Manager    Managing Director and Portfolio Manager
BlackRock Financial Management, Inc.   BlackRock Financial Management, Inc.

- --------------------------------------------------------------------------------
          THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
- --------------------------------------------------------------------------------
Symbol on New York Stock Exchange:                                    BLN
- --------------------------------------------------------------------------------
Initial Offering Date:                                        September 18, 1992
- --------------------------------------------------------------------------------
Closing Stock Price as of 6/30/98:                                  $16.0625
- --------------------------------------------------------------------------------
Net Asset Value as of 6/30/98:                                      $16.47
- --------------------------------------------------------------------------------
Yield on Closing Stock Price as of 6/30/98 ($16.0625)1:               5.32%
- --------------------------------------------------------------------------------
Current Monthly Distribution per Common Share:2                      $0.07125
- --------------------------------------------------------------------------------
Current Annualized Distribution per Common Share:2                   $0.855
- --------------------------------------------------------------------------------



- -----------
1 Yield on Closing Stock Price is  calculated by dividing the current annualized
 distribution per share by the closing stock price per share.

2 Distribution is not constant and is subject to change.


                                       4


<PAGE>



<TABLE>
<CAPTION>

- ---------------------------------------------------------------------------------------------------------------------------
THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
PORTFOLIO OF INVESTMENTS JUNE 30, 1998 (UNAUDITED)
- ---------------------------------------------------------------------------------------------------------------------------
           PRINCIPAL                                                                           OPTION
            AMOUNT                                                                              CALL          VALUE
  RATING*    (000)                                 DESCRIPTION                               PROVISIONS++    (NOTE 1)
- ---------------------------------------------------------------------------------------------------------------------------
                     LONG-TERM INVESTMENTS--143.7%
                     NEW YORK--140.8%
<S>        <C>                                                                             <C>             <C>
   AAA     $ 1,075   Babylon, G.O., Ser. A, 5.875%, 1/15/09, AMBAC .....................   01/04 at 102    $ 1,160,946
   AAA         785   Erie Cnty., Ser. B, 5.70%, 5/15/08, MBIA ..........................   05/04 at 102        847,486
                     Met. Trans. Auth. Rev., MBIA,
   AAA       2,500      Commuter Fac., Ser. A, 6.10%, 7/01/08 ..........................   No Opt. Call      2,828,675
   AAA      26,075      Ser. K, 6.00%, 7/01/08 .........................................   No Opt. Call     29,182,879
                     Mt. Sinai Union Free Sch. Dist. Rev., AMBAC,
   AAA         935      6.00%, 2/15/08 .................................................   No Opt. Call      1,048,415
   AAA         930      6.10%, 2/15/09 .................................................   No Opt. Call      1,051,532
   AAA       1,075      6.10%, 2/15/10 .................................................   No Opt. Call      1,220,490
   AAA      10,500   Mun. Asst. Corp., City of New York, Ser. A, 6.00%, 7/01/08, FGIC ..   07/01 at 100     10,959,270
   AAA       2,060   Nassau Cnty. G.O., Ser. N, 6.125%, 10/15/02+, AMBAC ...............         N/A         2,272,129
                     New York City, G.O.,
   AAA      10,000      Ser. B, 6.25%, 10/01/08, FSA ................................... 10/02 at 101.5     10,827,400
   AAA       5,500      Ser. C, 6.00%, 8/01/09, AMBAC .................................. 08/02 at 101.5      5,848,480
   AAA       4,120      Ser. C-1, 6.25%, 8/01/02+, FSA .................................        N/A          4,506,003
   AAA       4,950      Ser. C-1, 6.375%, 8/01/02+, MBIA ...............................        N/A          5,436,733
   AAA          50      Ser. C-1, 6.375%, 8/01/08, MBIA ................................ 08/02 at 101.5         54,245
   AAA          95      Ser. C-1, 6.25%, 8/01/10, FSA .................................. 08/02 at 101.5        102,076
   AAA       3,000      Ser. D, 5.75%, 8/15/07, MBIA ................................... 08/03 at 101.5      3,199,950
   AAA       6,895      Ser. E, 6.20%, 8/01/08, MBIA ...................................   No Opt. Call      7,779,077
                     New York City Hlth. & Hosp. Corp. Rev.,
   AAA       6,000      5.60%, 2/15/08, CONNIE LEE .....................................   02/03 at 102      6,369,600
   AAA       2,750      Ser. A, 6.00%, 2/15/07, CAPMAC .................................   02/03 at 102      2,969,532
                     New York City Mun. Wtr. Fin. Auth. Rev., Wtr. & Swr. Sys., Ser. A,
   AAA      11,500      Zero Coupon, 6/15/09, MBIA .....................................   No Opt. Call      6,932,545
   AAA      11,560      6.15%, 6/15/07, FGIC ........................................... 06/02 at 101.5     12,447,808
   AAA       1,710      6.00%, 6/15/08, FGIC ...........................................   No Opt. Call      1,910,121
   AAA       2,000      5.50%, 6/15/11, AMBAC .......................................... 06/02 at 101.5      2,095,860
                     New York St., G.O., AMBAC,
   AAA       4,030      6.75%, 8/01/07 .................................................   08/01 at 102      4,374,323
   AAA       1,000      5.50%, 6/15/09 .................................................   06/03 at 102      1,054,720
                     New York St. Dorm. Auth. Rev.,
   AAA       1,185      City Univ., 6.125%, 7/01/04+, AMBAC ............................         N/A         1,323,100
   AAA       1,965      City Univ., 6.125%, 7/01/08, AMBAC .............................   07/04 at 102      2,153,129
   AAA       5,375      New York Univ., 6.25%, 7/01/09, FGIC ...........................   07/01 at 102      5,752,594
   AAA       1,600      St. Univ. Ed. Fac., 5.50%, 5/15/07, FGIC .......................   No Opt. Call      1,717,360
   AAA       2,500      St. Univ. Ed. Fac., Ser. A, 5.50%, 5/15/08, AMBAC ..............   No Opt. Call      2,689,875
   AAA       6,000      St. Univ. Ed. Fac., Ser. A, 5.50%, 5/15/08, CONNIE LEE .........   No Opt. Call      6,460,620
   AAA       5,000      St. Univ. Ed. Fac., Ser. A, 5.50%, 5/15/08, FGIC ...............   No Opt. Call      5,379,750
   AAA       5,000      St. Univ. Ed. Fac., Ser. A, 5.50%, 5/15/09, AMBAC ..............   No Opt. Call      5,387,950
   AAA       1,800      Union Coll., 5.75%, 7/01/10, FGIC ..............................   07/02 at 102      1,890,558
   AAA         500      W K Nursing Home, 5.65%, 8/01/09, FHA ..........................   08/06 at 102        533,800
   AAA       5,000   New York St. Environ. Fac. Corp., P.C.R., Ser. D, 6.60%, 5/15/08 ..   11/04 at 102      5,694,500
                     New York St. Hsg. Fin. Agcy. Rev.,
   AAA       1,985      Hsg. Proj. Mtge., Ser A., 5.80%, 5/01/09, FSA ..................   05/06 at 102      2,130,639
   AAA       4,910      Hsg. Proj. Mtge., Ser A., 5.80%, 11/01/09, FSA .................   05/06 at 102      5,270,247
   AAA       4,565      Multifamily Mtge. Hsg, Ser C., 6.30%, 8/15/08, FHA .............   08/02 at 102      4,911,210

                       See Notes to Financial Statements.


                                       5

</TABLE>


<PAGE>


<TABLE>
<CAPTION>


- ---------------------------------------------------------------------------------------------------------------------------
           PRINCIPAL                                                                            OPTION
            AMOUNT                                                                               CALL          VALUE
  RATING*    (000)                                 DESCRIPTION                               PROVISIONS++    (NOTE 1)
- ---------------------------------------------------------------------------------------------------------------------------


                     New York St. Med. Care Fac. Fin. Agcy. Rev.,
<S>        <C>                                                                             <C>             <C>
   AAA     $ 3,000      Mental Hlth. Fac., 5.25%, 8/15/07, FGIC ........................   02/04 at 102    $ 3,163,440
   AAA       6,190      Mental Hlth. Svcs. Impvt., Ser. D, 6.00%, 8/15/08, AMBAC .......   08/02 at 102      6,678,267
   AAA       5,000      New York Hosp., Ser. A, 6.50%, 2/15/05+, AMBAC .................         N/A         5,717,700
   AAA         250   New York St. Pwr. Auth. Rev., Series CC, 5.125%, 1/01/11, MBIA ....   No Opt. Call        259,948
                     New York St. Thruway Auth. Rev.,
   AAA       1,000      Hwy. & Brdg. Trust Fund, Ser. B, 6.00%, 4/01/04+, FGIC .........         N/A         1,106,590
   AAA       5,000      Hwy. & Brdg. Trust Fund, Ser. A, 5.625%, 4/01/08, AMBAC ........   04/04 at 102      5,394,700
   AAA      10,060      Ser. A, 5.875%, 1/01/02+, FGIC .................................         N/A        10,815,949
   AAA       6,940      Service Contract, 5.75%, 4/01/09, MBIA .........................   04/04 at 102      7,476,254
                     New York St. Urban Dev. Corp. Rev., Correctional Fac.,
   AAA       1,750      5.625%, 1/01/07, AMBAC .........................................   01/03 at 102      1,868,178
   AAA       1,460      5.625%, 1/01/07, FSA ...........................................   01/03 at 102      1,555,513
   AAA       2,000      Ser. A, 5.50%, 1/01/09, AMBAC ..................................   No Opt. Call      2,152,800
   AAA       2,055   Port Auth. of New York & New Jersey, Seventy-Second Ser., 
                        7.40%,10/01/02+, AMBAC .........................................         N/A         2,335,939
                     Suffolk Cnty, G.O., FGIC,
   AAA         620      Ser. B, 6.00%, 5/01/07 .........................................   05/02 at 102        666,116
   AAA         615      Ser. B, 6.05%, 5/01/08 .........................................   05/02 at 102        661,365
   AAA         465      Ser. C, 6.00%, 6/15/07 .........................................   06/02 at 102        506,794
   AAA         430      Ser. C, 6.05%, 6/15/08 .........................................   06/02 at 102        469,195
   AAA       5,000   Suffolk Cnty. Ind. Dev. Agcy. Rev., Southwest, 
                        6.00%, 2/01/08, FGIC ...........................................   No Opt. Call      5,583,900
                     Suffolk Cnty. Wtr. Auth. Rev., Ser. C, AMBAC,
   AAA       1,285      5.75%, 6/01/02+ ................................................         N/A         1,384,074
   AAA       1,675      5.75%, 6/01/08 .................................................   06/02 at 102      1,780,358
                     Triborough Brdg. & Tunl. Auth. Rev.,
   AAA       8,110      6.20%, 1/01/08, FGIC ........................................... 01/02 at 101.5     8,695,055
   AAA       6,500      6.25%, 1/01/12, AMBAC .......................................... 01/02 at 101.5     6,981,520
   AAA       7,500      Ser. X, 6.00%, 1/01/07, AMBAC ..................................   No Opt. Call      7,888,800
                                                                                                          ------------
                                                                                                           260,918,082
                                                                                                          ------------
                     PUERTO RICO--2.9%
   AAA       5,000   Puerto Rico Comnwlth. G.O., Ser. A, 6.25%, 7/01/10, FSA ........... 07/02 at 101.5     5,356,100
                                                                                                          ------------
                     TOTAL INVESTMENTS--143.7% (COST $241,780,351) .....................                   266,274,182
                     Other assets in excess of liabilities--2.5% .......................                     4,588,099
                     Liquidation value of preferred stock--(46.2)% .....................                   (85,500,000)
                                                                                                          ------------
                     NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS--100% ................                  $185,362,281
                                                                                                          ============


- -------------------------
 * Rating: Using the higher of Standard & Poor's, Moody's or Fitch's rating.
 + This bond is prerefunded. See glossary for definition.

++ Option call provisions: date (month/year) and price of the earliest optional call or redemption. There may be other
   call provisions at varying prices at later dates.

========================================================================================================================
                              THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:
             AMBAC -- American Municipal Bond Assurance Corporation    FGIC-- Financial Guaranty Insurance Company
            CAPMAC -- Capital Markets Assurance Corporation             FSA-- Financial Security Assurance
        CONNIE LEE -- College Construction Loan Insurance Association  G.O.-- General Obligation Bond
               FHA -- Federal Housing Administration                   MBIA-- Municipal Bond Insurance Association
                                                                     P.C.R.-- Pollution Control Revenue
========================================================================================================================

</TABLE>



                       See Notes to Financial Statements.

                                       6

<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK NEW YORK INSURED
MUNICIPAL 2008 TERM TRUST INC.
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1998 (UNAUDITED)
- --------------------------------------------------------------------------------


ASSETS
Investments, at value (cost $241,780,351)
  (Note 1) ...............................  $266,274,182
Interest receivable ......................     5,097,415
Other assets .............................        13,105
                                            ------------
                                             271,384,702
                                            ------------
LIABILITIES
Due to custodian                                 223,747
Investment advisory fee payable (Note 2) .        78,181
Dividends payable--preferred stock .......        44,718
Administration fee payable (Note 2) ......        22,337
Other accrued expenses ...................       153,438
                                            ------------
                                                 522,421
                                            ------------
NET INVESTMENT ASSETS ....................  $270,862,281
                                            ============
Net investment assets were comprised of:
  Common stock:
    Par value (Note 4) ...................  $    112,571
    Paid-in capital in excess of par .....   156,370,725
    Preferred stock (Note 4) .............    85,500,000
                                            ------------
                                             241,983,296
  Undistributed net investment income ....     4,434,083
  Accumulated net realized loss ..........       (48,929)
  Net unrealized appreciation ............    24,493,831
                                            ------------
  Net investment assets, June 30, 1998 ...  $270,862,281
                                            ============
  Net assets applicable to common
    shareholders .........................  $185,362,281
                                            ============
Net asset value per common share:
  ($185,362,281  / 11,257,093 shares of
  common stock issued and outstanding) ...        $16.47
                                                  ======



- --------------------------------------------------------------------------------
THE BLACKROCK NEW YORK INSURED
MUNICIPAL 2008 TERM TRUST INC.
STATEMENT OF OPERATIONS
SIX MONTHS ENDED JUNE 30, 1998 (UNAUDITED)
- --------------------------------------------------------------------------------


NET INVESTMENT INCOME
Income
  Interest and discount earned ............   $7,412,487
                                              ----------
Expenses
  Investment advisory .....................      473,071
  Administration ..........................      135,163
  Auction agent ...........................      126,000
  Custodian ...............................       42,000
  Reports to shareholders .................       30,000
  Directors ...............................       20,000
  Audit ...................................       16,000
  Transfer agent ..........................       10,000
  Legal ...................................        6,000
  Miscellaneous ...........................       21,507
                                              ----------
    Total expenses ........................      879,741
                                              ----------
Net investment income .....................    6,532,746
                                              ----------
UNREALIZED LOSS ON
  INVESTMENTS (NOTE 3)
  Net change in unrealized appreciation on
    investments ...........................     (988,516)
                                              ----------
NET INCREASE IN NET INVESTMENT
  ASSETS RESULTING FROM OPERATIONS ........   $5,544,230
                                              ==========

                       See Notes to Financial Statements.


                                       7

<PAGE>



<TABLE>
<CAPTION>

- --------------------------------------------------------------------------------------------------------------------
THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS (UNAUDITED)
- --------------------------------------------------------------------------------------------------------------------
                                                                                     SIX MONTHS          YEAR ENDED
                                                                                        ENDED           DECEMBER 31,
                                                                                    JUNE 30, 1998           1997
                                                                                    -------------       ------------
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
OPERATIONS:
<S>                                                                                 <C>                  <C>        
  Net investment income ........................................................    $ 6,532,746          $13,045,382
  Net realized gain on investments .............................................             --                9,392
  Net change in unrealized appreciation on investments .........................       (988,516)           8,222,820
                                                                                    ------------         -----------
  Net increase in net investment assets resulting from operations ..............       5,544,230          21,277,594
                                                                                    ------------        ------------
DIVIDENDS AND DISTRIBUTIONS:
  To common shareholders from net investment income ............................      (4,812,292)         (9,617,474)
  To common shareholders from net realized gain on investments .................             --              (12,203)
  To preferred shareholders from net investment income .........................      (1,435,791)         (2,948,583)
  To preferred shareholders from net realized gain on investments ..............             --               (3,745)
                                                                                    ------------        ------------
      Total dividends and distributions ........................................      (6,248,083)        (12,582,005)
                                                                                    ------------        ------------
      Total increase (decrease) ................................................        (703,853)          8,695,589
                                                                                    ------------        ------------
NET INVESTMENT ASSETS
Beginning of period ............................................................     271,566,134         262,870,545
                                                                                    ------------        ------------
End of period ..................................................................    $270,862,281        $271,566,134
                                                                                    ============        ============


</TABLE>

                       See Notes to Financial Statements.

                                       8

<PAGE>



<TABLE>
<CAPTION>

- --------------------------------------------------------------------------------------------------------------------------
THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
FINANCIAL HIGHLIGHTS (UNAUDITED)
- --------------------------------------------------------------------------------------------------------------------------
                                                        SIX MONTHS
                                                           ENDED                      YEAR ENDED DECEMBER 31,
                                                                      ----------------------------------------------------
                                                       JUNE 30, 1998  1997       1996       1995         1994        1993
                                                       -------------  ----       ----       ----         ----        ----
PER COMMON SHARE OPERATING
  PERFORMANCE:
<S>                                                      <C>         <C>         <C>      <C>          <C>          <C>     
Net asset value, beginning of the period ...........     $  16.53    $ 15.76     $ 16.11  $  13.77     $  16.19     $  14.33
                                                         --------    -------     -------  --------     --------     --------
  Net investment income ............................         0.58       1.16        1.15      1.15         1.14         1.14
  Net realized and unrealized gain (loss) 
    on investments .................................        (0.08)      0.73       (0.33)     2.33        (2.49)        1.79
                                                         --------    -------     -------  --------     --------     --------
Net increase (decrease) from investment 
    operations .....................................         0.50       1.89        0.82      3.48        (1.35)        2.93
                                                         --------    -------     -------  --------     --------     --------
Dividends from net investment income to:
  Preferred shareholders ...........................        (0.13)     (0.26)      (0.25)    (0.29)       (0.21)       (0.17)
  Common shareholders ..............................        (0.43)     (0.86)      (0.85)    (0.85)       (0.86)       (0.86)
Distributions from net realized gain on 
    investments to:
  Preferred shareholders ...........................           --         **       (0.02)       --           --        (0.01)
  Common shareholders ..............................           --        ***       (0.05)       --           --        (0.03)
Distributions in excess of net realized gain 
    on investments to:
  Preferred shareholders ...........................           --         --          --        **           **           --
  Common shareholders ..............................           --         --          --       ***          ***           --
                                                         --------    -------     -------  --------     --------      -------
Total dividends and distributions ..................       (0. 56)     (1.12)      (1.17)    (1.14)       (1.07)       (1.07)
                                                         --------    -------     -------  --------     --------      -------
Net asset value, end of period* ....................      $ 16.47    $ 16.53     $ 15.76   $ 16.11      $ 13.77      $ 16.19
                                                         ========    ========    ========  ========     ========     =======
Market value, end of period* .......................      $ 16.06    $ 15.88     $ 15.13   $ 14.63      $ 12.50      $ 15.00
                                                         ========    ========    ========  ========     ========     =======
TOTAL INVESTMENT RETURN+ ...........................         3.92%     10.93%       9.60%    24.19%      (11.35%)      14.89%
                                                         ========    ========    ========  ========     ========     =======
RATIOS TO AVERAGE NET ASSETS OF
  COMMON SHAREHOLDERS: ++
Expenses ...........................................         0.96%+++   0.98%       1.03%     1.05%        1.08%        0.95%
Net investment income before preferred 
    stock dividends ................................         7.10%+++   7.26%       7.36%     7.54%        7.80%        7.31%
Preferred stock dividends ..........................         1.56%+++   1.64%       1.70%     1.87%        1.46%        1.15%
Net investment income available to common 
    shareholders ...................................         5.54%+++   5.62%       5.66%     5.67%        6.34%        6.16%
SUPPLEMENTAL DATA:
Average net assets of common shareholders 
    (in thousands) .................................     $185,509   $179,797    $176,229  $172,037     $164,792     $174,881
Portfolio turnover .................................            0%         2%         10%       12%          50%          14%
Net assets of common shareholders, end of period
  (in thousands) ...................................     $185,362   $186,066    $177,371  $181,380     $155,064     $182,198
Preferred stock outstanding (in thousands) .........     $ 85,500   $ 85,500    $ 85,500  $ 85,500     $ 85,500     $ 85,500
Asset coverage per share of preferred stock, 
   end of period # .................................     $ 79,199   $ 79,406    $ 76,863  $ 78,035     $140,681     $156,549

</TABLE>

- ------------
   * Net asset value and market value are  published in THE  WALLSTREET  JOURNAL
     each Monday.
  ** Actual amount paid  to  preferred  shareholders  was $0.0003,  $0.00041 and
     $0.00054 per common share for the  fiscal  years  ended  December 31, 1997,
     1995 and 1994, respectively.
 *** Actual  amount was $0.0011,  $0.0012 and $0.0025 per common  share  for the
     fiscal years ended  December 31, 1997,  1995 and 1994, respectively.
   + Total investment  return is calculated  assuming a purchase of common stock
     at the  current  market  price on the first  day and a sale at the  current
     market value on the last day of the period. Dividends and distributions, if
     any,  are assumed for purposes of this  calculation,  to be  reinvested  at
     prices  obtained  under  the  Trust's  dividend  reinvestment  plan.  Total
     investment return does not reflect brokerage commissions.
  ++ Ratios  calculated  on the basis of income and expenses  applicable to both
     the common and preferred shares, and preferred stock dividends, relative to
     the average net assets of common shareholders.
 +++ Annualized
   # A stock split occurred on July 24, 1995 (Note 4).

The information above represents the unaudited operating  performance data for a
share of common stock outstanding,  total investment  return,  ratios to average
net  assets  and  other  supplemental  data  for  the  periods  indicated.  This
information has been determined based upon financial information provided in the
financial statements and market value data for Trust's shares.

                        See Notes to Financial Statements.

                                       9
<PAGE>


- --------------------------------------------------------------------------------
THE BLACKROCK NEW YOR KINSURED
MUNICIPAL 2008 TERM TRUST INC.
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
- --------------------------------------------------------------------------------


NOTE 1. ORGANIZATION & ACCOUNTING POLICIES

The  BlackRock  New York Insured  Municipal  2008  POLICIES Term Trust Inc. (the
"Trust"),  was  organized  in  Maryland  on August 7, 1992 as a  non-diversified
closed-end management investment company. The Trust's investment objective is to
manage a non-diversified  portfolio of high quality  securities that will return
$15 per share to investors on or about December 31, 2008 while providing current
income  exempt  from  regular  federal,  New York State and New York City income
taxes. The ability of issuers of debt securities held by the Trust to meet their
obligations  may be affected by economic  developments  in the state, a specific
industry  or  region.  No  assurance  can be given that the  Trust's  investment
objective will be achieved.

    The following is a summary of significant  accounting  policies  followed by
the Trust.

SECURITIES VALUATION:  Municipal securities  (including  commitments to purchase
such  securities  on a  "when-issued"  basis)  are valued on the basis of prices
provided  by  a  pricing  service  which  uses   information   with  respect  to
transactions  in  bonds,  quotations  from  bond  dealers,  market  transactions
incomparable   securities  and  various   relationships  between  securities  in
determining values. Any securities or other assets for which such current market
quotations  are not readily  available are valued at fair value as determined in
good faith under procedures established by and under the general supervision and
responsibility of the Trust's Board of Directors.

   Short-term securities which mature in more than 60 days are valued at current
market  quotations.  Short-term  securities  which mature in 60 days or less are
valued at amortized  cost, if their term to maturity from date of purchase is 60
days or less, or by amortizing their value on the 61st day prior to maturity, if
their original term to maturity from date of purchase exceeded 60 days.

SECURITIES  TRANSACTIONS  AND INVESTMENT  INCOME:  Securities  transactions  are
recorded  on the trade  date.  Realized  and  unrealized  gains and  losses  are
calculated  on the  identified  cost basis.  Interest  income is recorded on the
accrual  basis and the Trust  amortizes  premium  and  accretes  original  issue
discount on securities purchased using the interest method.

FEDERAL  INCOME  TAXES:  It is the  Trust's  intention  to  continue to meet the
requirements  of the Internal  Revenue Code  applicable to regulated  investment
companies  and to distribute  sufficient  net income to  shareholders.  For this
reason and because  substantially  all of the Trust's  gross income  consists of
tax-exempt interest, no federal income tax provision is required.

DIVIDENDS  AND  DISTRIBUTIONS:   The  Trust  declares  and  pays  dividends  and
distributions to common  shareholders  monthly from net investment  income,  net
realized short-term capital gains and other sources, if necessary. Net long-term
capital  gains,  if any,  in excess  of loss  carryforwards  may be  distributed
annually.  Dividends and  distributions  are recorded on the  ex-dividend  date.
Dividends and distributions to preferred shareholders are accrued and determined
as described in Note 4.

ESTIMATES:  The preparation of financial statements in conformity with generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting period. Actual results could differ from those estimates.

NOTE 2. AGREEMENTS

The  Trust  has  an  Investment  Advisory  Agreement  with  BlackRock  Financial
Management,  Inc.  (the  "Adviser"),  a  wholly-owned  corporate  subsidiary  of
BlackRock  Advisors,  Inc.,  an indirect  majority-owned  subsidiary of PNCBank,
N.A., and an Administration Agreement with Princeton  Administrators,  L.P. (the
"Administrator"),  an indirect  wholly-owned  subsidiary of Merrill Lynch & Co.,
Inc.

   The  investment  advisory  fee paid to the  Adviser  is  computed  weekly and
payable  monthly at an annual  rate of 0.35% of the Trust's  average  weekly net
investment  assets.  The  administration  fee paid to the  Administrator is also
computed  weekly and  payable  monthly at an annual rate of 0.10% of the Trust's
average weekly net investment assets.

   Pursuant to the agreements,  the Adviser provides  continuous  supervision of
the investment  portfolio and pays the compensation of officers of the Trust who
are  affiliated  persons of the Adviser.  The  Administrator  pays occupancy and
certain  clerical and accounting  costs of the Trust.  The Trust bears all other
costs and  expenses.

NOTE 3. PORTFOLIO

For the six months ended June 30,  1998,  the Trust,  other than for  short-term
investments, had no purchases or sales.

   The federal income tax basis of the Trust's  investments at June 30, 1998 was
substantially  the same as the basis for financial  reporting,  and accordingly,
gross and net  unrealized  appreciation  for  federal  income tax  purposes  was
$24,493,831.

                                       10
<PAGE>


NOTE 4. CAPITAL

There are 200 million shares of $.01 par value common stock  authorized.  Of the
11,257,093  common shares  outstanding at June 30, 1998, the Adviser owned 7,093
shares.  As of June 30, 1998, there were 3,420 preferred  shares  outstanding as
follows: Series F28-1,710 and Series F7-1,710.

   The Trust may classify or reclassify any unissued shares of common stock into
one or more  series  of  preferred  stock.  On  November  23,  1992,  the  Trust
reclassified  1,710 shares of common stock and issued 2 series of Auction Market
Preferred Stock ("Preferred Stock") as follows:  Series F28--855 shares,  Series
F7--855 shares. The Preferred Stock has a liquidation value of $25,000 per share
plus any accumulated but unpaid dividends. On May 16, 1995 shareholders approved
a proposal to split each share of the Trust's  Auction Rate Municipal  Preferred
Stock  into two  shares  and  simultaneously  reduce  each  share's  liquidation
preference from $50,000 to $25,000 plus any  accumulated  but unpaid  dividends.
The stock split occurred on July 24, 1995.

   Dividends on Series F7 are cumulative  at a rate which is reset  every 7 days
based on the results of an auction.  Dividends on Series F28 are also cumulative
at a rate  which is reset  every 28 days  based on the  results  of an  auction.
Dividend  rates  ranged from 2.40% to 5.00% during the six months ended June 30,
1998.

   The Trust may not declare dividends or make other  distributions on shares of
common  stock or purchase  any such  shares if, at the time of the  declaration,
distribution  or  purchase,  asset  coverage  with  respect  to the  outstanding
Preferred Stock would be less than 200%.

   The Preferred  Stock is redeemable at the option of the Trust, in whole or in
part, on any dividend  payment date at $25,000 per share plus any accumulated or
unpaid dividends whether or not declared. The Preferred Stock is also subject to
mandatory  redemption  at  $25,000  per  share  plus any  accumulated  or unpaid
dividends,  whether or not  declared  if certain  requirements  relating  to the
composition  of the  assets  and  liabilities  of the  Trust as set forth in the
Articles of Incorporation are not satisfied.

   The holders of  Preferred  Stock have voting  rights  equal to the holders of
common stock (one vote per share) and will vote  together with holders of shares
of common stock as a single class. However,  holders of Preferred Stock are also
entitled to elect two of the Trust's  directors.  In  addition,  the  Investment
Company Act of 1940 requires that along with approval by stockholders that might
otherwise  be  required,  the  approval  of the  holders  of a  majority  of any
outstanding  preferred shares, voting separately as a class would be required to
(a) adopt any plan of  reorganization  that would adversely affect the Preferred
Stock, and (b) take any action requiring a vote of security holders,  including,
among other  things,  changes in the Trust's  subclassification  as a closed-end
investment company or changes in its fundamental investment  restrictions.  

NOTE 5. DIVIDENDS

Subsequent  to June 30, 1998,  the Board of  Directors  of the Trust  declared a
dividend from  undistributed  earnings of $0.07125 per common share payable July
31, 1998 to shareholders of record on July 15, 1998.

   For the period July 1, 1998 to July 31, 1998, dividends declared on Preferred
Stock totalled  $230,225 in aggregate for the two  outstanding  Preferred  Stock
series.

                                       11

<PAGE>


- --------------------------------------------------------------------------------
          THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
                            DIVIDEND REINVESTMENT PLAN
- --------------------------------------------------------------------------------

      Pursuant  to  the  Trust's  Dividend   Reinvestment   Plan  (the  "Plan"),
shareholders may elect to have all  distributions of dividends and capital gains
automatically reinvested by State Street Bank & Trust Company (the "Plan Agent")
in Trust shares.  Shareholders  who do not  participate in the Plan will receive
all distributions in cash paid by check in United States dollars mailed directly
to the  shareholders  of record  (or if the  shares  are held in street or other
nominee  name,  then to the nominee) by the  custodian,  as dividend  disbursing
agent.

      The Plan Agent serves as agent for the shareholders in  administering  the
Plan.  After the Trust  declares a dividend or determines to make a capital gain
distribution,  the Plan Agent will, as agent for the  participants,  receive the
cash  payment and use it to buy Trust  shares in the open market on the New York
Stock Exchange for the participants'  accounts.  The Trust will not issue shares
under the Plan.

      Participants in the Plan may withdraw from the Plan upon written notice to
the Plan Agent and will receive  certificates  for whole Trust shares and a cash
payment for any fraction of a Trust share.

      The Plan Agent's fees for the  handling of the  reinvestment  of dividends
and distributions will be paid by the Trust.  However, each participant will pay
a pro rata share of  brokerage  commissions  incurred  with  respect to the Plan
Agent's open market  purchases in connection with the  reinvestment of dividends
and  distributions.  The automatic  reinvestment of dividends and  distributions
will not relieve  participants  of any federal income tax that may be payable on
such dividends or distributions.

      Experience  under  the Plan  may  indicate  that  changes  are  desirable.
Accordingly,  the Trust  reserves  the right to amend or  terminate  the Plan as
applied to any dividend or distribution paid subsequent to written notice of the
change sent to all  shareholders of the Trust at least 90 days before the record
date  for the  dividend  or  distribution.  The  Plan  also  may be  amended  or
terminated  by the Plan  Agent  upon at least 90  days'  written  notice  to all
shareholders  of the Trust.  All  correspondence  concerning  the Plan should be
directed  to the Plan Agent at (800)  699-1BFM.  The  address is on the front of
this report.

- --------------------------------------------------------------------------------
                              ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

      There have been no material changes in the Trust's  investment  objectives
or policies that have not been approved by the  shareholders.There  have been no
changes  in the  Trust's  charter or  by-laws.There  have been no changes in the
principal risk factors  associated with investment in the Trust. There have been
no changes in the  persons  who are  primarily  responsible  for the  day-to-day
management of the Trust's portfolio.

      The Annual Meeting of Trust  Shareholders  was held May 6, 1998 to vote on
the following matters:

      (1) To elect two Directors to serve as follows:

<TABLE>
<CAPTION>

                                                                               CLASS         TERM        EXPIRING
                                                                               -----         -----        -------
<S>                                                                             <C>        <C>              <C>
         Walter F. Mondale .............................................        II         3 years          2001
         Ralph L.Schlosstein ...........................................        II         3 years          2001

         Directors  whose term of office  continues  beyond this meeting are Andrew  F.Brimmer,  Richard E. Cavanagh,  Kent
         Dixon, Frank J. Fabozzi,Laurence D. Fink,James Grosfeld and James Clayburn La Force, Jr.

      (2) To ratify the selection of Deloitte & Touche LLP as independent public
          accountants of the Trust for the fiscal year ending December 31, 1998.

         Shareholders  elected the two  Directors  and ratified the selection of
   Deloitte & Touche LLP. The results of the voting was as follows:

                                                                             VOTES FOR   VOTES AGAINST  ABSTENTIONS
                                                                             --------    -----------    ----------
         Walter F.Mondale ..............................................    8,301,213             0      124,949
         Ralph L.Schlosstein ...........................................    8,317,395             0      108,767
         Ratification of Deloitte & Touche LLP .........................    8,321,885        28,109       76,168

</TABLE>


                                       12

<PAGE>

- --------------------------------------------------------------------------------
          THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
                               INVESTMENT SUMMARY
- --------------------------------------------------------------------------------

THE TRUST'S INVESTMENT OBJECTIVE

The BlackRock New York Insured Municipal 2008 TermTrust's  investment  objective
is to provide  current  income exempt from regular  federal income tax, New York
State and New  YorkCity  income tax, and to  return $15  per share (the  initial
public offering price per share) to investors on or about December 31, 2008.

WHO MANAGES THE TRUST?

BlackRock  Financial  Management,   Inc.   ("BlackRock")  is  an  SEC-registered
investment  adviser.  BlackRock and its  affiliates  currently  manage over $119
billion  on behalf of  taxable  and  tax-exempt  clients  worldwide.  Strategies
include  fixed  income,  equity and cash and may  incorporate  both domestic and
international   securities.   Domestic  fixed  income  strategies   utilize  the
government,  mortgage,  corporate and municipal bond sectors.  BlackRock manages
twenty-one  closed-end  funds that are traded on either the New York or American
stock  exchanges,  and a $23 billion  family of open-end  equity and bond funds.
Current  institutional  clients  number 334,  domiciled in the United States and
overseas.

WHAT CAN THE TRUST INVEST IN?

The Trust  intends to invest at least 80% of total  assets in a portfolio of New
York municipal  obligations  insured a timely payment of principal and interest.
The Trust may invest up to 20% in uninsured New York municipal  obligations were
rateds Aaa by Moody's or AAA by S&P or are  determined  by the  Adviser to be of
comparable credit quality (guaranteed, escrowed or backed in trust).

WHAT IS THE ADVISER'S INVESTMENT STRATEGY?

The Adviser will manage the assets of the Trust in  accordance  with the Trust's
investment  objective and policies to seek to achieve its objective by investing
in municipal  debt  securities  that are  diversified  both  geographically  and
according to revenue source. As such, the Adviser actively manages the assets in
relation  to market  conditions  and  interest  rate  changes.  In  seeking  the
investment  objective,  the Trust does not expect to invest more than 25% of its
total assets in municipals that are issued by the same state. Depending on yield
and  portfolio  allocation  considerations,  the  Adviser may choose to invest a
portion of the Trust's  assets in securities  which pay interest that is subject
to AMT  (alternative  minimum  tax).  In  addition  to seeking the return of the
initial  offering price, the Adviser also seeks to provide current income exempt
from federal income tax New York State and New YorkCity income tax to investors.
The portfolio  managers  will attempt to achieve this  objective by investing in
securities that provide competitive  income. In addition,  leverage will be used
(in an  amount up to 35% of the  total  assets)  to  enhance  the  income of the
portfolio.  In order to  maintain  competitive  yields as the  Trust  approaches
maturity  and  depending  on market  conditions,  the  Adviser  will  attempt to
purchase  securities  with call protection or maturities as close to the Trust's
maturity date as possible.  Securities with call  protection  should provide the
portfolio with some degree of protection against  reinvestment risk during times
of lower prevailing  interest rates. Since the Trust's primary goal is to return
the initial  offering price at maturity,  any cash that the Trust receives prior
to its maturity  date will be reinvested in  securities  with  maturities  which
coincide with the remaining  term of the Trust.  Since  shorter-term  securities
typically yield less than longer-term  security this strategy will likely result
in a decline in the Trust's  income over time.  It is important to note that the
Trust will be  managed  so as to  preserve  the  integrity  of the return of the
initial  offering  price.  If  market  conditions,  such as high  interest  rate
volatility,  force a choice between current income and risking the return of the
initial  offering  price,  it is likely that the return of the initial  offering
price will be emphasized.

HOW ARE THE TRUST'S SHARES PURCHASED AND SOLD? DOES THE TRUST PAY DIVIDENDS 
REGULARLY?

The  Trust's  shares are traded on the New York Stock  Exchange  which  provides
investors with  liquidity on a daily basis.  Orders to buy or sell shares of the
Trust must be placed through a registered broker or financial advisor. The Trust
pays monthly  dividends which are typically paid on the last business day of the
month. For shares held in the shareholder's name, dividends may be reinvested in
additional shares of the Trust through the Trust's transfer agent,  State Street
Bank and Trust Company. Investors who wish to hold shares in a brokerage account
should check with their financial  advisor to determine  whether their brokerage
firm offers dividend reinvestment services.

                                       13

<PAGE>


LEVERAGE CONSIDERATIONS IN A TERM TRUST

Under current  market  conditions,  leverage  increases the income earned by the
Trust.  The Trust employs leverage  primarily  through the issuance of preferred
stock.  Leverage  permits  the Trust to  borrow  money at  short-term  rates and
reinvest that money in longer-term  assets which typically offer higher interest
rates.  The  difference  between the cost of the  borrowed  funds and the income
earned on the proceeds that are invested in longer term assets is the benefit to
the Trust from  leverage.  In general,  the portfolio is typically  leveraged at
approximately  35% of total  assets.  Leverage  also  increases the duration (or
price  volatility  of the net  assets)  of the  Trust,  which  can  improve  the
performance  of the Trust in a  declining  rate  environment,  but can cause net
assets to decline faster than the market in a rapidly  rising rate  environment.
BlackRock's  portfolio  managers  continuously  monitor and regularly review the
Trust's  use of  leverage  and the Trust may  reduce,  or unwind,  the amount of
leverage  employed  should  BlackRock  consider that reduction to be in the best
interests of the shareholders.

SPECIAL CONSIDERATIONS AND RISK FACTORS RELEVANT TO TERM TRUSTS

THE TRUST IS  INTENDED  TO BE A  LONG-TERM  INVESTMENT  AND IS NOT A  SHORT-TERM
TRADING VEHICLE.

RETURN OF INITIAL  INVESTMENT.  Although the objective of the Trust is to return
its initial offering price upon termination, there can be no assurance that this
objective will be achieved.

DIVIDEND  CONSIDERATIONS.  The income and dividends paid by the Trust are likely
to  decline  to some  extent  over the term of the Trust due to the  anticipated
shortening of the dollar-weighted average maturity of the Trust's assets.

LEVERAGE.  The Trust utilizes  leverage  through the issuance of preferred stock
which involves  special risks.  The Trust's net asset value and market value may
be more volatile due to its use of leverage.

MARKET PRICE OF SHARES.  The shares of closed-end  investment  companies such as
the Trust trade on the New York Stock  Exchange  (NYSE symbol:  BLN) and as such
are subject to supply and demand influences.  As a result, shares may trade at a
discount or a premium to their net asset value.

ILLIQUID  SECURITIES.  The Trust may  invest in  securities  that are  illiquid,
although  under current  market  conditions the Trust expects to do so to only a
limited extent. These securities involve special risks.

ANTITAKEOVER  PROVISIONS.  Certain antitakeover provisions will make a change in
the Trust's  business or management  more difficult  without the approval of the
Trust's Board of Directors and may have the effect of depriving  shareholders of
an  opportunity  to sell their shares at a premium above the  prevailing  market
price.

MUNICIPAL OBLIGATIONS.  Municipal obligations include debt obligations issued by
states,  cities, and local authorities,  and possessions and certain territories
of the United States to obtain funds for various public purposes,  including the
construction of public  facilities,  the refinancing of outstanding  obligations
and the obtaining of funds for general operating expenses and for loans to other
public  institutions  and  facilities.  The value of municipal  debt  securities
generally  varies  inversely with changes in prevailing  market  interest rates.
Depending  on the amount of call  protection  that the  securities  in the Trust
have, the Trust may be subject to certain  reinvestment risks in environments of
declining interest rates.

ALTERNATIVE  MINIMUM TAX (AMT).  The Trust may invest in  securities  subject to
AMT. The Trust currently holds no securities that are subject to AMT.

                                       14


<PAGE>

- --------------------------------------------------------------------------------
          THE BLACKROCK NEW YORK INSURED MUNICIPAL 2008 TERM TRUST INC.
                                    GLOSSARY
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>

<S>                                           <C>
CLOSED-END FUND:                              Investment  vehicle  which  initially  offers a fixed  number of  shares  and
                                              trades on a stock exchange.  The fund invests in a portfolio of securities in
                                              accordance with its stated investment objectives and policies.

DISCOUNT:                                     When a fund's  net asset  value is greater  than its stock  price the fund is
                                              said to be trading at a discount.

DIVIDEND:                                     Income   generated  by  securities  in  a  portfolio   and   distributed   to
                                              shareholders  after the deduction of expenses.  This Trust  declares and pays
                                              dividends to common shareholders on a monthly basis.

DIVIDEND REINVESTMENT:                        Shareholders  may have all  dividends  and  distributions  of  capital  gains
                                              automatically reinvested into additional shares of a fund.

MARKET PRICE:                                 Price  per  share  of a  security  trading  in the  secondary  market.  For a
                                              closed-end  fund,  this is the price at which one share of the fund trades on
                                              the  stock  exchange.  If you were to buy or sell  shares,  you  would pay or
                                              receive the market price.

NET ASSET VALUE (NAV):                        Net asset value is the total market value of all  securities and other assets
                                              held  by the  Trust,  plus  income  accrued  on its  investments,  minus  any
                                              liabilities  including  accrued  expenses,  divided  by the  total  number of
                                              outstanding  shares.  It is the underlying value of a single share on a given
                                              day.  Net asset value for the Trust is  calculated  weekly and  published  in
                                              BARRON'S on Saturday  and THE NEW YORK TIMES or THE WALL STREET  JOURNAL each
                                              Monday.

PREMIUM:                                      When a fund's stock price is greater  than its net asset  value,  the fund is
                                              said to be trading at a premium.

PRE-REFUNDED BONDS:                           These securities are collateralized by U.S.  Government  securities which are
                                              held in escrow and are used to pay  principal  and interest on the tax exempt
                                              issue  and  retire  the bond in full at the date  indicated,  typically  at a
                                              premium to par.
</TABLE>

                                       15

<PAGE>


                                    BlackRock

DIRECTORS
Laurence D. Fink, CHAIRMAN
Andrew F. Brimmer
Richard E. Cavanagh
Kent Dixon
Frank J. Fabozzi
James Grosfeld
James Clayburn La Force, Jr.
Walter F. Mondale
Ralph L. Schlosstein

OFFICERS
Ralph L. Schlosstein, PRESIDENT
Keith T. Anderson, VICE PRESIDENT
Michael C. Huebsch, VICE PRESIDENT
Robert S. Kapito, VICE PRESIDENT
Kevin Klingert, VICE PRESIDENT/TAX
Richard M. Shea, VICE PRESIDENT/TAX
Henry Gabbay, TREASURER
James Kong, ASSISTANT TREASURER
Karen H. Sabath, SECRETARY

INVESTMENT ADVISER
BlackRock Financial Management, Inc.
345 Park Avenue
New York, NY 10154
(800) 227-7BFM

ADMINISTRATOR
Princeton Administrators, L.P.
P.O. Box 9095
Princeton, NJ08543-9095
(800) 543-6217

CUSTODIAN AND TRANSFER AGENT
State Street Bank and Trust Company
One Heritage Drive
North  Quincy,  MA 02171
(800)  699-1BFM

AUCTION  AGENT
Bankers Trust Company
4 Albany Street
New York, NY 10006

INDEPENDENT  AUDITORS
Deloitte & Touche LLP
Two World Financial Center
New York, NY 10281-1434

LEGAL COUNSEL
Skadden, Arps, Slate, Meagher & Flom LLP
919 Third Avenue
New York, NY 10022

   The accompanying  financial  statements as of June 30, 1998, were not audited
and, accordingly, no opinion is expressed on them.

   This report is for shareholder information. This is not a prospectus intended
for use in the purchase or sale of any securities.

                                         THE BLACKROCK NEW YORK INSURED
                                         MUNICIPAL 2008 TERM TRUST INC.
                                       c/o Princeton Administrators, L.P.
                                                 P.O. Box 9095
                                            Princeton, NJ 08543-9095
                                                 (800) 227-7BFM

                                                                   092476-10-5
                                                                   092476-20-4
                                                                   092476-30-3
                                                                   092476-40-2

[RECYCLE LOGO] Printed on recycled paper

THE BLACKROCK
NEW YORK INSURED
MUNICIPAL 2008
TERM TRUST INC.

================================
SEMI-ANNUAL REPORT
JUNE 30, 1998



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