<PAGE> PAGE 1
000 B000000 03/31/97
000 C000000 0000920995
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 DEAN WITTER HIGH INCOME SECURITIES
001 B000000 811-7157
001 C000000 2123922550
002 A000000 TWO WORLD TRADE CENTER
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10048
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 DEAN WITTER INTERCAPITAL INC.
008 B000001 A
008 C000001 801-42061
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10048
011 A000001 DEAN WITTER DISTRIBUTORS INC.
011 B000001 8-45262
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10048
012 A000001 DEAN WITTER TRUST COMPANY
012 B000001 84-1785
012 C010001 JERSEY CITY
012 C020001 NJ
012 C030001 07302
013 A000001 PRICE WATERHOUSE LLP
013 B010001 NEW YORK
013 B020001 NY
<PAGE> PAGE 2
013 B030001 10036
014 A000001 DEAN WITTER REYNOLDS INC.
014 B000001 8-14172
015 A000001 THE BANK OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 126
019 C000000 DEANWITTER
020 A000001 *SMITH BARNEY
020 B000001 13-1912900
020 C000001 36
020 A000002 *MCMAHAN SECURITIES
020 B000002 06-1229141
020 C000002 6
020 A000003 *NATWEST SECURITIES
020 B000003 13-3312778
020 C000003 3
020 A000004 *BT SECURITIES
020 B000004 13-3311934
020 C000004 1
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 46
022 A000001 BANK OF NEW YORK (THE)
022 B000001 13-5160382
022 C000001 3229009
022 D000001 0
022 A000002 MERRILL LYNCH PIERCE FENNER & SMITH INC.
022 B000002 13-5674085
022 C000002 497067
022 D000002 17938
022 A000003 GOLDMAN SACHS & CO.
022 B000003 13-5108880
022 C000003 378474
022 D000003 5988
022 A000004 CS FIRST BOSTON CORPORATION
022 B000004 13-5659485
022 C000004 260096
022 D000004 11200
022 A000005 CHASE (JAMES D.) SECURITIES INC.
022 B000005 94-2530763
022 C000005 255158
<PAGE> PAGE 3
022 D000005 6929
022 A000006 BANCAMERICA SECURITIES INC.
022 B000006 95-4035346
022 C000006 246299
022 D000006 0
022 A000007 NATIONSBANC CAPITAL MARKETS INC.
022 B000007 56-1684171
022 C000007 239128
022 D000007 0
022 A000008 LANSTON (AUBREY G.) & CO. INC.
022 B000008 13-5552129
022 C000008 140288
022 D000008 0
022 A000009 FORD MOTOR CREDIT COMPANY
022 B000009 38-1612444
022 C000009 139882
022 D000009 0
022 A000010 FIRST CHICAGO CAPITAL MARKETS INC.
022 B000010 36-3595942
022 C000010 139388
022 D000010 0
023 C000000 6754965
023 D000000 263856
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A010000 82722
028 A020000 2385
028 A030000 0
028 A040000 23043
028 B010000 81262
028 B020000 2551
028 B030000 0
028 B040000 19897
028 C010000 72964
<PAGE> PAGE 4
028 C020000 5866
028 C030000 0
028 C040000 18324
028 D010000 100840
028 D020000 2973
028 D030000 0
028 D040000 37708
028 E010000 109752
028 E020000 3257
028 E030000 0
028 E040000 34761
028 F010000 106937
028 F020000 3434
028 F030000 0
028 F040000 47665
028 G010000 554477
028 G020000 20466
028 G030000 0
028 G040000 181398
028 H000000 554477
029 000000 N
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
034 000000 Y
035 000000 1408
036 A000000 N
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
042 B000000 0
042 C000000 100
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 6228
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
<PAGE> PAGE 5
048 A010000 500000
048 A020000 0.500
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 500000
048 K020000 0.425
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 1000
<PAGE> PAGE 6
062 A000000 Y
062 B000000 0.0
062 C000000 0.7
062 D000000 1.6
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 93.2
062 Q000000 0.0
062 R000000 2.9
063 A000000 0
063 B000000 5.9
064 A000000 N
064 B000000 Y
065 000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 N
070 K020000 N
070 L010000 Y
<PAGE> PAGE 7
070 L020000 Y
070 M010000 Y
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 882696
071 B000000 301848
071 C000000 721150
071 D000000 42
072 A000000 12
072 B000000 92540
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 3685
072 G000000 0
072 H000000 0
072 I000000 406
072 J000000 45
072 K000000 0
072 L000000 55
072 M000000 15
072 N000000 286
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 38
072 S000000 18
072 T000000 6228
072 U000000 32
072 V000000 0
072 W000000 14
072 X000000 10823
072 Y000000 0
072 Z000000 81717
072AA000000 0
072BB000000 10136
072CC010000 1729
072CC020000 0
072DD010000 82973
072DD020000 0
072EE000000 6936
073 A010000 1.0280
<PAGE> PAGE 8
073 A020000 0.0000
073 B000000 0.1060
073 C000000 0.0000
074 A000000 0
074 B000000 18084
074 C000000 7999
074 D000000 1051955
074 E000000 1840
074 F000000 29703
074 G000000 0
074 H000000 0
074 I000000 779
074 J000000 20136
074 K000000 0
074 L000000 28783
074 M000000 97
074 N000000 1159376
074 O000000 25504
074 P000000 1250
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 3541
074 S000000 0
074 T000000 1129081
074 U010000 115231
074 U020000 0
074 V010000 9.80
074 V020000 0.00
074 W000000 0.0000
074 X000000 44546
074 Y000000 14113
075 A000000 0
075 B000000 778549
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
<PAGE> PAGE 9
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 ICI MUTUAL INSURANCE COMPANY
080 B000000 GULF, CHUBB, VIGILANT, RELIANCE
080 C000000 110000
081 A000000 Y
081 B000000 125
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE BARRY FINK
TITLE VICE PRESIDENT
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000920995
<NAME> DEAN WITTER HIGH INCOME SECURITIES-ANNUAL-03/31/97
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 1115609250
<INVESTMENTS-AT-VALUE> 1110360011
<RECEIVABLES> 48918994
<ASSETS-OTHER> 96916
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1159375921
<PAYABLE-FOR-SECURITIES> 25503561
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4791483
<TOTAL-LIABILITIES> 30295044
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1144188118
<SHARES-COMMON-STOCK> 115231451
<SHARES-COMMON-PRIOR> 50912864
<ACCUMULATED-NII-CURRENT> 1795238
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (11653240)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (5249239)
<NET-ASSETS> 1129080877
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 92540476
<OTHER-INCOME> 0
<EXPENSES-NET> 10823426
<NET-INVESTMENT-INCOME> 81717050
<REALIZED-GAINS-CURRENT> (10135805)
<APPREC-INCREASE-CURRENT> 1728943
<NET-CHANGE-FROM-OPS> 73310188
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 82972651
<DISTRIBUTIONS-OF-GAINS> 6935617
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 92034373
<NUMBER-OF-SHARES-REDEEMED> 31220883
<SHARES-REINVESTED> 3505097
<NET-CHANGE-IN-ASSETS> 623590301
<ACCUMULATED-NII-PRIOR> 3050651
<ACCUMULATED-GAINS-PRIOR> 5418182
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3685133
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 10823426
<AVERAGE-NET-ASSETS> 778548947
<PER-SHARE-NAV-BEGIN> 9.93
<PER-SHARE-NII> .99
<PER-SHARE-GAIN-APPREC> .02
<PER-SHARE-DIVIDEND> (1.03)
<PER-SHARE-DISTRIBUTIONS> (.11)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 9.80
<EXPENSE-RATIO> 1.39
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
