TITAN CORP
POS AM, 1998-12-04
COMPUTER INTEGRATED SYSTEMS DESIGN
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<PAGE>

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 4, 1998
                                                     REGISTRATION NO. 333-66149
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

                         SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C. 20549
                                    ___________

                              POST-EFFECTIVE AMENDMENT
                                         TO
                                      FORM S-3
                               REGISTRATION STATEMENT
                                       UNDER
                             THE SECURITIES ACT OF 1933
                                    ___________

                               THE TITAN CORPORATION
               (Exact name of registrant as specified in its charter)
<TABLE>
<S>                               <C>                            <C>
           DELAWARE                           8711                   95-2588754
(State or other jurisdiction of   (Primary Standard Industrial     (I.R.S. Employer
incorporation or organization)     Classification Code Number)   Identification Number)
</TABLE>

                               THE TITAN CORPORATION
                               3033 SCIENCE PARK ROAD
                          SAN DIEGO, CALIFORNIA 92121-1199
                             TELEPHONE: (619) 552-9500
           (Address, including ZIP code, and telephone number, including
              area code, of registrant's principal executive offices)
                                    ___________

                                  IRA FRAZER, ESQ.
                SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                               THE TITAN CORPORATION
                               3033 SCIENCE PARK ROAD
                          SAN DIEGO, CALIFORNIA 92121-1199
                             TELEPHONE: (619) 552-9500
        (Name, address, including ZIP code, and telephone number, including
                          area code, of agent for service)
                                  ________________

                                     COPIES TO:

                              BARBARA L. BORDEN, ESQ.
                                 COOLEY GODWARD LLP
                          4365 EXECUTIVE DRIVE, SUITE 1100
                                SAN DIEGO, CA 92121
                                   (619) 550-6000
                                  ________________

           APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
 As soon as practicable after the effective date of this Registration Statement.

  If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

  If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

  If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]

  If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
                                  ________________
<PAGE>
                           CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                              PROPOSED MAXIMUM
                                                                     PROPOSED MAXIMUM            AGGREGATE
             TITLE OF EACH CLASS OF                AMOUNT TO          OFFERING PRICE             OFFERING           AMOUNT OF
          SECURITIES TO BE REGISTERED           BE REGISTERED(1)        PER SHARE(2)              PRICE(2)      REGISTRATION FEE(3)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                              <C>                   <C>                     <C>                  <C>
Common Stock .01 par value . . . . . . . .            4,505                $5.34                $24,056.70            $6.69
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
(1)  4,167,833 shares were previously registered with the initial filing of 
the Registration Statement.

(2)  Estimated in accordance with Rule 457(c) solely for the purpose of
computing the amount of the registration fee based on the average of the high
and low prices of the Registrant's Common Stock as reported on the New York
Stock Exchange on November 30, 1998.

(3)  $5,909.15 was previously paid upon the initial filing of the Registration
Statement.

THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT THAT SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT.  A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.  THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE.  THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.


                                  4,172,338 SHARES


                                THE TITAN CORPORATION


                                     COMMON STOCK
                                   ________________

     The stockholders of The Titan Corporation listed below are offering and
selling 4,172,338 shares of Titan Common Stock under this prospectus.

     All of the selling stockholders acquired their shares of Titan Common Stock
on August 24, 1998, by virtue of a merger of Merger Acquisition Sub, a wholly
owned subsidiary of Titan, with and into VisiCom Laboratories, Inc.

     The selling stockholders may offer their Titan stock through public or
private transactions, on or off the New York Stock Exchange, at prevailing
market prices or at privately negotiated prices.

     Titan stock is listed on the New York Stock Exchange and trades on the
exchange with the ticker symbol "TTN."  On October 21, 1998, the closing price
of one share of Titan Common Stock on the New York Stock Exchange was $5.125.

                                  ________________

              THE TITAN SHARES OFFERED OR SOLD UNDER THIS PROSPECTUS
                           INVOLVE A HIGH DEGREE OF RISK.
                      SEE "RISK FACTORS" BEGINNING ON PAGE 4.
                                  ________________

THE TITAN SHARES OFFERED OR SOLD UNDER THIS PROSPECTUS HAVE NOT BEEN APPROVED BY
THE SEC OR ANY STATE SECURITIES COMMISSION, NOR HAVE THESE ORGANIZATIONS
DETERMINED THAT THIS PROSPECTUS IS ACCURATE OR COMPLETE.  ANY REPRESENTATION TO
THE CONTRARY IS A CRIMINAL OFFENSE.



                  THE DATE OF THIS PROSPECTUS IS DECEMBER 4, 1998

<PAGE>

THIS PROSPECTUS IS PART OF A REGISTRATION STATEMENT WE FILED WITH THE SEC.  THE
REGISTRATION STATEMENT INCLUDES EXHIBITS AND ADDITIONAL INFORMATION NOT INCLUDED
IN THE PROSPECTUS.

WE HAVE NOT AUTHORIZED ANY PERSON TO GIVE YOU ANY SUPPLEMENTAL INFORMATION OR
MAKE ANY REPRESENTATIONS FOR US.  YOU SHOULD NOT RELY UPON ANY INFORMATION ABOUT
TITAN THAT IS NOT CONTAINED IN THIS PROSPECTUS OR IN ONE OF TITAN'S PUBLIC
REPORTS FILED WITH THE SEC AND INCORPORATED INTO THIS PROSPECTUS.  INFORMATION
CONTAINED IN THIS PROSPECTUS OR IN TITAN'S PUBLIC REPORTS MAY BECOME STALE.  YOU
SHOULD NOT ASSUME THAT THE INFORMATION IN THIS PROSPECTUS IS ACCURATE OR
COMPLETE AS OF ANY DATE OTHER THAN THE DATE ON THE FRONT OF THIS PROSPECTUS.  WE
ARE NOT MAKING AN OFFER OF SECURITIES IN ANY STATE WHERE THE OFFER IS NOT
PERMITTED.


                                    THE COMPANY


GENERAL INFORMATION

     The Titan Corporation is a state-of-the-art information technology products
and services company serving commercial and government customers.  We have
organized our business into four core groups and a fifth emerging technologies
group.  Our Communications group (through Linkabit Wireless) offers advanced
satellite ground terminals, satellite voice/data modems, networking systems and
other products used to provide bandwidth-efficient communications.  Our Software
Systems subsidiary is a systems integrator that provides a broad range of
information technology services and solutions for commercial and non-defense
government customers

     In our Information Technology group, we use our expertise in large data 
management, communications and knowledge-based systems to provide services 
and solutions to the defense and intelligence communities.  Since January 1, 
1998, we have purchased five defense information technology companies and we 
continue to look for new acquisition opportunities.  We believe that these 
acquisitions will enhance our ability to compete with other companies in a 
consolidating part of the defense market.

     We endeavor to commercialize technologies developed in our defense
business.  One example is our Medical Sterilization and Food Pasteurization
business.  This business sells turnkey sterilization systems and provides
sterilization services on an outsourcing basis for medical device manufacturers.

     Our executive offices are located at 3033 Science Park Road, San Diego,
California 92121, and our telephone number is (619) 552-9500.  We were
incorporated in 1969.


                                          2.
<PAGE>


RECENT ACQUISITIONS

  Since January 1, 1998, Titan or one of its wholly owned subsidiaries has
acquired the stock of the following information technology companies on the
terms described in the following chart:


<TABLE>
<CAPTION>
                                                                                                DATE
COMPANY         GENERAL NATURE OF                                                  ACCOUNTING   ACQUISITION
ACQUIRED        BUSINESS                    PURCHASE PRICE                         TREATMENT    COMPLETED
- -----------------------------------------------------------------------------------------------------------
<S>             <C>                         <C>                                    <C>          <C>
DBA Systems     defense imaging systems     6,110,765 shares of Titan common         Pooling      2/27/98
                and electro-optical         stock; plus options for 395,698
                systems                     shares of Titan common stock
- -----------------------------------------------------------------------------------------------------------
Validity        defense consultant          $12 million cash, $3 million in notes    Purchase     3/31/98
Corporation                                 at prime rate and assumption of
                                            transaction expenses
- -----------------------------------------------------------------------------------------------------------
Horizons        software development,       3,173,214 shares of Titan common         Pooling      6/30/98
Technology      systems integration and     stock; plus options for 10,285
                consulting                  shares of Titan common stock
- -----------------------------------------------------------------------------------------------------------
VisiCom         communication services,     4,167,833 shares of Titan common         Pooling      8/24/98
Laboratories    image enhancement           stock; plus options for 593,171
                software, ground-based      shares of Titan common stock
                commercial satellite
                equipment
- -----------------------------------------------------------------------------------------------------------
Delfin          software, computer          approximately 3,686,667 shares of        Pooling      10/23/98
Systems         systems and network         Titan common stock; plus options 
                integration, consulting     for approximately 835,894 shares 
                and signals intelligence    of Titan common stock
                electronics hardware
- -----------------------------------------------------------------------------------------------------------
</TABLE>


                                          3.
<PAGE>

                                     RISK FACTORS

   INVESTMENT IN TITAN SHARES INVOLVES A HIGH DEGREE OF RISK. YOU SHOULD
CONSIDER THE FOLLOWING DISCUSSION OF RISKS AS WELL AS OTHER INFORMATION IN THIS
PROSPECTUS BEFORE PURCHASING ANY TITAN SHARES.

   EXCEPT FOR HISTORICAL INFORMATION, THE INFORMATION CONTAINED IN THIS
PROSPECTUS AND IN OUR SEC REPORTS ARE "FORWARD LOOKING" STATEMENTS ABOUT ARE
EXPECTED FUTURE BUSINESS AND PERFORMANCE.  OUR ACTUAL OPERATING RESULTS AND
FINANCIAL PERFORMANCE MAY PROVE TO BE VERY DIFFERENT FROM WHAT WE MIGHT HAVE
PREDICTED AS OF THE DATE OF THIS PROSPECTUS.  THE RISKS DESCRIBED BELOW ADDRESS
SOME OF THE FACTORS THAT MAY AFFECT OUR FUTURE OPERATING RESULTS AND FINANCIAL
PERFORMANCE.

   ABILITY TO IMPLEMENT SPIN-OUT STRATEGY.  Our defense business generates
technologies that we believe we can exploit through commercial businesses.
Since the startup and expansion costs for commercial businesses are high, we
adopted a strategy for funding our commercial businesses through capital
markets.  We have reorganized our businesses into focused subsidiaries and we
intend, when market and other conditions permit, to fund these operations by
selling minority equity interests to public investors.  We refer to these
transactions as "spin-outs" of our subsidiaries.  Although other companies have
successfully used this strategy, we have not yet proven that we can spin-off
minority interests in our subsidiaries and we may fail to for a variety of
reasons.  We stopped the IPO process for our first candidate, Linkabit Wireless,
primarily because of adverse changes in its Asian product markets.  Other
reasons may include market conditions for IPOs generally and technology
companies in particular or our inability to develop commercial businesses that
are attractive to public investors.  Even if we complete one or more spin-offs
and raise capital to expand our commercial businesses, this strategy may not
improve our financial performance or result in higher Titan stock prices.

   RISKS ASSOCIATED WITH ACQUISITION STRATEGY.  Since January 1, 1998, we have
acquired five defense information technology companies as part of our
consolidation strategy for our defense business.  All but one of these
transactions was structured as a stock for stock pooling of interest
transaction.  The acquisition and integration of new companies involves risk.
While we believe that each of our recent acquisitions will improve our earnings
per share and enable us to compete more effectively for defense contracts, the
integration of these businesses may cost us in the short run.  We may need to
divert more management resources to integration than we planned.  This diversion
may adversely affect our ability to pursue other more profitable activities.  In
addition, we may not eliminate as many redundant costs as we anticipated in
selecting our acquisition candidates.  One or more of our acquisition candidates
also may have liabilities or adverse operating issues that we failed to discover
through our diligence prior to the acquisition.  Consequently, our recent
acquisitions may not improve our financial performance in the short or long term
as we expect them to do.

   We intend to continue to look for complementary businesses or technologies to
acquire so that we can expand our core businesses.  However, we may not find any
more attractive candidates or may find that the acquisition terms are not as
favorable as our prior acquisitions.  Continuing instability in the U.S.
securities markets and volatility in our stock price may make acquisitions with
stock more expensive.  We also may not adequately access the risks inherent in a
particular acquisition candidate or correctly access the candidate's potential
contribution to our financial performance.  Accordingly, our acquisition
strategy may not result in higher earnings per share and could weaken our
overall financial performance.

   DEPENDENCE ON GOVERNMENT CONTRACTS.  We earn a substantial portion of our
revenues from government contracts.  During our fiscal years 1997, 1996 and
1995, our revenues from U.S government business represented approximately 72%,
76% and 62% of our total revenues.  With our five new acquisitions, we expect
this percentage to rise in our current fiscal year.  Although we bid for and are
awarded long term government contracts and subcontracts, the government only
funds these contracts on an annual basis.  The government may cancel these
contracts at any time without penalty or may change its requirements or its
contract budget.  The U.S. Congress may decline to appropriate funds needed to
complete the contracts awarded to Titan or the prime contractor.  On our
subcontracts, we generally do not control the prime contractor's allocation of
resources.  We also depend upon the prime contractor to perform its obligations
on the primary government contract.  Any cancellations or modifications


                                          4.
<PAGE>

of our significant contracts or subcontracts could hurt our financial
performance in the short or long term.  Continuing declines in U.S. defense and
other federal agency budgets also may hurt our ongoing prospects.

   Our government contracts are subject to cost audits by the government.  These
audits may occur several years after completion of the audited work.  Audits may
result in a recalculation of contract revenues or result in the government
refusing to reimburse some of our contract costs and fees.  Generally, we
resolve audit issues by negotiation without material adjustments.  However, in
the future, we could have a material adjustment to revenue as a result of an
audit, including an audit of one of the companies we have recently acquired.
Some of the recently acquired companies did not impose as rigorous internal
controls as we imposed on the government contracts we performed.

   Finally, many of our contracts are fixed price contracts.  Under these
contracts, we bear the risk of any cost overruns and our profits are adversely
affected if our costs exceed the assumptions we used in bidding for the
contract.

   FLUCTUATIONS IN RESULTS OF OPERATIONS.  Our quarterly and annual financial 
performance has historically fluctuated and may continue to fluctuate 
significantly in the future. Our revenues are affected by factors such as the 
unpredictability of sales and contract awards due to the long procurement 
process for most of our products and services, defense and intelligence 
budgets, competition and general economic conditions.  Our product mix and 
unit volume, our ability to keep expenses within budgets, our distribution 
channels and our pricing affect our gross margins.  These factors and other 
risks discussed in this section may adversely affect our financial 
performance within a period. Consequently, we do not believe that comparison 
of our financial performance from period to period is necessarily meaningful 
or predicative of our likely future performance.

   ABILITY TO COMMERCIALIZE NEW TECHNOLOGIES.  In 1991, we adopted a strategy 
of seeking to develop commercial businesses using technology developed in our 
defense businesses.  Our commercial businesses, including our medical 
sterilization business, are in an early stage of development.  These 
technology-based businesses are subject to risks inherent in early stage 
startup companies. One of our challenges is ensuring that these businesses 
have adequate capital to fund their growth.  At the inception of this 
strategy, we used cash generated through our defense business to fund the 
associated substantial startup and expansion costs.  This practice cost us 
short term profitability in prior years.  We have since modified our 
financing strategy and are seeking funding from external sources through 
minority spin-offs described above or through sales of majority interests in 
earlier stage technologies that require substantial business development.  
However, external funding may not be available and we may be unable or choose 
not to fund these businesses through our operations.  Lack of adequate 
capital could cause one or more of these businesses to fail or cause us to 
sell a business.

   These businesses are also subject to a high degree of competition and a risk
of technical obsolescence if we fail to respond to rapid technological changes.
Each of these businesses face market and operating risks that are unique to the
particular business.  We have a limited history of commercializing new
technologies and ultimately may not succeed in creating new commercial
businesses that positively contribute to our profitability.

   MARKET ACCEPTANCE OF FOOD PASTEURIZATION.  Our Medical Sterilization and Food
Pasteurization group is attempting to develop food pasteurization as a new
market for its E-Beam sterilization process.  Because food pasteurization or
irradiation has yet to gain consumer acceptance, we do not know whether a viable
new market will develop or grow.  Unless meat producers and large-scale sellers
such as chain restaurants decide to pasteurize or purchase pasteurized meat,
this market is unlikely to develop.  If the market does develop, our technology
will compete against other technologies now used to sterilize medical
instruments and our business may not win a substantial share of this market.

   RISK OF INTERNATIONAL OPERATIONS.  Our subsidiary, Linkabit Wireless, sells
its communications products primarily in foreign countries with large rural
areas, particularly in Indonesia. Although Linkabit Wireless generally sells its
products in U.S. dollars, the recent currency devaluations and adverse market
conditions in Indonesia and other Asian countries has negatively affected demand
for Linkabit's products and our revenues for this segment.  Our communications
products generally require substantial capital investments, and our potential
customers have


                                          5.
<PAGE>

not had the capital resources to make these investments.  We have assisted 
our established marketing partner in Indonesia by extending some trade credit 
that has subsequently been extended with installments due over an additional 
two years.  Because of market conditions in Indonesia and other factors, 
there is a risk that our customer may not be able to pay this debt in 
accordance with the extended terms.  Further, we do not have the capital 
resources and risk tolerance to finance the purchase of our communications 
products.  As a result, revenues in this group may decline until economic 
conditions in the Pacific Rim region begin to improve.

   Selling products or services in international markets also entails other
market, economic, cultural, legal and political risks, conditions and expenses.
These risks include trade barriers, export and import restrictions and other
applicable laws, political and economic instability, difficulties in collecting
amounts owed to Titan and difficulties in managing overseas employees and
contractors.  Any one of these factors or other international business risks
could adversely affect our financial performance.

   COMPETITION.  Our defense and our commercial businesses are highly
competitive.  We believe we must continue to expand our defense information
technology business so that we can remain price competitive and compete for
larger contracts.  For that reason, we are continuing to look for other
acquisition candidates.  Our commercial businesses compete against other
technologies as well as against companies with similar products.  In order to
remain competitive, we must invest to keep our products technically advanced and
compete on price and on value added to our customers. Our ability to compete
may be adversely affected by limits on our capital resources and our ability to
invest in maintaining and growing our market share.  Any adverse financial
developments could make us a less effective competitor.  Many of our competitors
are larger, better financed and better known companies who may compete more
effectively than we are able to compete.

   RELIANCE ON STRATEGIC RELATIONSHIPS.  Since the primary markets for Linkabit
Wireless products are in more rural developing countries, we have formed
strategic arrangements with local partners to develop and expand this business.
Linkabit Wireless has a strategic arrangement with its customer PT. Pasifik
Satelit Nusantra for sales of products in Asian countries where PSN has
installed satellites. Similarly, Linkabit Wireless is part of a consortium led
by Alcetel Telespace, pursuant to which the companies pursue symbiotic successes
in new markets.  We cannot guarantee that we can maintain these strategic
alliances or develop new strategic alliances to expand our marketing networks
for Linkabit's products.  Without these alliances and improved economic
conditions in our target markets, our development of robust commercial markets
for our communication products may be delayed or fail.

   CUSTOMER CONCENTRATION WITHIN BUSINESS SEGMENTS.  Some of our businesses rely
upon a small number of customers for a large portion of their revenues.  For
example, the U.S. Navy purchases a large percentage of Linkabit Wireless's
Mini-DAMA product and the Federal Aviation Administration purchases a large
portion of our non-defense software services.  Because of customer
concentrations, we are vulnerable to adverse changes in our revenues and overall
financial performance if any one of our significant customers delays or cancels
any planned or expected purchases.

   GOVERNMENT REGULATIONS.  Like most businesses, our defense and commercial
businesses must comply with or affected by various government regulations.
These regulations affect how our customers and we can do business and, in some
instances, impose added costs to our businesses.  For example, the FDA regulates
how we sterilize medical devices and regulates our customer's packaging of these
devices.  Any changes in applicable laws could adversely affect the financial
performance of the business affected by the changed regulations.  Any failure to
comply with applicable laws could result in material fines and penalties or
affect how we do business in the future.

   DEPENDENCE UPON SUPPLIERS; SOLE AND LIMITED SOURCES OF SUPPLY.  Our internal
manufacturing capacity is limited so we use contract manufacturers.  While we
use care in selecting our manufacturers, this arrangement gives us less control
over the quality and price of products or components than if we manufactured
them ourselves.  In some cases, we obtain products from a sole supplier or a
limited group of suppliers.  Consequently, we risk disruptions in our supply of
key products and components if our suppliers fail or are unable to perform
because of strikes, natural disasters, financial condition or other factors.
Any material supply disruptions could adversely affect our revenues and our
ongoing product cost structure.


                                          6.
<PAGE>

   LIMITED INTELLECTUAL PROPERTY PROTECTION; DEPENDENCE ON PROPRIETARY
TECHNOLOGY.  As a policy, we seek to protect our proprietary technology and
inventions through patents, copyrights, trade secret law and other legal
protections.  While our patent portfolio is valuable, our financial success
ultimately depends upon our ability to deliver products and services that meet
customer needs, not on intellectual property laws.  We may, however, incur
significant expense in both protecting our intellectual property and in
defending or assessing claims with respect to intellectual property owned by
others.  Any patent or other infringement litigation by or against Titan could
have an adverse effect on our financial performance.  We also could be forced to
modify or abandon one or more planned or current products based upon our
assessment of intellectual property risks or actual or threatened claims by
other companies.

   RELIANCE ON KEY PERSONNEL.  We are a technology-driven company and we need to
maintain a workforce of highly qualified technical and management personnel,
including engineers, computer programmers and management personnel with security
clearances required for the Titan's classified work.  Our employees generally
have many other job opportunities.  Consequently, we strive to maintain an
entrepreneurial work environment and provide financial incentives to attract and
retain our key personnel.  The loss of any key personnel could negatively affect
our financial performance.

   VOLATILITY OF STOCK PRICE.  As of the date of this prospectus, we have a 
market capitalization of approximately $165 million.  Like other smaller 
capitalized, technology companies, our stock price has fluctuated 
significantly at times and is subject to a risk of ongoing volatility.  The 
price of Titan shares may be adversely affected by our financial performance 
or the performance of our competitors, the market for technology company 
stocks, the market for small cap company stocks, general economic trends or 
other factors that we cannot predict or control.

   IMPACT OF THE YEAR 2000 ISSUE.  We have implemented a Year 2000 compliance
program to address our current hardware and software products and development
tools and all of our major computing information systems networks, desktop
systems and infrastructure.  In addition, we are contacting business associates
such as our third party vendors, business partners, contractors and service
providers to assess their level of readiness.

   Our Software Systems group provides Year 2000 services to other companies so
we are using internal expertise to develop and implement our program.  We are
using the same common project methodologies that we use for our customers'
programs.  We are in the process of assessing whether all of our business unit
products and services are Year 2000 compliant.  Because we are an information
technology company, we have been sensitive to Year 2000 issues for a number of
years.  We do not expect our current products or services to have material Year
2000 issues.  In some cases, our government customers have contracted with us to
modify our older products to be Year 2000 compliant.  Our products are not sold
under extended warranties so we do not expect that we will have to spend any
material amounts to make any of our prior products Year 2000 compliant.
However, we are in the process of assessing all of our products, including the
products of our recently acquired businesses and we cannot be certain that Year
2000 issues will not arise.

   As part of the program, we are reviewing all of the internally developed 
and third party software that we use for accounting, manufacturing process 
and other business functions.  Because of our history of acquisitions, we 
have a number of business units that use different systems; some of which we 
know are not Year 2000 compliant.  Based upon our assessment, we may elect to 
move business units to other Year 2000 compliant systems that we currently 
use as part of an overall plan to consolidate the number of different systems 
being used.  We estimate the cost of moving business units to new systems 
will range from $3 million to $5 million of which only approximately 30% is 
related to the replacement of non-compliant systems.  Some of our business 
units may use internal resources to convert legacy application systems to be 
Year 2000 compliant.  Finally, many of our government contracts related 
business units use an accounting package that is not currently Year 2000 
compliant.  We understand that our supplier will release a Year 2000 
compliant version during the fourth quarter of 1998.  Under our maintenance 
agreement, we will receive the upgrade at no cost.  We expect to incur any 
material Year 2000 related costs during fiscal year 1999.  These costs could 
have a material adverse effect on our financial position, results of 
operations or cash flows.  If we cannot timely correct all Year 2000 
problems, these problems also may cause material adverse effects on our 
financial position, results of operations or cash flows.

                                          7.
<PAGE>

   After we complete the assessment of our Year 2000 readiness, we plan on
developing contingency plans in the event that our internal systems or our third
party business associates' systems are not timely corrected.

   Finally, we have formed a Year 2000 steering committee to monitor 
implementation of our overall program and the plans of each of the business 
units.  Each of the business units has formed steering committees to develop 
and implement compliance plans.

   ANTI-TAKEOVER EFFECTS OF CERTAIN CHARTER PROVISIONS; RIGHTS PLAN.  Our
corporate charter documents include safeguards against the removal and
replacement of our Board of Directors or a hostile takeover of our company.  We
also have adopted a stockholder rights plan, commonly called a poison pill,
which is intended to discourage a hostile takeover attempt.  These provisions
could depress any premium that could be paid to stockholders to acquire a
controlling interest in Titan.

   ADDITIONAL SHARES TO BE ISSUED BY THE COMPANY; SHARES ELIGIBLE FOR FUTURE
SALE.  As of October 23, 1998 we have 100 million authorized shares of common
stock, of which the following are outstanding or reserved for issuance under
outstanding options, warrants or convertible securities that were outstanding as
of September 30, 1998:

               31,870,628 common shares

                  962,530 treasury shares

               11,183,416 reserved for issuance

The foregoing outstanding shares do not include the 4,172,338 shares of 
Common Stock to be issued to the former shareholders of VisiCom or the 
approximately 3,686,667 shares to be issued  to the former shareholders of 
Delfin Systems.  Most of the outstanding shares may be sold publicly through 
the New York Stock Exchange. The volume of Titan shares traded during any 
period may positively or negatively affect the stock price.  Many of the 
shares issued in connection with our recent acquisitions were issued to 
founders and entrepreneurs of the acquired companies who may have a 
substantial portion of their net worth in Titan shares and may be motivated 
to sell shares to diversify their portfolio risk.  An increase in the volume 
of shares offered for sale could depress the price of our stock.

                                          8.
<PAGE>

                                   USE OF PROCEEDS

    All net proceeds from the sale of Titan shares will go to the 
stockholders who offer and sell their shares.  Accordingly, Titan will not 
receive any proceeds from sales of the Titan shares.

                                SELLING STOCKHOLDERS

    Titan agreed under its Agreement and Plan of Merger and Reorganization
dated August 7, 1998 among Titan, Merger Sub and VisiCom Laboratories, Inc. to
use best efforts to register the Titan Shares issued to the selling stockholders
and to keep the registration statement effective for 12 months, or, if earlier,
the completion of the offering.  Our registration of the Titan Shares does not
necessarily mean that the selling stockholders will sell all or any of the
shares.

    The shares listed below represent all of the shares that each of the
selling stockholders were issued in the merger with VisiCom Laboratories or may
own upon the release of shares from an escrow.  Under escrow agreements dated
August 24, 1998, 10% of the shares issued to the selling stockholders were
deposited into escrow.  Titan may use the escrowed shares to satisfy our
indemnification claims if there is a breach of certain representations and
warranties made in the Agreement and Plan of Merger and Reorganization:

<TABLE>
<CAPTION>
                                    SHARES BENEFICIALLY                    SHARES BENEFICIALLY
                                           OWNED                                  OWNED
                                     PRIOR TO OFFERING                      AFTER OFFERING(2)
                                   ---------------------       SHARES      -------------------
                                                                BEING
      SELLING STOCKHOLDER           NUMBER    PERCENT(1)       OFFERED           NUMBER
- -----------------------------      --------   ----------      ---------    -------------------
<S>                               <C>         <C>             <C>          <C>
CLM2, Inc. (3)                    1,582,380      4.85%        1,582,380                    0
Clifton Cooke, Jr. (4)              684,980      2.10%          604,980               80,000
Scott R. Laidig (5)                 581,541      1.78%          493,791               87,750
VisiCom Savings Plan & Trust        272,497        *            272,497                    0
Charles C.Schooler (6)              249,969        *            249,969                    0
Gene Kennon                         117,331        *             17,202              100,129
Michael Mollin (9)                  100,595        *             10,595               90,000
Gayle Piret                          96,552        *             96,552                    0
Robert Babbush (8)                   87,096        *             21,996               65,100
Clifton Cooke, Sr.                   78,640        *             53,640               25,000
Eli Warsawski (6)                    72,316        *             72,316                    0
Julius Perl                          72,316        *             72,316                    0
Nissim Shani                         72,316        *             72,316                    0
Antares Group, Inc. (7)              67,050        *             67,050                    0
John Bicknas                         61,897        *              9,065               52,832
Colin Hirayama                       54,145        *             37,995               16,150
Rob Holmes                           51,735        *             39,713               12,022
Cohen Insurance Employee             44,700        *             44,700                    0
   Retirement Fund
Joseph J. Cohen                      44,700        *             44,700                    0
Karl T. Gould                        44,700        *             44,700                    0
Carol M. Jaxon                       35,760        *             35,760                    0
Tim Elsmore                          35,020        *              7,509               27,511
Paul Shatz Trust                     27,673        *             27,673                    0
William Dedman                       25,662        *             16,326                9,336


                                       9.
<PAGE>

Kathleen Bescher                     25,080        *             25,080                    0
John Bloomquist                      23,909        *             23,284                  625
Karl and Laura Kail                  23,500        *             23,500                    0
Ed Ries                              19,892        *             19,892                    0
Ted Mackay                           19,698        *             19,968                    0
Wendy Scott Reitherman               17,880        *             17,880                    0
Mark Winkler                         12,584        *              9,834                2,750
Bingham, Dana, Gould                 10,920        *             10,920                    0
Larry White                          10,519        *              6,527                3,992
James and Janice Kerr                 8,872        *              8,872                    0
Glenn Jackson                         8,194        *              6,527                1,667
Terrence Nelson                       2,235        *              2,235                    0
Jim Treadwell                         2,221        *              1,596                  625
</TABLE>

* Represents less than one percent.

(1) Applicable percentage of ownership is based on 31,870,628 shares of Common
    Stock outstanding on September 30, 1998 (excluding the shares to be issued
    to the selling shareholders and the former shareholders of Delfin Systems
    as merger consideration).

(2) Assumes that each selling shareholder elects to sell all shares offered.

(3) The stockholder owes Titan's wholly owned subsidiary, VisiCom Laboratories,
    $4.6 million, payable on February 7, 1999.  1,950,000 Titan shares owned by
    the stockholder secure the note and are the sole recourse in the event of a
    default.  The stockholder had a representative on VisiCom's board prior to
    the merger.

(4) The stockholder is now the Executive Vice President for Corporate
    Development of Titan and continues to be the Chief Executive Officer and a
    director of VisiCom, which he founded. Mr. Cooke is the son of Clifton
    Cooke, Sr. who is also a selling stockholder.

(5) The stockholder is a Vice President of VisiCom.

(6) The stockholder was a director of VisiCom prior to the merger.

(7) The stockholder had a representative on VisiCom's board prior to the
    merger.  The stockholder licenses technology to VisiCom and receives
    royalty and other payments.

(8) The stockholder is a Vice President and Secretary of VisiCom.

(9) The stockholder is the Chief Financial Officer and Treasurer of VisiCom.

                                PLAN OF DISTRIBUTION

  The selling stockholders may offer their Titan Shares at various times in one
or more of the following transactions:

  - on the New York Stock Exchange or any other exchange where our common stock
    is listed;

  - in the over-the-counter market;

  - in negotiated transactions not on an exchange or over-the-counter;


                                         10.
<PAGE>

  - in connection with short sales of Titan shares;

  - by pledge to secure debts or other obligations;

  - in connection with the writing of call options, in hedge transactions and
in settlement of other transactions; or

  - in a combination of any of the above transactions.

  The selling stockholders may sell their shares at market prices prevailing at
the time of sale, at prices related to such prevailing market prices, at
negotiated prices or at fixed prices.

  The selling stockholders may use broker-dealers to sell their shares.  If
broker-dealers are used, they will either receive discounts or commissions from
the selling stockholder, or they will receive commissions from the purchasers of
shares for whom they acted as agents.


                        WHERE YOU CAN FIND MORE INFORMATION

  We file annual, quarterly and current reports, proxy statements and other
information with the SEC.  You may read and copy any document at the SEC's
public reference rooms in Washington, D.C., New York, New York and Chicago,
Illinois.  Please call the SEC at 1-800-SEC-0330 for further information on
public reference rooms.  Our SEC filings are also available to the public from
the SEC's Website at http://www.sec.gov.  We also have a Website at
http://www.titan.com with links to our SEC filings.

  The SEC allows us to "incorporate by reference" this information we file with
them.  This means that we can disclose important information to you by referring
you to those documents.  The information incorporated by reference is considered
to be part of this prospectus.  Information that we file later with the SEC will
automatically update and supersede this information.  We incorporate by
reference the documents listed below and any future filings we make with the SEC
under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934:

1.  Annual Report on Form 10-K/A for the fiscal year ended December 31, 1997;

2.  Quarterly Report on Form 10-Q/A for the fiscal quarter ended March 31,
1998;

3.  Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 1998;

4.  Proxy Statements for the 1998 Annual Meeting of Stockholders held on May
14, 1998 and for a Special Meeting of Stockholders held on October 21, 1998;

5.  Current Reports on Form 8-K dated February 26, 1998 and June 30, 1998, as
amended by Current Report on Form 8K/A; and

6.  Registration Statement on Form S-4 (No. 333-60122) filed on September 24, 
1998.

                            DESCRIPTION OF CAPITAL STOCK

    As of the date of this prospectus, our Certificate of Incorporation
authorizes us to issue 100,000,000 shares of common stock and 2,500,000 shares
of preferred stock, including 694,872 shares of Cumulative Convertible
Preferred.  As of September 30, 1998, 31,870,628 shares of common stock and
694,872 shares of Cumulative Convertible Preferred were outstanding.  The Board
of Directors may issue shares of the preferred stock at any time, in one or more
series without stockholder approval.  The Board of Directors determines the
designation, relative rights, preferences and limitations of each series of
preferred stock.

    Each share of Cumulative Convertible Preferred has a liquidation preference
of $20 per share plus unpaid dividends and each share of Series B Preferred has
a liquidation preference of $6 per share plus unpaid dividends.


                                         11.
<PAGE>

    Each share of Cumulative Convertible Preferred is entitled to dividends at
the rate of $1 per share per year with dividends paid quarterly.  Subject to the
rights of our preferred stockholders, our common stockholders have the right to
receive dividends that our Board of Directors declares in the form of cash,
securities or property.

    We may redeem the Cumulative Convertible Preferred at any time for $20 per
share.  The holders may convert each share of Cumulative Convertible Preferred
into two-thirds of one share of common stock (subject to anti-dilution
adjustments).

    Common stockholders have the right to vote one vote per share on all
matters that require their vote.  This could change if we amend our charter
documents.  Holders of Cumulative Convertible Preferred Stock are entitled to
one-third vote for each share of preferred and vote together with common stock
on all matters submitted to the common stockholders.  Holders of Series B
Preferred are entitled to one vote for each share of preferred and vote together
with common stock on all matters submitted to the common stockholders.

    On August 17, 1995, our Board of Directors adopted a Shareholder Rights
Plan or poison pill and distributed rights to purchase Series A Junior Preferred
Stock for each of our outstanding shares of common stock.  The rights become
exercisable if a person or group acquires, in a transaction not approved by our
Board of Directors, 15% or more of our common stock or announces a tender offer
for 15% or more of our common stock.

    Our transfer agent for the common stock is American Stock Transfer and
Trust Company.

                                   LEGAL MATTERS

    For purposes of this offering, Cooley Godward LLP, San Diego, California,
is giving it opinion on the validity of the shares.


                                         12.
<PAGE>

                                      EXPERTS

   The consolidated financial statements of The Titan Corporation as of 
December 31, 1997 and 1996, and for each of the three years in the period 
ended December 31, 1997 and the consolidated financial statements of Horizons 
Technology, Inc. as of January 31, 1998 and 1997, and for each of the three 
years in the period ended January 31, 1998, incorporated by reference in this 
prospectus and registration statement have been audited by Arthur Andersen 
LLP, independent public accountants, as indicated in their reports with 
respect thereto, and are incorporated by reference herein in reliance upon 
the authority of said firm as experts in giving said reports.

   The consolidated financial statements of DBA Systems, Inc., as of June 30,
1997 and 1996, and for each of the three years in the period ended June 30, 1997
incorporated by reference in this prospectus and registration statement have
been audited by Deloitte & Touche LLP, independent auditors, as stated in their
report which is incorporated herein by reference, and have been so incorporated
in reliance upon the report of such firm given upon their authority as experts
in accounting and auditing.



                                         13.
<PAGE>

                                      PART II

                       INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

  The following table sets forth all expenses payable by the Registrant in
connection with the sale of the Common Stock being registered. All the amounts
shown are estimates except for the registration fee.

<TABLE>
               <S>                                   <C>
               SEC registration fee. . . . . . . .   $ 5,015
               Legal fees and expenses . . . . . .   $10,000
               Accounting fees and expenses. . . .   $10,000
               Printing and Engraving. . . . . . .   $20,000
               Miscellaneous . . . . . . . . . . .   $ 5,000
                                                     -------
                   Total . . . . . . . . . . . . .   $50,015
                                                     -------
</TABLE>

ITEM 15. INDEMNIFICATION OF OFFICERS AND DIRECTORS.

  Section 145 of the General Corporation Law of the State of Delaware (the
"Delaware Law") empowers a Delaware corporation to indemnify any persons who
are, or are threatened to be made, parties to any threatened, pending or
completed legal action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of such
corporation), by reason of the fact that such person was an officer or director
of such corporation, or is or was serving at the request of such corporation as
a director, officer, employee or agent of another corporation or enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines and
amounts paid in settlement of such action, suit or proceeding, provided that
such officer or director acted in good faith and in a manner he or she
reasonably believed to be in or not opposed to the corporation's best interest,
and, for criminal proceedings, had no reasonable cause to believe his or her
conduct was illegal. A Delaware corporation may indemnify officers and directors
against expenses (including attorney's fees) in connection with the defense or
settlement of an action by or in the right of the corporation under the same
conditions, except that no indemnification is permitted without judicial
approval if the officer or director is adjudged to be liable to the corporation.
Where an officer or director is successful on the merits or otherwise in the
defense of any action referred to above, the corporation must indemnify him or
her against the expenses which such officer or director actually and reasonably
incurred.

  The Registrant's Bylaws contain a provision to limit the personal liability of
the directors of the Registrant for violations of their fiduciary duty, except
to the extent such limitation of liability is prohibited by the Delaware Law.
This provision eliminates each director's liability to the Registrant or its
stockholders for monetary damages except (i) for any breach of the director's
duty of loyalty to the Registrant or its stockholders, (ii) for acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of law, (iii) under Section 174 of the Delaware Law providing for
liability of directors for unlawful payment of dividends or unlawful stock
purchases or redemptions, or (iv) for any transaction from which a director
derived an improper personal benefit. The Registrant's Bylaws provide that the
Registrant shall indemnify directors and officers to the fullest extent
permitted by law. The effect of these provisions is to eliminate the personal
liability of directors for monetary damages for actions involving a breach of
their fiduciary duty of care, including any such actions involving gross
negligence.

  In addition, Registrant has entered into indemnity agreements with its
executive officers and directors whereby Registrant obligates itself to
indemnify such officers and directors from any amounts which the officer or
director becomes obligated to pay because of any claim made against him or her
arising out of any act or omission committed while he or she is acting in his or
her capacity as a director and/or officer of Registrant.

  Registrant maintains directors and officers liability insurance coverage that
insures its officers and directors against certain losses that may arise out of
their positions with the Registrant and insures the Registrant for liabilities
it may incur to indemnify its officers and directors.


                                        II-1.
<PAGE>


ITEM 16. EXHIBITS.


<TABLE>
<CAPTION>
   EXHIBIT
    NUMBER                         DESCRIPTION OF DOCUMENT
    ------                         ------------------------
<S>          <C>
      5.1    Opinion of Cooley Godward LLP.
     23.1    Consent of Arthur Andersen LLP.
     23.2    Consent of Arthur Andersen LLP.
     23.3    Consent of Deloitte & Touche LLP.
     23.4    Consent of Cooley Godward LLP. Reference is made to Exhibit 5.1.
     24.1    Power of Attorney. Reference is made to page II-4.
</TABLE>
____________


ITEM 17. UNDERTAKINGS.

  Insofar as indemnification for liabilities arising under the Securities Act of
1933 may be permitted to directors, officers, and controlling persons of the
Registrant pursuant to the provisions described in Item 15 or otherwise, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer, or controlling
person of the Registrant in the successful defense of any action, suit, or
proceeding) is asserted by such director, officer, or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

  The undersigned Registrant hereby undertakes:

     (1) to file, during any period in which offers or sales are being made, a
  post-effective amendment to this registration statement:

           (i) to include any prospectus required by section 10(a)(3) of the 
     Securities Act of 1933;

           (ii) to reflect in the prospectus any facts or events arising after
     the effective date of the registration statement (or the most recent
     post-effective amendment thereof) which, individually or in the aggregate,
     represent a fundamental change in the information set forth in the
     registration statement;

           (iii) to include any material information with respect to the plan of
     distribution not previously disclosed in the registration statement or any
     material change to such information in the registration statement;

     provided, however, that clauses (i) and (ii) do not apply if the
  information required to be included in a post-effective amendment by these
  clauses is contained in periodic reports filed by the Registrant pursuant
  to section 13 or section 15(d) of the Securities Exchange Act of 1934 that
  are incorporated by reference in the registration statement;

     (2) that, for the purpose of determining any liability under the
  Securities Act, each such post-effective amendment shall be deemed to be a
  new registration statement relating to the securities offered therein, and
  the offering of such securities at that time shall be deemed to be the
  initial bona fide offering thereof; and

     (3) to remove from registration by means of a post-effective amendment
  any of the securities being registered which remain unsold at the
  termination of the offering.


                                        II-2.
<PAGE>

  The undersigned Registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the Company's
annual report pursuant to section 13(a) or section 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the registration statement shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

                                        II-3.
<PAGE>



                                     SIGNATURES

  Pursuant to the requirements of the Securities Act of 1933, as amended, the 
Registrant certifies that it has reasonable grounds to believe that it meets 
all of the requirements for filing on Form S-3 and has duly caused this 
Post-Effective Amendment to the Registration Statement Form S-3 to be signed 
on its behalf by the undersigned, thereunto duly authorized, in the City and 
County of San Diego, State of California, on December 4, 1998.

                                THE TITAN CORPORATION

                                By:
                                     /s/ Eric M. De Marco
                                     ------------------------------
                                     Eric M. De Marco,
                                     Executive Vice President and Chief
                                     Financial Officer


                                 POWER OF ATTORNEY

  KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Ira Frazer as his true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, for him and in his name, place, and stead, in any and all
capacities, to sign any and all amendments (including post-effective amendments,
exhibits thereto and other documents in connection therewith) to this
Registration Statement and any subsequent registration statement filed by the
registrant pursuant to Rule 462(b) of the Securities Act of 1933, as amended,
which relates to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in connection therewith,
as fully to all intents and purposes as he might or could do in person, hereby
ratifying and confirming all that said attorneys-in-fact and agents, or any of
them, or their or his substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.

  Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.


Signature                 Title                                     Date
- ---------                 -----                                     ----

          *
- ------------------------
       J. S. Webb         Chairman of the Board of Directors  December 4, 1998

          *
- ------------------------
       Gene W. Ray        President and Chief Executive       December 4, 1998
                          Officer (Principal Executive
                          Officer) and Director

          *
- ------------------------
     Eric M. DeMarco      Executive Vice President and Chief  December 4, 1998
                          Financial Officer (Principal
                          Financial and Accounting Officer)

           
- ------------------------
    Charles R. Allen      Director

          *
- ------------------------
   Joseph F. Caligiuri    Director                            December 4, 1998


                                        II-4.

<PAGE>

          *
- ------------------------
     Daniel J. Fink       Director                            December 4, 1998


- ------------------------
   Robert E. La Blanc     Director             

          *
- ------------------------
    Thomas G. Pownall     Director                            December 4, 1998



*By  /s/  IRA FRAZER
- ------------------------
      Ira Frazer
   Attorney-In-Fact


                                        II-5.
<PAGE>

                                 INDEX TO EXHIBITS

<TABLE>
<CAPTION>
        EXHIBIT
        NUMBER                  DESCRIPTION OF DOCUMENT
        ------                  -----------------------
        <S>     <C>
         5.1    Opinion of Cooley Godward LLP.
        23.1    Consent of Arthur Andersen LLP.
        23.2    Consent of Arthur Andersen LLP.
        23.3    Consent of Deloitte & Touche LLP.
        23.4    Consent of Cooley Godward LLP. Reference is made
                to Exhibit 5.1.
        24.1    Power of Attorney. Reference is made to page II-4.
</TABLE>
____________




<PAGE>



                          [COOLEY GODWARD LLP LETTERHEAD]


December 4, 1998


The Titan Corporation
3033 Science Park Road
San Diego, CA  92121

Ladies and Gentlemen:

You have requested our opinion with respect to certain matters in connection 
with the filing by The Titan Corporation (the "Company") of the 
Post-Effective Amendment to this Registration Statement on Form S-3 (No. 
333-66149) (the "Registration Statement") with the Securities and Exchange 
Commission (the "Commission") covering the offering of 4,172,338 shares of 
the Company's Common Stock to be sold by certain stockholders, as described 
in the Registration Statement (the "Shares").

In connection with this opinion, we have examined and relied upon the
Registration Statement and related Prospectus, the Company's Restated
Certificate of Incorporation and Bylaws, as amended, and such other documents,
records, certificates, memoranda and other instruments as we deem necessary as a
basis for this opinion.  We have assumed the genuineness and authenticity of all
documents submitted to us as originals, the conformity to originals of all
documents submitted to us as copies thereof, and the due execution and delivery
of all documents where due execution and delivery are a prerequisite to the
effectiveness thereof.

On the basis of the foregoing, and in reliance thereon, we are of the opinion
that the Shares, are validly issued, fully paid and nonassessable.

We consent to the reference to our firm under the caption "Legal Matters" in the
Prospectus included in the Registration Statement and to the filing of this
opinion as an exhibit to the Registration Statement.

Very truly yours,


COOLEY GODWARD LLP

/s/ Barbara L. Borden
- --------------------------
Barbara L. Borden



<PAGE>

                     CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation by 
reference in this registration statement of our report, with respect to the 
consolidated financial statements of The Titan Corporation, dated June 10, 
1998 (except with respect to the matters discussed in Note 16, as to which 
the date is June 30, 1998) included in The Titan Corporation's Form S-4 
Registration Statement dated September 24, 1998 (File No. 333-60122) and to 
all references to our Firm included in this registration statement.

                                   ARTHUR ANDERSEN LLP


San Diego, California
November 30, 1998



<PAGE>



                     CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation by 
reference in this registration statement of our report, with respect to the 
consolidated financial statements of Horizons Technology, Inc., dated March 
9, 1998 included in The Titan Corporation's Form S-4 Registration Statement 
dated June 10, 1998 (File No. 333-47633) and to all references to our Firm 
included in this registration statement.

                                   ARTHUR ANDERSEN LLP


San Diego, California
November 30, 1998



<PAGE>



                            INDEPENDENT AUDITORS CONSENT


We consent to the incorporation by reference in this Post-Effective 
Amendment to the Registration Statement of The Titan Corporation on Form S-3 
(No. 333-66149) of our report on DBA Systems, Inc. as of June 30, 1997 and 
1996 and for each of the years in the three year period ended June 30, 1997, 
dated August 20, 1997, appearing in the Registration Statement on Form S-4 
(No. 333-45719) of The Titan Corporation and to the reference to us under the 
hearing "Experts" in the Prospectus, which is part of this Registration 
Statement.

DELOITTE & TOUCHE LLP

Orlando, Florida
November 30, 1998



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