GRANT OF SECURITY INTEREST

                           IN PATENTS AND TRADEMARKS

     THIS GRANT OF SECURITY INTEREST ("Grant"), effected as of March 7, 2006, is
executed by GSE Systems,  Inc., a Delaware  corporation  and GSE Power  Systems,
Inc., a Delaware Corporation  (collectively,  the "Grantor"), in favor of Laurus
Master Fund, Ltd. (the "Secured Party").

     A. Pursuant to that certain Security  Agreement dated as of the date hereof
(as amended,  restated,  supplemented  or otherwise  modified from time to time,
collectively,  the  "Security  Agreement")  among  the  Grantor,  certain  other
entities  affiliated  with the  Grantor,  and the Secured  Party,  the terms and
provisions of which are hereby incorporated herein as if fully set forth herein,
the  Grantor and such other  entities  have  granted a security  interest to the
Secured  Party in  consideration  of the Secured  Party's  agreement  to provide
financial  accommodations  to GSE  Systems,  Inc., a Delaware  corporation,  and
certain subsidiaries of GSE Systems, Inc.

     B. The Grantor (1) has adopted,  used and is using the trademarks reflected
in the trademark  registrations and trademark  applications in the United States
Patent and Trademark  Office more  particularly  described on Schedule 1 annexed
hereto as part hereof (the "Trademarks"),  and (2) has registered or applied for
registration  in the United States  Patent and  Trademark  Office of the patents
more  particularly  described  on Schedule 2 annexed  hereto as part hereof (the
"Patents").

     C. The  Grantor  wishes  to  confirm  its grant to the  Secured  Party of a
security interest in all right,  title and interest of the Grantor in and to the
Trademarks and Patents, and all proceeds thereof,  together with the business as
well as the goodwill of the business symbolized by, or related or pertaining to,
the Trademarks, and the customer lists and records related to the Trademarks and
Patents and all causes of action  which may exist by reason of  infringement  of
any of the  Trademarks  and Patents  (collectively,  the "T&P  Collateral"),  to
secure the payment,  performance and observance of the Obligations (as that term
is defined in the Security Agreement).

     NOW, THEREFORE,  for good and valuable  consideration,  receipt of which is
hereby acknowledged:

     1. The Grantor does hereby  further  grant to the Secured  Party a security
interest  in  the  T&P  Collateral  to  secure  the  full  and  prompt  payment,
performance and observance of the Obligations.

     2. The Grantor agrees to perform,  so long as the Security  Agreement is in
effect,  all acts reasonably  deemed necessary or desirable by the Secured Party
to permit and assist it, at the  Grantor's  expense,  in obtaining and enforcing
the Trademarks and Patents in any and all countries.  Such acts may include, but
are not limited to,  execution of documents  and  assistance or  cooperation  in
legal  proceedings.  The  Grantor  hereby  appoints  the  Secured  Party  as the
Grantor's   attorney-in-fact  to  execute  and  file  any  and  all  agreements,
instruments,  documents and papers as the Secured Party may reasonably determine
to be necessary or desirable to evidence the Secured Party's  security  interest
in the  Trademarks and Patents or any other element of the T&P  Collateral,  all
acts of such attorney-in-fact being hereby ratified and confirmed.

     3. The Grantor acknowledges and affirms that the rights and remedies of the
Secured  Party  with  respect to the  security  interest  in the T&P  Collateral
granted hereby are more fully set forth in the Security Agreement and the rights
and remedies set forth herein are without  prejudice to, and are in addition to,
those set forth in the Security  Agreement.  In the event that any provisions of
this Grant are deemed to conflict with the Security Agreement, the provisions of
the Security Agreement shall govern.

     4.  The  Grantor  hereby  authorizes  the  Secured  Party  to file all such
financing  statements or other instruments to the extent required by the Uniform
Commercial Code and agrees to execute all such other  documents,  agreements and
instruments  as may be required or  reasonably  deemed  necessary by the Secured
Party,  in each case for  purposes of affecting or  continuing  Secured  Party's
security interest in the T&P Collateral.

     IN WITNESS  WHEREOF,  the Grantor has caused this instrument to be executed
as of the day and year first above written.

                                        GSE SYSTEMS INC.

                                        By:______________________________
                                        Name: John V. Moran
                                        Title: Chief Executive Officer


                                        GSE POWER SYSTEMS, INC.
                                        By:______________________________
                                        Name: John V. Moran
                                        Title:  Chief Executive Officer


                                        LAURUS MASTER FUND, LTD.
                                        By:______________________________
                                        Name:
                                        Title:


                    SCHEDULE 1 TO GRANT OF SECURITY INTEREST

                REGISTERED TRADEMARKS AND TRADEMARK APPLICATIONS

                        Registration or         Registration or
Trademark               Application Number      Application Date        Country
_________               __________________      ________________        ________

Registration or

Clamp                     2438097               Registered         United States
(GSE Systems, Inc.)


D/3                       2436421               Registered         United States
(GSE Systems, Inc.)


D3 Architect Stylized     2445702               Registered         United States
(GSE Systems, Inc.)


D/3 Dataserver Stylized   2440115               Registered         United States
(GSE Systems, Inc.)


D/3 DCS                   2434720               Registered         United States
(GSE Systems, Inc.)


D/3 Manager Stylized      2803881               Registered         United States
(GSE System, Inc.)


D/3 Report Writer         2450565               Registered         United States
Stylized (GSE Systems, Inc.)


D/3 Trendr                2438098               Registered         United States
(GSE Systems, Inc.)


ESMART                    2784856               Registered         United States
(GSE Systems, Inc.)


Facets GSE Systems        2472790               Registered         United States
Services & Support & Design
(GSE Systems, Inc.)


Flexbatch                 1950809               Registered         United States
(GSE Systems, Inc.)


GAARDS                    2789627               Registered         United States
(GSE Systems, Inc.)


GSE Systems               2220635               Registered         United States
(GSE Systems, Inc.)


GSE Systems               2124458               Registered         United States
(GSE Systems, Inc.


GSE Systems & Designs     2257367               Registered         United States
(GSE System, Inc.)


GSE Systems & Designs     2145529               Registered         United States
(GSE Systems, Inc.)


SABL
(GSE Systems, Inc.)       2438096               Registered         United States


Simsuite Pro              2777658               Registered         United States
(GSE Systems, Inc.)


Smarttutor                2776533               Registered         United States
(GSE Systems, Inc.)


Strata                    2472791               Registered         United States
(GSE Systems, Inc.)


Totalvision               2430921               Registered         United States
(GSE Systems, Inc.)


Jade
(GSE Systems, Inc.)       76/315027             Pending            United States


4D & Design               75/748111             Abandoned          United States


4D Discover Define
 Develop DO & Design      75/748100             Abandoned          United States
(GSE Systems, Inc.)

Batchcad Stylized         75/748121             Abandoned          United States
(GSE Systems, Inc.)


GControl+                 75/777338             Abandoned          United States
(GSE Systems, Inc.)


GElectric+                75/777339             Abandoned          United States
(GSE Systems, Inc.)


GFlow+                    75/777336             Abandoned          United States
(GSE Systems, Inc.)


GLogic+                   75/777337             Abandoned          United States
(GSE Systems, Inc.)


GPower+                   75/777340             Abandoned          United States
(GSE System, Inc.)


Flexbatch                 1950809               Registered         United States
(GSE Power Systems, Inc.)


Opensim                   2723506               Registered         United States
(GSE Power Systems, Inc.)


Retact                    1671660               Registered         United States
(GSE Power Systems, Inc.)


Thor                      2709265               Registered         United States
(GSE Power Systems, Inc.)


Powerpeak                 76/520125             Pending            United States
(GSE Power Systems, Inc.)


S3 Technologies           1764109               Cancelled          United States
(GSE Power Systems, Inc.)


S3 Technologies           177497                Cancelled          United States
(GSE Power Systems, Inc.)


                    SCHEDULE 2 TO GRANT OF SECURITY INTEREST

                        PATENTS AND PATENT APPLICATIONS

                          Registration or       Registration or
Patent                    Application Number    Application Date        Country
_________               __________________      ________________        ________

Real Time Analysis        5225147               Issued             United States
Of Light Water Core
Neutronics

(GSE Systems, Inc.)


Real-Time Analysis        5619433               Issued             United States
Of Power Plant
Thermohydraulic Phenomena

(GSE Systems, Inc.)


Computer Implemented      5726914               Issued             United States
Process And Computer
Architecture For
Performance Analysis

(GSE Systems, Inc.)


Computer Implemented      5917730               Issued             United States
Object Oriented
Visualization System
And Method

(GSE Systems, Inc.)


System And A Method       4568288               Issued             United States
To Visually Simulate
Subsystems In A Fossil
Fuel Power Plant Simulator
(GSE Power Systems, Inc.)


Not Available             4120028               Issued             United States


STATE OF _______________)
                        )  ss.:
COUNTY OF ______________)

     On this ____ day of _________,  ____,  before me  personally  came ________
________________  who, being by me duly sworn, did state as follows:  that [s]he
is ______________  of GSE Systems,  Inc. that [s]he is authorized to execute the
foregoing Grant on behalf of said corporation and that [s]he did so by authority
of the Board of Directors of said corporation.

                                                _________________________
                                                Notary Public

STATE OF _______________)
                        )  ss.:
COUNTY OF ______________)

     On this ____ day of _________,  ____,  before me  personally  came ________
________________  who, being by me duly sworn, did state as follows:  that [s]he
is ______________ of GSE Power Systems, Inc. that [s]he is authorized to execute
the  foregoing  Grant on behalf  of said  corporation  and that  [s]he did so by
authority    of    the    Board    of    Directors    of    said    corporation.

                                                _________________________
                                                Notary Public

STATE OF _______________)
                        )  ss.:
COUNTY OF ______________)

     On this ____ day of _________,  ____,  before me  personally  came ________
_____________________  who, being by me duly sworn,  did state as follows:  that
[s]he  is  __________________  of  Laurus  Master  Fund,  Ltd.,  that  [s]he  is
authorized to execute the foregoing Grant on behalf of said corporation and that
[s]he  did so by  authority  of the  Board  of  Directors  of said  corporation.

                                                ____________________________
                                                Notary Public