Exhibit 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002



     In connection with the Quarterly Report on Form 10-Q of GSE Systems, Inc.
(the "Company") for the quarter ended March 31, 2005 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned hereby certifies, pursuant to 18 U.S. C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to such
officer's knowledge:

(1)  The report fully complies with the requirements of Section 13(a) or 15(d)
     of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the Company.

Date:  May 16, 2005

/s/ John V. Moran                            /s/ Jeffery G. Hough
_________________________                    _______________________________
John V. Moran                                 Jeffery G. Hough
Chief Executive Officer                       Senior Vice President and Chief
                                              Financial Officer