Exhibit 17.1

February 27, 2012

GSE Systems, Inc.

1332 Londontown Boulevard

Sykesville, MD 21784

Attn:  Jeffery G. Hough, SVP, Chief Financial Officer and Secretary

Dear Mr. Hough,

I hereby resign from the Board of Directors of GSE Systems, Inc., effective immediately.

Very truly yours,

/s/ Michael Feldman

Michael Feldman