EXHIBIT 32.1

                  INFORMATIONAL ADDENDUM TO REPORT ON FORM 10-K
            PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

            NOT FILED PURSUANT TO THE SECURITIES EXCHANGE ACT OF 1934

     The undersigned Chief Executive Officer of OYO Geospace Corporation do
hereby certify as follows:

     Solely for the purpose of meeting the requirements of Section 906 of the
     Sarbanes-Oxley Act of 2002, and solely to the extent this certification may
     be applicable to this Report on Form 10-K, the undersigned hereby certify
     that this Report on Form 10-K fully complies with the requirements of
     section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the
     information contained in this Report on Form 10-K fairly presents, in all
     material respects, the financial condition and results of operations of OYO
     Geospace Corporation.


                                                        /s/ Gary D. Owens
                                                      ------------------------
                                                Name:  Gary D. Owens
                                                Title: Chief Executive Officer
                                                       December 2, 2003