UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F/A (Mark One) [_] REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2005 OR [_] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-13944 [_] SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report. None NORDIC AMERICAN TANKER SHIPPING LIMITED -------------------------------------------------------------------------------- (Exact name of Registrant as specified in its charter) ISLANDS OF BERMUDA -------------------------------------------------------------------------------- (Jurisdiction of incorporation or organization) Thistle House 4 Burnaby Street Hamilton, HM11 Bermuda (Address of principal executive offices) Securities registered or to be registered pursuant to Section 12(b) of the Act. NAME OF EACH EXCHANGE TITLE OF EACH CLASS ON WHICH REGISTERED Common Shares New York Stock Exchange ------------------------- ------------------------- Securities registered or to be registered pursuant to Section 12(g) of the Act: None Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report. Common Shares, par value $0.01 21,046,400 Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. |X| Yes |_| No If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. |_| Yes |X| No Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. |X| Yes |_| No Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer |X| Accelerated filer |_| Non-Accelerated filer |_| Indicate by check mark which financial statement item the Registrant has elected to follow. |_| Item 17 |X| Item 18 If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). |_| Yes |X| No EXPLANATORY NOTE The sole purpose of this Amendment No. 1 to the Annual Report on Form 20-F (the "Form 20-F") of Nordic American Tanker Shipping Limited (the "Registrant"), filed on June 30, 2006, is to note that the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. This Amendment No. 1 does not relate to the contents of the Form 20-F. SIGNATURES The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this amended annual report on its behalf. NORDIC AMERICAN TANKER SHIPPING LIMITED By: /s/ Herbjorn Hansson ----------------------------- Name: Herbjorn Hansson Title: Chairman, Chief Executive Officer and President DATED: July 19, 2006