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


<PAGE>


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.



<PAGE>


                                   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