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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 FORM 20 - F REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR 12 ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to OR 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 : Not applicable For the transition period from to Commission file number 001-13944 NORDIC AMERICAN TANKERS LIMITED ( Exact name of Registrant as specified in its charter ) ( Translation of Registrant's name into English ) BERMUDA ( Jurisdiction of incorporation or organization ) LOM BUILDING 27 REID STREET Hamilton HM 11 Bermuda ( Address of principal executive offices ) Herbjorn Hansson , Chairman , President , and Chief Executive Officer , Tel No. 1 ( 441 ) 292-7202 , LOM Building , 27 Reid Street , Hamilton HM 11 , Bermuda ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person )