To continue to receive ships, a port or terminal must hold one or more Certificates of Adequacy to show compliance with—

(a) Subpart B of this part if it receives oceangoing tankers, or any other oceangoing ship of 400 gross tons or more, carrying oily mixtures.

(b) Subpart C of this part if it receives oceangoing ships carrying NLSs.

(c) Subpart D of this part if it receives—

(1) The ships under paragraph (a) or (b) of this section; or

(2) Fishing vessels which offload more than 500,000 pounds of commercial fishery products from all ships during a calendar year.