Section 32.53-1 - Application-T/ALL(a) Except as provided in paragraphs (b) and (c) of this section, this subpart applies to: (1) A U.S. crude oil tanker or product carrier of 100,000 DWT tons (metric) or more or combination carrier of 50,000 DWT tons (metric) or more, that has a keel laying date on or after January 1, 1975.(2) A new (as defined in 46 U.S.C. 3701 ) crude oil tanker or product carrier, or foreign flag crude oil tanker or product carrier of 20,000 DWT tons or more entering the navigable waters of the U.S.(3) A crude oil tanker that is equipped with a cargo tank cleaning system that uses crude oil washing.(4) An existing product carrier of 20,000 deadweight tons (metric) or more that has tank washing machines with a capacity of more than 60 cubic meters per hour after May 31, 1983.(5) Any other U.S. or foreign flag:(i) Crude oil tanker or product carrier of 70,000 deadweight tons (metric) and over after May 31, 1981;(ii) Crude oil tanker between 20,000 and 70,000 deadweight tons (metric) after May 31, 1983;(iii) Product carrier between 40,000 and 70,000 deadweight tons (metric) after May 31, 1983.(b) This subpart does not apply to vessels designed to carry only: (1) Liquefied gas cargo; or(2) Grade E cargo that is carried at a temperature lower than 5 °C below its flash point.(c) This part does not apply to vessels as stated in 46 U.S.C. 3702 .CGD 77-057a, 44 FR 66501, Nov. 19, 1979, as amended by CGD 97-057, 62 FR 51043, Sept. 30, 1997; CGD 95-028, 62 FR 51198, Sept. 30, 1997