33 CFR §164.39

1. (a)This section applies to each foreign tanker of 10,000 gross tons or more, except a public vessel, that—
   1. (1)Transfers oil at a port or place subject to the jurisdiction of the United States; or
   2. (2)Otherwise enters or operates in the navigable waters of the United States, except a vessel described by § 164.02 of this part.
2. (b)Definitions. The terms used in this section are as follows:
   1. (1)For which the building contract is placed on or after June 1, 1979;
   2. (2)In the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after January 1, 1980;
   3. (3)The delivery of which occurs on or after June 1, 1982; or
   4. (4)That has undergone a major conversion contracted for on or after June 1, 1979; or construction of which was begun on or after January 1, 1980, or completed on or after June 1, 1982.
3. (c)Each tanker constructed on or after September 1, 1984, must meet the applicable requirements of Chapter II-1, Regulations 29 and 30, of SOLAS 74.
4. (d)Each tanker constructed before September 1, 1984, must meet the requirements of Chapter II-1, Regulation 29.19, of SOLAS 74.
5. (e)Each tanker of 40,000 gross tons or more, constructed before September 1, 1984, that does not meet the single-failure criterion of Chapter II-1, Regulation 29.16, of SOLAS 74, must meet the requirements of Chapter II-1, Regulation 29.20, of SOLAS 74.
6. (f)Each tanker constructed before September 1, 1984, must meet the applicable requirements of Chapter II-1, Regulations 29.14 and 29.15, of SOLAS 74.