StacksVerified U.S. regulatory reference

33 CFR §151.33

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)A U.S. oceangoing ship may not carry a Category C oil-like NLS listed in § 151.49 in a cargo tank unless the ship has a Certificate of Inspection endorsed to allow the NLS to be carried in that cargo tank, and if the ship engages in a foreign voyage—
    1. (1)An Attachment for NLSs to the IOPP Certificate, issued under § 151.37(a), that allows the NLS to be carried in that cargo tank; or
    2. (2)A Certificate of Fitness issued under 46 CFR part 153 that allows the NLS to be carried in that cargo tank.
  2. (b)A foreign oceangoing ship operating in the navigable waters of the U.S. may not carry a Category C oil-like NLS listed in § 151.49 in a cargo tank unless the ship has—
    1. (1)An Attachment for NLSs to the IOPP Certificate that allows the NLS to be carried in that cargo tank; or
    2. (2)A Certificate of Compliance issued under 46 CFR part 153 to allow the NLS to be carried in that cargo tank.
  3. (c)A U.S. oceangoing ship authorized to carry certain dangerous cargoes in bulk under 46 CFR part 98 may not carry a Category C oil-like NLS listed in § 151.49 in a cargo tank unless the ship has a Certificate of Inspection endorsed to allow the NLS to be carried in that cargo tank, and if the ship engages in a foreign voyage, an NLS Certificate issued under § 151.37(b) that allows the NLS to be carried in that cargo tank.