33 CFR § 151.33 - Certificates needed to carry Category C Oil-like NLS.

---
identifier: "/us/cfr/t33/s151.33"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 151.33 - Certificates needed to carry Category C Oil-like NLS."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "151.33"
section_name: "Certificates needed to carry Category C Oil-like NLS."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "O"
subchapter_name: "POLLUTION"
part_number: "151"
part_name: "VESSELS CARRYING OIL, NOXIOUS LIQUID SUBSTANCES, GARBAGE, MUNICIPAL OR COMMERCIAL WASTE, AND BALLAST WATER"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1902, 1903, 1908; 46 U.S.C. 6101; 46 U.S.C. 70034; Pub. L. 104-227, 110 Stat. 3034; sec. 623, Pub. L. 108-293, 118 Stat. 1063; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; DHS Delegation No. 00170.1, Revision No. 01.4."
cfr_part: "151"
---


# 151.33 Certificates needed to carry Category C Oil-like NLS.

(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) 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) A Certificate of Fitness issued under 46 CFR part 153 that allows the NLS to be carried in that cargo tank.

(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) An Attachment for NLSs to the IOPP Certificate that allows the NLS to be carried in that cargo tank; or

(2) A Certificate of Compliance issued under 46 CFR part 153 to allow the NLS to be carried in that cargo tank.

(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.