46 CFR 143.545: Pressure vessels on new towing vessels
Last reviewed: October 14, 2026
This section gives the requirements for pressure vessels installed on new towing vessels, used in place of the requirements of § 143.300. Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet a specified part of the ABS Rules.
Applies toPressure vessels installed on new towing vessels.
What it says
Pressure vessels installed on new towing vessels must meet this section instead of the requirements of § 143.300.
46 CFR 143.545(a)“In lieu of meeting the requirements of § 143.300, pressure vessels installed on new towing vessels must meet the requirements of this section.”
Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length, Part 4, Chapter 1, Section 1.
46 CFR 143.545(b)“Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length”
The ABS Rules are incorporated by reference, and the text sends the reader to § 136.112 of this subchapter for that incorporation.
46 CFR 143.545(b)“(incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 1, Section 1.”
Common questions
Do pressure vessels on new towing vessels have to meet 46 CFR 143.300?
No. For pressure vessels installed on new towing vessels, this section applies in place of the requirements of § 143.300.
“In lieu of meeting the requirements of § 143.300, pressure vessels installed on new towing vessels must meet the requirements of this section.”
Which pressure vessels must meet the ABS Rules under this section?
Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet the ABS Rules named in this section.
“Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length”
Where are the ABS Rules for towing vessel pressure vessels incorporated by reference?
The text directs the reader to § 136.112 of this subchapter for the incorporation by reference.
“(incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 1, Section 1.”
The text of 46 CFR 143.545
Electronic Code of Federal Regulations (eCFR), current as of April 16, 2026 · Read it on eCFR
Pressure vessels
(a) In lieu of meeting the requirements of § 143.300, pressure vessels installed on new towing vessels must meet the requirements of this section.
(b) Pressure vessels over 5 cubic feet in volume and more than 15 psi maximum allowable working pressure must meet ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length (incorporated by reference, see § 136.112 of this subchapter), Part 4, Chapter 1, Section 1.
Sections it refers to
The plain-English explanation on this page was written with AI from the regulation text above and checked automatically before publishing: every quote appears in the text, every number comes from it, and a second model confirmed each statement adds nothing the text doesn't say. Regulation text current as of April 16, 2026. The regulation text governs. RegKnot is not affiliated with the U.S. Coast Guard.