Regulations last checked for updates: Feb 06, 2026

Title 46 - Shipping last revised: Jan 15, 2026
§ 110.01-3 - Repairs and alterations.

(a) Repairs and replacements in kind must comply with either the regulations in this subchapter or those in effect when the vessel was built.

(b) Alterations and modifications, such as re-engining, re-powering, upgrading of the main propulsion control system, or replacing extensive amounts of cabling, must comply with the regulations in this subchapter.

(c) Major conversions, as defined in 46 U.S.C. 2101,such,are,Marine.

[CGD 94-108, 61 FR 28271, June 4, 1996, as amended at 62 FR 23906, May 1, 1997; USCG-2024-1103, 90 FR 52880, Nov. 24, 2025]
authority: 43 U.S.C. 1333; 46 U.S.C. 3306,3307,3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.4; § 110.01-2 also issued under 44 U.S.C. 3507. Sections 110.15-1 and 110.25-1 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905
source: CGD 74-125A, 47 FR 15232, Apr. 8, 1982, unless otherwise noted.
cite as: 46 CFR 110.01-3