---
kind: "section"
citation: "46 C.F.R. § 125.100"
title: "46"
number: "125.100"
heading: "Applicability."
url: "https://uscodex.org/cfr/46/125.100"
---

# §125.100. Applicability.

- (a) Except as provided by paragraphs [(c)](#c) or [(e)](#e) of this section, this subchapter applies to each offshore supply vessel (OSV) of United States flag contracted for, or the keel of which was laid, on or after March 15, 1996.
- (b) Each OSV contracted for, or the keel of which was laid, before March 15, 1996, must have been constructed and inspected to comply with—
  - (1) The regulations in effect until March 15, 1996 (46

    CFR subchapter I or subchapter T, as appropriate), as they existed at the time of construction; or

  - (2) **The regulations in this subchapter.**
- (c) Each OSV permitted grandfathering under [paragraph (b)(1)](#b-1) of this section must have completed construction and have a Certificate of Inspection by March 16, 1998.
- (d) Each OSV of at least 6,000 GT ITC (500 GRT if GT ITC is not assigned), as defined in [§ 125.160](/cfr/46/125.160.md) of this part, contracted for, or the keel of which was laid, before August 18, 2014, must be constructed and inspected to comply with--
  - (1) The regulations in effect until August 18, 2014 ([46 CFR](/cfr/46.md) subchapter I), as they existed at the time of construction; or
  - (2) **The regulations in this subchapter.**
- (e) Each OSV constructed and inspected in accordance with [paragraph (d)(1)](#d-1) of this section must complete construction and have a Certificate of Inspection by August 18, 2016.
- (f) The regulations in this subchapter have preemptive effect over State or local regulations in the same field.
- (g) As used in this subchapter, the term “vessels contracted for” refers not only to the contracting for the construction of a vessel, but also to the contracting for a major conversion to a vessel, the contracting for the conversion of a vessel to an offshore supply vessel or liftboat, and the changing of service or route of a vessel if such changing increases or modifies the general requirements for the vessel or increases the hazards to which it might be subjected.

## Notes

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49321, Sept. 19, 1997, as amended by USCG-2012-0208, 79 FR 48932, Aug. 18, 2014; USCG-2012-0196, 81 FR 48271, July 22, 2016]

### Authority

Authority: 46 U.S.C. 2103, 3306, 3307; 49 U.S.C. App. 1804; sec. 617, Pub. L. 111-281, 124 Stat. 2905; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 82-004 and CGD 86-074, 62 FR 49321, Sept. 19, 1997, unless otherwise noted.

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49321, Sept. 19, 1997, as amended by USCG-2012-0208, 79 FR 48932, Aug. 18, 2014; USCG-2012-0196, 81 FR 48271, July 22, 2016]