33 CFR § 183.27 - Construction of markings.

---
identifier: "/us/cfr/t33/s183.27"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 183.27 - Construction of markings."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "183.27"
section_name: "Construction of markings."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "S"
subchapter_name: "BOATING SAFETY"
part_number: "183"
part_name: "BOATS AND ASSOCIATED EQUIPMENT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 4302; Pub. L. 103-206, 107 Stat. 2439; and Department of Homeland Security Delegation No. 0170.1, para. II, (92)(b). Subpart E is also authorized by Pub. L. 114-120, 130 Stat. 27"
regulatory_source: "CGD 72-61R, 37 FR 15782, Aug. 4, 1972, unless otherwise noted."
cfr_part: "183"
---


# 183.27 Construction of markings.

Each marking required by § 183.23 must be—

(a) Capable of withstanding the combined effects of exposure to water, oil, salt spray, direct sunlight, heat, cold, and wear expected in normal operation of the boat, without loss of legibility; and

(b) Resistant to efforts to remove or alter the information without leaving some obvious sign of such efforts.

[CGD 78-034, 45 FR 2030, Jan. 10, 1980]