33 CFR § 181.17 - Label numbers and letters.

---
identifier: "/us/cfr/t33/s181.17"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 181.17 - Label numbers and letters."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "181.17"
section_name: "Label numbers and letters."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "S"
subchapter_name: "BOATING SAFETY"
part_number: "181"
part_name: "MANUFACTURER REQUIREMENTS"
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; DHS Delegation 00170.1, Revision No. 01.4."
regulatory_source: "CGD 72-60, 37 FR 15779, Aug. 4, 1972, unless otherwise noted."
cfr_part: "181"
---


# 181.17 Label numbers and letters.

Letters and numbers on each label must:

(a) Be no less than one-eighth of an inch in height; and

(b) Contrast with the basic color of the label, except that the date of certification may be permanently stamped, engraved, or embossed on the label.