46 CFR 161.013-7

§ 161.013-7 Signal requirements.

United States · 46 CFR — Shipping · Status: effective

Cite this

Citation: 46 CFR 161.013-7, § 161.013-7 Signal requirements, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/229658
Permanent ID: ys:prov:229658@1
SHA-256: 05cb3fe16b7f178ab6458d29660d515f99eff838abc4377e67e9d02d9a8a8231

The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.

Full text

(a) An electric light must have a flash characteristic of the International Morse Code for S-O-S and, under design conditions, (1) Each short flash must have a duration of 1/3 second; (2) Each long flash must have a duration of 1 second; (3) The dark period between each short flash must have a duration of 1/3 second; (4) The dark period between each long flash must have a duration of 1/3 second; (5) The dark period between each letter must have a duration of 2 seconds; (6) The dark period between each S-O-S signal must have a duration of 3 seconds. (b) The flash characteristics described in paragraph (a) must be produced automatically when the signal is activated.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.