46 CFR §111.75-18
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each self-propelled vessel over 150 gross tons when engaged on an international voyage must have on board an approved daylight signaling lamp that meets ISO 25861 (incorporated by reference, see § 110.10-1 of this subchapter).