ISO 25861
Ships and marine technology—Navigation—Daylight signalling lamps
Published by International Organization for Standardization (ISO)
The CFR incorporates ISO 25861 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.
The edition the CFR requires
ISO 25861:2007, First edition, December 1, 2007
As the CFR lists it: “ISO 25861:2007(E), Ships and marine technology—Navigation—Daylight signalling lamps, First edition, December 1, 2007, (“ISO 25861”)”
- Listed in 46 CFR 110.10-1(m)(1); required by46 CFR 111.75-18 ↗
How to read it
- Where to get itISO Store ↗
A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.
ISO 25861 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.