There must be ground detection for each:
(a) Electric propulsion system;
(b) Ship's service power system;
(c) Lighting system; and
(d) Power or lighting distribution system that is isolated from the ship's service power and lighting system by transformers, motor generator sets, or other devices.
authority: 46 U.S.C. 3306,
3703; DHS Delegation No. 00170.1, Revision No. 01.2. Section 111.05-20 and Subpart 111.106 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905
source: CGD 74-125A, 47 FR 15236, Apr. 8, 1982, unless otherwise noted.
cite as: 46 CFR 111.05-21