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46 U.S.C. 3306, 4102 (as amended by Pub. L. 104-324, 110 Stat. 3901); Department of Homeland Security Delegation No. 0170.1.
USCG-2000-6931, 69 FR 34069, June 18, 2004, unless otherwise noted.
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(a) You must ensure that your vessel is fitted with a communication system between the engine room and the operating station that—
(1) Consists of either fixed or portable equipment, such as a sound-powered telephone, portable radios, or other reliable method of voice communication, with a main or reserve power supply that is independent of the electrical system on your towing vessel; and
(2) Provides two-way voice communication and calling between the operating station and either—
(i) The engine room; or
(ii) A location immediately adjacent to an exit from the engine room.
(b) Twin-screw vessels with operating-station control for both engines are not required to have internal communication systems.
(c) When the operating-station's engine controls and the access to the engine room are within 3 meters (10 feet) of each other and allow unobstructed visual contact between them, direct voice communication is acceptable instead of a communication system.