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| Subpart 113.40 | Rudder Angle Indicator Systems | 113.40-1 – 113.40-10 | |||||||||
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46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2.
CGD 74-125A, 47 FR 15272, Apr. 8, 1982, unless otherwise noted.
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This subpart applies to self-propelled vessels.
The position of the rudder, if power-operated, must be shown at the principal steering station. If there is non-follow-up steering control at the alternative steering station, there must be a separate rudder angle indicator system for that station that is electrically independent from each other rudder angle indicator system.
(a) Each rudder angle indicator system must have a transmitter at the rudder head that is actuated by movement of the rudder with the angular movements of the rudder transmitted to a remote indicator or indicators. This system must be independent of all other systems and not receive power or signal from the steering gear control, autopilot, or dynamic positioning systems. However, the indicator may be physically located on a control console, such as an integrated bridge system, if it is readily visible by the helmsman at the steering stand.
(b) Each electric component or its enclosure must meet Type 4 or 4X of NEMA 250 or IP 56 of IEC 60529:2013 (both incorporated by reference; see § 110.10-1 of this subpart) requirements.
[CGD 74-125A, 47 FR 15272, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 28290, June 4, 1996; 62 FR 23910, May 1, 1997; USCG-2003-16630, 73 FR 65202, Oct. 31, 2008; USCG-2020-0075, 88 FR 16369, Mar. 16, 2023]