Regulations last checked for updates: Feb 07, 2026

Title 46 - Shipping last revised: Jan 15, 2026
All TitlesTitle 46Chapter IPart 112Subpart 112.25 - Subpart 112.25—Emergency Systems Having an Automatic Starting Diesel Engine or Gas Turbine Driven Emergency Power Source as the Sole Emergency Power Source
View all text of Subpart 112.25 [§ 112.25-1 - § 112.25-10]
§ 112.25-5 - Failure of power from the normal source.

If there is a reduction of potential of the normal source by 15 to 40 percent, the diesel engine or gas turbine driving the final emergency power source must start automatically with no load on the emergency power source.

authority: 46 U.S.C. 3306,3703; DHS Delegation No. 00170.1, Revision No. 01.2
source: CGD 74-125A, 47 FR 15267, Apr. 8, 1982, unless otherwise noted.
cite as: 46 CFR 112.25-5
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