46 C.F.R. § 111.25-15 Duty cycle.
Title 46 - Shipping
Each motor must be rated for continuous duty, except a motor for an application listed in Table 111.25–15 or a similar duty must meet the minimum short-time rating stated in the table.
Title 46: Shipping
PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.25—Motors
§ 111.25-15 Duty cycle.
Table 111.25-15------------------------------------------------------------------------ Minimum short-time rating of Application of motor motor, in hours------------------------------------------------------------------------Deck winch and direct acting capstan...... Half.Deck winch with hydraulic transmission.... Continuous at no load followed by \1/2\ hr. at full load.Direct acting windlass.................... One fourth.Windlass with hydraulic transmission...... Half hour idle pump operation, followed by \1/ 4\ hr. full load operation.Steering gear, direct acting.............. One.Steering gear, indirect drive............. Continuous operation at 15 pct. load followed by 1 hr. at full load.Watertight door operators................. \1/12\.Boat winches.............................. \1/12\.------------------------------------------------------------------------
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