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e-CFR data is current as of November 25, 2020

Title 46Chapter ISubchapter JPart 111Subpart 111.25 → §111.25-15


Title 46: Shipping
PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.25—Motors


§111.25-15   Duty cycle.

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.

Table 111.25-15

   Application of motorMinimum short-time rating of motor, in hours
Deck winch and direct acting capstanHalf.
Deck winch with hydraulic transmissionContinuous at no load followed by 12 hr. at full load.
Direct acting windlassOne fourth.
Windlass with hydraulic transmissionHalf hour idle pump operation, followed by 14 hr. full load operation.
Steering gear, direct actingOne.
Steering gear, indirect driveContinuous operation at 15 pct. load followed by 1 hr. at full load.
Watertight door operators 112 .
Boat winches 112 .

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