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 motor	Minimum short-time rating of 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.

CFR

111.25-15—Duty cycle.