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. |