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. |