46 CFR § 111.25-15 - Duty cycle.

---
identifier: "/us/cfr/t46/s111.25-15"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 111.25-15 - Duty cycle."
title_number: 46
title_name: "Shipping"
section_number: "111.25-15"
section_name: "Duty cycle."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "J"
subchapter_name: "ELECTRICAL ENGINEERING"
part_number: "111"
part_name: "ELECTRIC SYSTEMS—GENERAL REQUIREMENTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2. Section 111.05-20 and Subpart 111.106 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905."
regulatory_source: "CGD 74-125A, 47 FR 15236, Apr. 8, 1982, unless otherwise noted."
cfr_part: "111"
---


# 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 ⁄ hr. at full load. |
| Direct acting windlass | One fourth. |
| Windlass with hydraulic transmission | Half hour idle pump operation, followed by ⁄ 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 | ⁄. |
| Boat winches | ⁄. |