46 CFR § 15.915 - Engineer officer endorsements.

---
identifier: "/us/cfr/t46/s15.915"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 15.915 - Engineer officer endorsements."
title_number: 46
title_name: "Shipping"
section_number: "15.915"
section_name: "Engineer officer endorsements."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "B"
subchapter_name: "MERCHANT MARINE OFFICERS AND SEAMEN"
part_number: "15"
part_name: "MANNING 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. 2101, 2103, 3306, 3703, 8101, 8102, 8103, 8104, 8105, 8301, 8304, 8502, 8503, 8701, 8702, 8901, 8902, 8903, 8904, 8905(b), 8906 and 9102; sec. 617, Pub. L. 111-281, 124 Stat. 2905; and DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGD 81-059, 52 FR 38652, Oct. 16, 1987, as amended by USCG-2021-0097, 89 FR 93118, Nov. 25, 2024, unless otherwise noted."
cfr_part: "15"
---


# 15.915 Engineer officer endorsements.

The following MMC officer endorsements authorize the holder to serve as noted, within any restrictions on the MMC, and as provided by § 15.401:

(a) A Designated Duty Engineer (DDE) endorsement authorizes service as Chief or Assistant Engineer on vessels of less than 500 GT in the following manners:

(1) A DDE limited to vessels of less than 1,000 horsepower or less than 4,000 horsepower may serve only on near-coastal, Great Lakes, or inland waters.

(2) A DDE with no horsepower limitations may serve on any waters.

(3) When serving on a vessel to which STCW applies, the appropriate STCW endorsement must also be held.

(b) A Chief Engineer-Limited endorsement authorizes service as Chief or Assistant Engineer on vessels of any gross tons on inland waters and of less than 1,600 GRT on ocean, near-coastal, or Great Lakes waters.

(c) An Assistant Engineer-Limited endorsement authorizes service on vessels of any gross tons on inland waters and of less than 1,600 GRT on ocean, near-coastal, or Great Lakes waters.

[USCG-2004-17914, 78 FR 78010, Dec. 24, 2013, as amended by USCG-2021-0834, 89 FR 102340, Dec. 17, 2024]