---
kind: "section"
citation: "46 C.F.R. § 10.109"
title: "46"
number: "10.109"
heading: "Classification of endorsements."
url: "https://uscodex.org/cfr/46/10.109"
---

# §10.109. Classification of endorsements.

- (a) **National officer endorsements.** The following national officer endorsements are established in [part 11](/cfr/46/part11.md) of this subchapter. The endorsements indicate that an individual holding a valid MMC with this endorsement is qualified to serve in that capacity and the endorsement has been issued under the requirements contained in [part 11](/cfr/46/part11.md) of this subchapter:
  - (1) **Master.**
  - (2) **Chief Mate.**
  - (3) **Second Mate.**
  - (4) **Third Mate.**
  - (5) **Mate.**
  - (6) **Master of Towing Vessels.**
  - (7) **Master of Towing Vessels-Limited.**
  - (8) **Mate (Pilot) of Towing Vessels.**
  - (9) **Apprentice Mate of Towing Vessels.**
  - (10) **Apprentice Mate of Towing Vessels-Limited.**
  - (11) **Assistance Towing.**
  - (12) **Offshore Installation Manager (OIM).**
  - (13) **Barge Supervisor (BS).**
  - (14) **Ballast Control Operator (BCO).**
  - (15) **Operator of Uninspected Passenger Vessels (OUPV).**
  - (16) **Master of Uninspected Fishing Industry Vessels.**
  - (17) **Mate of Uninspected Fishing Industry Vessels.**
  - (18) **Master-OSV.**
  - (19) **Chief Mate-OSV.**
  - (20) **Mate-OSV.**
  - (21) **Chief Engineer.**
  - (22) **Chief Engineer-Limited.**
  - (23) **First Assistant Engineer.**
  - (24) **Second Assistant Engineer.**
  - (25) **Third Assistant Engineer.**
  - (26) **Assistant Engineer-Limited.**
  - (27) **Designated Duty Engineer (DDE).**
  - (28) **Chief Engineer-OSV.**
  - (29) **Assistant Engineer-OSV.**
  - (30) **Chief Engineer-MODU.**
  - (31) **Assistant Engineer-MODU.**
  - (32) **Chief Engineer Uninspected Fishing Industry Vessels.**
  - (33) **Assistant Engineer Uninspected Fishing Industry Vessels.**
  - (34) **Radio Officer.**
  - (35) **First-Class Pilot.**
  - (36) **Chief Purser.**
  - (37) **Purser.**
  - (38) **Senior Assistant Purser.**
  - (39) **Junior Assistant Purser.**
  - (40) **Medical Doctor.**
  - (41) **Professional Nurse.**
  - (42) **Marine Physician Assistant.**
  - (43) **Medical Technician.**
  - (44) **High-Speed Craft Type Rating (HSC).**
  - (45) **Radar Observer.**
- (b) **National rating endorsements.** The following national rating endorsements are established in [part 12](/cfr/46/part12.md) of this subchapter. The endorsements indicate that an individual holding a valid MMC with this endorsement is qualified to serve in that capacity and the endorsement has been issued under the requirements contained in [part 12](/cfr/46/part12.md) of this subchapter:
  - (1) **Able Seafarer—**
    - (i) Unlimited;
    - (ii) Limited;
    - (iii) Special;
    - (iv) Offshore Supply Vessel (OSV);
    - (v) Sail; and
    - (vi) **Fishing Industry.**
  - (2) **Ordinary Seafarer.**
  - (3) **Qualified Member of the Engine Department (QMED), including the following specialty endorsements—**
    - (i) Oiler;
    - (ii) Boiler Technician;
    - (iii) Junior Engineer;
    - (iv) Pump Technician/Machinist; and
    - (v) **Electrician/Refrigerating Engineer.**
  - (4) **Lifeboat Operator.**
  - (5) **Lifeboat Operator-Limited.**
  - (6) **Wiper.**
  - (7) **Steward's Department.**
  - (8) Steward's Department Food Handler (F.H.).
  - (9) **Cadet (Deck or Engine).**
  - (10) **Student Observer.**
  - (11) **Apprentice Engineer.**
  - (12) **Apprentice Mate.**
- (c) **Tank Vessel Endorsements.** The following ratings are established in [part 13](/cfr/46/part13.md) of this subchapter. The national endorsements indicate that an individual holding a valid MMC with this endorsement is qualified to serve in that capacity and the endorsement has been issued under the requirements contained in [part 13](/cfr/46/part13.md) of this subchapter:
  - (1) **Tank Vessel-PIC.**
  - (2) **Tank Barge-PIC.**
  - (3) **Restricted Tank Vessel-PIC.**
  - (4) **Restricted Tank Barge-PIC.**
  - (5) **Tank Vessel-Assistant.**
  - (6) **Tank Vessel-Engineer.**
- (d) **STCW endorsements.** The following STCW endorsements are issued according to the STCW Convention, the STCW Code, and parts [11](/cfr/46/part11.md), [12](/cfr/46/part12.md), and 13 of this subchapter. The endorsements indicate that an individual holding a valid MMC with this endorsement is qualified to serve in that capacity and the endorsement has been issued under the requirements contained in parts [11](/cfr/46/part11.md), [12](/cfr/46/part12.md) or 13 of this subchapter as well as the STCW Convention and STCW Code (incorporated by reference, see [§ 10.103](/cfr/46/10.103.md)):
  - (1) **Master.**
  - (2) **Chief Mate.**
  - (3) **Officer in Charge of a Navigational Watch (OICNW).**
  - (4) **Chief Engineer Officer.**
  - (5) **Second Engineer Officer.**
  - (6) Officer In Charge of an Engineering Watch in a manned engineroom or Designated Duty Engineer in a periodically unmanned engineroom (OICEW).
  - (7) **Electro-technical Officer (ETO).**
  - (8) **Rating Forming Part of a Navigational Watch (RFPNW).**
  - (9) **Able Seafarer-Deck.**
  - (10) Rating Forming Part of an Engineering Watch in a manned engineroom or designated to perform duties in a periodically unmanned engineroom (RFPEW).
  - (11) **Able Seafarer-Engine.**
  - (12) **Electro-technical Rating (ETR).**
  - (13) **Basic Training (BT).**
  - (14) **Advanced Firefighting.**
  - (15) **Proficiency in Survival Craft and Rescue Boats other than Fast Rescue Boats (PSC).**
  - (16) **Proficiency in Survival Craft and Rescue Boats other than Fast Rescue Boats-Limited (PSC-Limited).**
  - (17) **Proficiency in Fast Rescue Boats.**
  - (18) **Person in Charge of Medical Care.**
  - (19) **Medical First-aid Provider.**
  - (20) **GMDSS At-sea Maintainer.**
  - (21) **GMDSS Operator.**
  - (22) **Advanced Oil Tanker Cargo Operation.**
  - (23) **Advanced Chemical Tanker Cargo Operation.**
  - (24) **Advanced Liquefied Gas Tanker Cargo Operation.**
  - (25) **Basic Oil and Chemical Tanker Cargo Operation.**
  - (26) **Basic Liquefied Gas Tanker Cargo Operation.**
  - (27) **Vessel Security Officer (VSO).**
  - (28) **Vessel Personnel with Designated Security Duties.**
  - (29) **Security Awareness.**
  - (30) **High-Speed Craft Type Rating (HSC).**

## Notes

### Amendments

[USCG-2021-0097, 89 FR 93059, Nov. 25, 2024]

### Authority

Authority: 14 U.S.C. 503; 31 U.S.C. 9701; 46 U.S.C. 2101, 2103, 2104, 2110; 46 U.S.C. chapter 71; 46 U.S.C. chapter 73; 46 U.S.C. chapter 75; 46 U.S.C. 7701, 8903, 8904, and 70105; Executive Order 10173; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: USCG-2006-24371, 74 FR 11216, Mar. 16, 2009, unless otherwise noted.

### Amendments

[USCG-2021-0097, 89 FR 93059, Nov. 25, 2024]
