46 CFR 10.239: Quick reference table for MMC requirements

Last reviewed: October 14, 2026

This section gives a quick reference table to the requirements for officer endorsements. The table points to other sections for each endorsement. The provisions in the reference section are controlling.

What it says

  1. Table 1 to § 10.239 is only a guide to the requirements for officer endorsements.

    “Table 1 to § 10.239 provides a guide to the requirements for officer endorsements.”

  2. The provisions in the reference section are controlling, not the table.

    “Provisions in the reference section are controlling.”

  3. For tank vessel endorsements, the reader is sent to table 1 to § 13.129.

    46 CFR 10.239 Note 1“For tank vessel endorsements, see table 1 to § 13.129.”

  4. All references within table 1 to this section are within this subchapter.

    46 CFR 10.239 Note 2“All references within table 1 to this section are within this subchapter.”

Common questions

Does the MMC quick reference table control over the referenced sections?

No. The provisions in the reference section are controlling.

“Provisions in the reference section are controlling.”

Where do I find tank vessel endorsement requirements?

The text says to see table 1 to § 13.129 for tank vessel endorsements.

“For tank vessel endorsements, see table 1 to § 13.129.”

Where do the section references in the MMC quick reference table point?

All references within table 1 to this section are within this subchapter.

“All references within table 1 to this section are within this subchapter.”

The text of 46 CFR 10.239

Electronic Code of Federal Regulations (eCFR), current as of April 16, 2026 · Read it on eCFR

Quick reference table for MMC requirements

Table 1 to § 10.239 provides a guide to the requirements for officer endorsements. Provisions in the reference section are controlling.

Note 1 to § 10.239: For tank vessel endorsements, see table 1 to § 13.129.

Note 2 to § 10.239: All references within table 1 to this section are within this subchapter.

Table 1 to § 10.239—Quick Reference Table for MMC Requirements Endorsement category Minimum age Citizenship Medical and physical exam Experience Recommendations and character check Firefighting Professional exam Demonstration of professional ability Recency of service First aid and CPR Master, Mates § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) part 11—subpart D N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h) § 11.201(j); § 11.903; § 11.910 Note: § 11.903(b) N/A original § 11.201(c)(2) renewal § 10.227(e) § 11.201(i) Note: exceptions.

Operator of Uninspected Passenger Vessels (OUPV) § 11.201(e) Note: exceptions here and in § 11.201(l) § 10.221(a)(1) § 11.201(d). § 10.302(a) § 11.467(c); (d); (e); (f); (g) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A §§ 11.201(j); 11.903; § 11.910 N/A original § 11.201(c)(2) renewal § 10.227(e) § 11.201(i): Note exceptions.

STCW deck officer endorsements § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d). § 10.302(a) part 11—subpart C N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.303 Renewal: § 11.303(b) and (c) N/A Master § 11.305; .311; .315; .317 Chief Mate § 11.307; .313 OICNW § 11.309; 11.319; 11.321 original § 11.201 (c)(2) renewal § 10.227(e) § 11.201(i).

Officer on a passenger ship when on an international voyage N/A N/A N/A N/A N/A N/A N/A § 11.1105(a)(1); (2) § 11.1105(c) N/A.

Engineers (original) § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) 10.302(a) part 11—subpart E N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h) § 11.201(j); 11.903; § 11.950 Note: § 11.903(b) N/A original § 11.201(c)(2) renewal § 10.227(e) § 11.201(i).

STCW Engineering Officer endorsements § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) part 11—subpart C N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.303 Renewal: § 11.303(b) and (c) N/A Chief § 11.325; § 11.331 2nd engineer officer; § 11.327; § 11.333 OICEW/DDE § 11.329 original § 11.201 (c)(2) renewal § 10.227(e) § 11.201(i).

National Designated Duty Engineer (DDE) § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d). § 10.302(a) 11.524(b) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h)(1)(iv) § 11.903 N/A original § 11.201(c)(2) renewal § 10.227(e) § 11.201(i).

Electro-technical Officer § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d). § 10.302(a) § 11.335(a)(1) note exception in § 11.335(b) & § 11.33 5(c) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.335(a)(3)(ii) N/A § 11.335(a)(2), (3) note exception in § 11.335(b) & (c) § 11.335(a)(3)(i).

Pilot § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a); § 11.709 § 11.703; § 11.705 N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A § 11.707; § 11.903; § 11.910 § 11.705 § 11.705(e), § 11.713 § 11.201(i).

Towing Vessels § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) part 11—subpart D N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h)(1)(ii) § 11.201(h)(2)(ii) Note: exceptions § 11.201(j); § 11.903; § 11.910 § 11.464; § 11.465 original § 11.201(c)(2) renewal § 10.227(e) § 11.201(i).

Offshore Supply Vessels (OSV) § 11.201(e) Note: exceptions.

U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) Master § 11.493 Chief Mate § 11.495 Mate § 11.497 C/E § 11.553 Engineer § 11.555 N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h) § 11.201(j); Master § 11.493 Chief Mate § 11.495 Mate § 11.497 C/E § 11.553; § 11.903 Eng § 11.555; § 11.903 Master § 11.493 Chief Mate § 11.495 Mate § 11.497 C/E § 11.553 Engineer § 11.555 original § 11.201(c)(2) renewal § 10.227(e). § 11.201(i).

MODU § 11.201(e); Note: exceptions U.S., § 10.221(a)(1); § 11.201(d) § 10.302(a) OIM: § 11.470; B.S.: § 11.472; BCO: § 11.474; ChEng: § 11.542; Asst.

Eng: § 11.544 N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h): note exceptions § 11.201(j); § 11.903; § 11.920 N/A original § 11.201

(c)(2); renewal § 10.227(e) § 11.201(i).

Uninspected Fishing Industry Vessels § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) Deck: § 11.462(c); (d); Engine: § 11.530(c); (d); (e) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements § 11.201(h) Note: exceptions § 11.201(j); § 11.903; § 11.910 N/A original § 11.201(c)(2) renewal § 10.227(e). § 11.201(i).

Radio Officer § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) N/A N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A N/A § 11.603 N/A § 11.201(i).

GMDSS Operator N/A N/A N/A N/A N/A N/A N/A 11.604 N/A N/A.

Officer raises of grade § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) § 10.231(c); part 11, subparts D and E N/A N/A § 10.231(d); § 11.903; § 11.910; § 11.920; § 11.950 part 11, subparts D and E 3 months in past 3 years, § 11.201 (c)(2) N/A.

Officer renewals § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d) § 10.302(a) § 10.227(d) and (e) Note: exceptions N/A N/A N/A Towing officers, § 10.227(d) and (e) 1 year in past 5, § 10.227(e) and (f) Note: alternative.

N/A.

Staff officer § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d). § 10.302(a) § 11.807 N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A N/A § 11.807 N/A § 11.201(i).

Staff officer renewals § 11.201(e) Note: exceptions U.S., § 10.221(a)(1) § 11.201(d). § 10.302(a) N/A N/A N/A N/A N/A N/A N/A.

Able Seafarer § 12.401(c)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a), § 12.401(c)(2) § 12.403 N/A N/A § 12.401(c)(5) § 12.401(c)(6) § 12.405 Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Able Seafarer-Deck § 12.603(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.603(a)(3) N/A N/A N/A § 12.603(a)(2) § 12.603(a)(4) § 12.603(a)(5) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative § 12.602(a).

Ratings Forming Part of a Navigational Watch (RFPNW) § 12.605(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.605(a)(2) N/A N/A N/A § 12.605(a)(3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative § 12.602(a).

Qualified Members of Engine Department (QMED) § 12.501(c)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.503 N/A N/A § 12.505 N/A Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Able Seafarer-Engine § 12.607(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.607(a)(3) N/A N/A N/A § 12.607(a)(2); (4) § 12.607(b); (c) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative § 12.602(a).

Ratings Forming Part of an Engineering Watch (RFPEW) § 12.609(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.609(a)(2) N/A N/A N/A § 12.609(a)(3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative § 12.602(a).

Electro-technical Rating § 12.611(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.611(a)(2) N/A N/A N/A § 12.611(a)(3); § 12.611(b) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative § 12.602(a).

Entry level ratings N/A U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 12.803; § 12.809 N/A; note exception in § 12.811(a)(2) Note: Food Handler (F.H.) requirements in table § 10.302(a)

(xiii) § 10.302(a) (xiv) N/A N/A N/A N/A N/A N/A N/A.

Lifeboat Operator N/A U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.407(b)(1) N/A N/A § 12.407(b)(2); (4) § 12.407(b)(2); (3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Lifeboat Operator-Limited N/A U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 10.302(a) § 12.409(b)(1) N/A N/A § 12.409(b)(2); (4) § 12.409(b)(2); (3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Proficiency in Fast Rescue Boats § 12.617(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) N/A N/A N/A N/A N/A § 12.617(a)(2); (3); (4) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative Renewal § 12.617(b)(2) § 12.602(a).

Proficiency in Survival Craft and Rescue Boats other than Fast Rescue Boats § 12.613(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) N/A § 12.613(a)(2) N/A N/A N/A § 12.613(a)(3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative Renewal: § 12.613(b)(2) § 12.602(a).

Proficiency in Survival Craft and Rescue Boats other than Lifeboats and Fast Rescue Boats-Limited § 12.615(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) N/A § 12.615(a)(2) N/A N/A N/A § 12.615(a)(3) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative.

Renewal: § 12.615(b)(2) § 12.602(a).

Assistance Towing endorsement N/A N/A N/A § 11.482 N/A N/A § 11.482 § 11.482 original § 11.201(c)(2) N/A.

Radar Observer endorsement N/A N/A N/A N/A N/A N/A N/A § 11.480(d); (h) N/A N/A.

Vessel Security Officer (VSO) § 11.337(a) U.S. or alien admitted for permanent residence, § 10.221(a)(1) § 10.221(a)(2) § 10.302(a) § 11.337(a) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A N/A § 11.337(a) original § 11.201(c)(2) renewal § 10.227(e). § 11.201(i).

High Speed Craft N/A U.S. § 10.221(a)(1) N/A § 11.821(b)(1) § 11.821(c) N/A: Note exceptions in § 11.201(g) for original national or STCW endorsements N/A N/A § 11.821(b)(2) Renewal: § 11.821(e) N/A.

GMDSS at-Sea Maintainer § 12.623(a) N/A N/A N/A N/A N/A N/A § 12.623(b) N/A N/A.

Medical First-aid Provider N/A N/A N/A § 12.619(b) N/A N/A N/A § 12.619(a)(1); (2) N/A § 12.619(a)(1).

Person in Charge of Medical Care N/A N/A N/A § 12.621(b) N/A N/A N/A § 12.621(a)(1); (2) N/A § 12.621(a)(1).

Vessel Personnel with Designated Security Duties § 12.625(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 12.803 § 12.625(a)(2) § 12.625(a)(1) N/A N/A N/A § 12.625(a)(1) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Security Awareness § 12.627(a)(1) U.S. or alien admitted for permanent residence, § 10.221(a)(2) § 12.803 § 12.627(a)(2) § 12.627(a)(1) N/A N/A N/A § 12.627(a)(1) Renewal only, 1 year in past 5, § 10.227(e) and (f) Note: alternative N/A.

Ratings serving on passenger ships on international voyages N/A N/A N/A N/A N/A N/A N/A § 12.905(a); (b) Renewal § 12.905(d) N/A.

Sections it refers to

The plain-English explanation on this page was written with AI from the regulation text above and checked automatically before publishing: every quote appears in the text, every number comes from it, and a second model confirmed each statement adds nothing the text doesn't say. Regulation text current as of April 16, 2026. The regulation text governs. RegKnot is not affiliated with the U.S. Coast Guard.