{"data":{"id":"us/46-cfr-10.239","jurisdiction":"us","citation":"46 CFR 10.239","heading":"Quick reference table for MMC requirements.","body":"Table 1 to § 10.239 provides a guide to the requirements for officer endorsements. Provisions in the reference section are controlling.\nNote 1 to § 10.239:\nFor tank vessel endorsements, see table 1 to § 13.129.\nNote 2 to § 10.239:\nAll references within table 1 to this section are within this subchapter.\nTable 1 to § 10.239—Quick Reference Table for MMC Requirements\nEndorsement 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\nMaster, 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.\nOperator 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.\nSTCW 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).\nOfficer 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.\nEngineers (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).\nSTCW 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).\nNational 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).\nElectro-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) \u0026 § 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) \u0026 (c) § 11.335(a)(3)(i).\nPilot § 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).\nTowing 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).\nOffshore 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).\nMODU § 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).\nUninspected 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).\nRadio 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).\nGMDSS Operator N/A N/A N/A N/A N/A N/A N/A 11.604 N/A N/A.\nOfficer 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.\nOfficer 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.\nStaff 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).\nStaff 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.\nAble 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.\nAble 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).\nRatings 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).\nQualified 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.\nAble 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).\nRatings 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).\nElectro-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).\nEntry 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.\nLifeboat 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.\nLifeboat 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.\nProficiency 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).\nProficiency 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).\nProficiency 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).\nAssistance 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.\nRadar Observer endorsement N/A N/A N/A N/A N/A N/A N/A § 11.480(d); (h) N/A N/A.\nVessel 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).\nHigh 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.\nGMDSS 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.\nMedical 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).\nPerson 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).\nVessel 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.\nSecurity 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.\nRatings 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.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER B—MERCHANT MARINE OFFICERS AND SEAMEN","PART 10—MERCHANT MARINER CREDENTIAL","Subpart B—General Requirements for All Merchant Mariner Credentials"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"31c0c344bcf7fb5b9423fddd48d45650c07567735d0380ab67d32e9057c0179c","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-10.237","next":"us/46-cfr-10.301"},"notice":"GroundRules: Original legal text. Not legal advice."}