Relevant Military Sea Service Chart

Relevant Military Sea Service Chart


Employment applicants for civil service mariner jobs with Military Sealift Command must have a U.S. Coast Guard issued merchant mariner’s credential. Click here to download both the MMC application and general information packages.

Contact a recruiter for more information.

Military time/sea service can be used to qualify for advanced merchant mariner’s ratings. Download or use the chart below to assess the merchant mariner’s equivalent to your military service:

United States Military Service Possible USCG MMC Endorsement Needed Possible MSC Job
United States Army
Culinary
92 G Culinary E6 & above Entry Entry – OS Wiper SU, Steward Cook, Chief Steward
92 G Culinary E3 to E6 Entry Entry – OS Wiper SU, Assistant Cook, 2nd Cook, Cook Baker, Chief Cook
Medical
18D Medical Entry, Staff Officer Entry – OS Wiper SU, Medical Services Officer
Communications
25 U Signal Corp Entry Entry – OS Wiper SU, Radio Electronics Technician 2
Deck Department
88k Watercraft Operator Entry, AB, 3rd Mate Entry – OS Wiper SU, AB, 3rd Mate
Engine Department
88L Watercraft Engineer Entry, Jr Engineer, QMEDs, 3rd A/E Entry – OS Wiper SU, Jr Engineer, 3rd A/E
Supply Department
92A Logistics, E6 & above Entry Entry – OS Wiper SU, Yeoman Storekeeper, Jr Supply Officer
92A Logistics, E5 Entry Entry – OS Wiper SU, Yeoman Storekeeper
92A Logistics, E4 Entry Entry – OS Wiper SU, Assistant Storekeeper
92A Logistic E3 & below Entry Entry – OS Wiper SU
All other MOS’ Entry Entry – OS Wiper SU
United States Air Force
Medical
Air Force IDMT MOS 4NOX E6 & above Entry, Staff Officer, Certificate of Registry – Hospital Corpsman, Registered Nurse, Physicians Assistant Entry – OS Wiper SU, Medical Services Officer
All other MOS’ Entry Entry – OS Wiper SU
United States Marine Corps
Culinary
3302 Food Service Officer Entry Entry – OS Wiper SU, Steward Cook, Chief Steward, Jr Supply Officer
3381 E6 & above Entry Entry – OS Wiper SU, Steward Cook, Chief Steward
3381 E1 to E5 Entry Entry – OS Wiper SU, Assistant Cook, 2nd Cook, Cook Baker
Supply
E6 & above Entry Entry – OS Wiper SU, Yeoman Storekeeper, Jr Supply Officer
E5 & above Entry Entry – OS Wiper SU, Yeoman Storekeeper
E4 & above Entry Entry – OS Wiper SU, Assistant Storekeeper
E3 & below Entry Entry – OS Wiper SU
All Other MOS’ Entry Entry – OS Wiper SU
United States Coast Guard
Communications
Information Systems Technician (IST) E6 & above Entry Entry – OS Wiper SU, Chief Radio Electronics Technician E6 & above
Information Systems Technician (IST) E5 Entry Entry – OS Wiper SU, 1st Radio Electronic Technician
Information Systems Technician (IST) E4 Entry Entry – OS Wiper SU, 2nd Radio Electronics Technician
Deck
Senior Enlisted Deck Rating, Surface Warfare Officer Entry, AB, Chief Mate, 2nd & 3rd Mate Entry – OS Wiper SU, AB, Chief Mate, 2nd & 3rd Mate, Boatswain
Boatswain Mate (BM) Entry, AB, 2nd & 3rd Mate Entry – OS Wiper SU, AB, 2nd & 3rd Mate, Boatswain
Operation Specialist (OS) Entry, AB Entry – OS Wiper SU, AB, OPS Chief-E5 & above w/10 yr
Engineering
Engineering Officer – Surface Warfare Officer Entry, 1st 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, 1st 2nd & 3rd Assistant Engineer, Deck Engineer Machinist, Unlicensed Junior Engineer, Electrician/Refrigeration Engineer, Engine Utilityman, Pumpman, Damage Control Officer, Assistant Damage Control Officer, Damage Controlman
Machinery Technician E6 & above w/180 days on 220′ ship & larger Entry, 1st 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, 1st 2nd & 3rd Assistant Engineer, Deck Engineer Machinist, Unlicensed Junior Engineer, Electrician/Refrigeration Engineer, Engine Utilityman, Pumpman, Damage Control Officer, Assistant Damage Control Officer, Damage Controlman
Machinery Technician E5 & above w/180 days on 220′ ship & larger Entry, Deck Engineer Machinist, Unlicensed Junior Engineer, Refrigeration Engineer, FWOT Entry – OS Wiper SU, Deck Engineer Machinist, Unlicensed Junior Engineer, Refrigeration Engineer, Engine Utilityman, Pumpman
Medical
Hospital Corpsman (HM) IDC – E6 & above Entry, Staff Officer, Certificate of Registry – Hospital Corpsman, Registered Nurse, Physicians Assistant Entry – OS Wiper SU, Medical Services Officer
Culinary (Food Service Specialist)
E6 & above Entry Entry – OS Wiper SU, Steward Cook, Chief Cook, 2nd Cook, Cook Baker, Assistant Cook
E5 Entry Entry – OS Wiper SU, Chief Cook, 2nd Cook, Cook Baker, Assistant Cook
E4 & above Entry Entry – OS Wiper SU, 2nd Cook, Assistant Cook
E3 & below Entry Entry – OS Wiper SU, Assistant Cook
United States Navy
No Designated Rating
No Rating Entry Entry – OS Wiper SU, Supply Utilityman
No Designated Rating w/Votec Engineering Class Entry Entry – OS Wiper SU, Supply Utilityman, Wiper, Deck Engineer Machinist Apprentice
Deck Department
Senior Enlisted Deck Rating, Surface Warfare Officer Entry, AB, Chief Mate, 2nd & 3rd Mate Entry – OS Wiper SU, AB, Chief Mate, 2nd & 3rd Mate, Boatswain
Boatswain Mate (BM) Entry, AB, 2nd & 3rd Mate Entry – OS Wiper SU, AB, 2nd & 3rd Mate, Boatswain
Operation Specialist (OS) Entry, AB Entry – OS Wiper SU, AB, E5 & above w/10 yr-OPS Chief
Engineer Ratings
Senior Enlisted, Surface Warfare Officer Entry, 1st 2nd & 3rd Assistant Engineer, Damage Control Officer, Assistant Damage Control Officer, Damage Controlman Entry – OS, Wiper SU, 1st 2nd &amp 3rd Mate, Assistant Engineer
Hull Maintenance Technician (HT) Entry, FWOT, Unlicensed Junior Engineer Entry – OS Wiper SU, Engine Utility, Unlicensed Junior Engineer
Damage Controlman (DC) Entry, FWOT, Unlicensed Junior Engineer Entry – OS Wiper SU, Engine Utility, Unlicensed Junior Engineer
Gas Systems Maintenance (GSM) Entry, Junior Engineer, Electrician, 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, Unlicensed Junior Engineer, Electrician, 2nd Electrician, Electronics, 2nd & 3rd Engineer, Assistant Damage Control Officer, Damage Controlman
Electricians Mate (EM) Entry, Junior Engineer, Electrician, Refrigeration Engineer Entry – OS Wiper SU, Unlicensed Junior Engineer, Electrician, 2nd Electrician, Electronics, Refrigeration Engineer
Gas Systems Electric (GSE) Entry, Junior Engineer, Electrician, 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, Unlicensed Junior Engineer, Electrician, 2nd Electrician, Electronics, 2nd & 3rd Engineer, Assistant Damage Control Officer, Damage Controlman
Machinist Mate A Gang (MM) Entry, FWOT, Deck, Machinist, Junior Engineer, Electrician, Refrigeration Engineer, 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, Deck Engineer Machinist, Unlicensed Junior Engineer, Refrigeration Engineer, Engine Utilityman, Pumpman, 2nd & 3rd Assistant Engineer, Assistant Damage Control Officer, Damage Controlman
Machinist Mate Engine (MM) Entry, FWOT, Deck Engineer Machinist, Junior Engineer, 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, Engine Utilityman, Refrigeration Engineer, Deck Engineer Machinist, Pumpman, 2nd & 3rd Assistant Engineer, Assistant Damage Control Officer, Damage Controlman
Boiler Technician (BT) Entry, FWOT, Junior Engineer Entry – OS Wiper SU, Engine Utilityman, Unlicensed Junior Engineer
Machinery Repairman (MR) Entry, FWOT, Junior Engineer, Deck Engineer Machinist, Pumpman, 2nd & 3rd Assistant Engineer Entry – OS Wiper SU, Engine Utilityman, Unlicensed Junior Engineer, Deck Engineer Machinist, Assistant Damage Control Officer, Damage Controlman
Electronics Technician (ET) Entry Entry – OS Wiper SU, Radio Electronics Technician 2
Interior Communications Entry, QMED Entry – OS Wiper SU, Electronics Technician
Culinary
Culinary and Mess Specialist (CS) & (MS) N/A Entry – OS Wiper SU
E6 & above Entry Entry – OS Wiper SU, Steward Cook, Chief Cook, 2nd Cook, Cook Baker, Assistant Cook
E5 Entry Entry – OS Wiper SU, Chief Cook, 2nd Cook, Cook Baker, Assistant Cook
E4 & above Entry Entry – OS Wiper SU, 2nd Cook, Assistant Cook
E3 & below Entry Entry – OS Wiper SU, Assistant Cook
Supply
Logistics Specialist (LS), Storekeeper (SK), Aviation Storekeeper (AK), E5 & above Entry Entry – OS Wiper SU, Supply Officer, Jr Supply Officer, Yeoman Storekeeper, Assistant Storekeeper
Logistics Specialist (LS), Storekeeper (SK), Aviation Storekeeper (AK), E4 & below Entry Entry – OS Wiper SU, Assistant Storekeeper
Medical
Hospital Corpsman (HM) (IDC NEC), E6 & above 8425/8402/8403/8494 Entry, Staff Officer, Certificate of Registry – Hospital Corpsman, Registered Nurse, Physicians Assistant Entry – OS Wiper SU, Medical Services Officer
Electronics
Electronics (ET) Entry Entry – OS Wiper SU, 2nd Radio Electronics Technician
Aviation Electronics (AE) Entry Entry – OS Wiper SU, 2nd Radio Electronics Technician
Communications
Information Systems Technician (IT), E6 & above Entry Entry – OS Wiper SU, Chief Radio Electronics Technician
Information Systems Technician (IT), E5 & above Entry Entry – OS Wiper SU, 1st Radio Electronic Technician
Information Systems Technician (IT), E4 & above Entry Entry – OS Wiper SU, 2nd Radio Electronic Technician