{"data":{"id":"us/46-cfr-12.505","jurisdiction":"us","citation":"46 CFR 12.505","heading":"Examination requirements.","body":"(a) Before an applicant is issued an endorsement as QMED in the rating of Oiler, Boiler Technician/Watertender, Junior Engineer, Pump Technician/Machinist, or Electrician/Refrigerating Engineer, they must prove, to the satisfaction of the Coast Guard, by oral or other means of examination, their knowledge of the subjects listed in paragraph (c) of this section.\n(b) The examination, whether administered orally or by other means, must be conducted only in the English language.\n(c) Table 1 to § 12.505(c) provides a list of subjects required.\nTable 1 to § 12.505(c)—Examination Subjects for QMED Ratings\nSubjects Pump technician/ machinist Boiler technician/ watertender Oiler Electrician/ refrigerating engineer Junior engineer\nGeneral subjects:\nAuxiliary machinery X X X X X\nBasic safety procedures X X X X X\nBearings X X X X\nCare of equipment and machine parts X X X X X\nDeck machinery X X X\nDrawings and tables X X X\nHeat exchangers X X X X X\nHydraulic principles X X X\nInstrumentation principles X X X X X\nLubrication principles X X X X\nMaintenance procedures X X X X X\nMeasuring instruments X X X X X\nPipes, fittings, and valves X X X X X\nPollution prevention X X X X X\nProperties of fuel X X X\nPumps, fans, and blowers X X X\nRefrigeration principles X X X\nRemote control equipment X X X X X\nUse of hand/power tools X X X X X\nWatch duties X X X\nElectrical subjects:\nA/C circuits X X\nBatteries X X\nCalculations X X\nCommunication devices X X\nD/C circuits X X\nDistribution systems X X\nElectronic principles X X\nGeneration equipment X X X\nMaintenance X X X\nMeasuring devices X X\nMotor controllers X X\nMotors X X X\nSafety X X X X X\nTroubleshooting X\nSafety and environmental protection subjects:\nCommunications X X X X X\nDamage control X X X X X\nElementary first aid X X X X X\nEmergency equipment X X X X X\nEnvironmental awareness X X X X X\nFire prevention X X X X X\nFirefighting equipment X X X X X\nFirefighting principles X X X X X\nGeneral safety X X X X X\nHazardous materials X X X X X\nShipboard equipment and systems subjects:\nAir conditioning X X\nBallast X X X X\nBilge X X X X\nCompressed air X X X X X\nDesalination X X\nFuel oil storage/transfer X X X\nFuel treatment X X X\nHeating/ventilation X X X\nLubrication X X X X\nPotable water X X\nRefrigeration X X X\nSanitary/sewage X X\nSteering X X X\nSteam propulsion subjects:\nAuxiliary turbines X X X\nBoiler fundamentals X X X\nCombustion principles X X X\nCondensate systems X X X\nDrive systems X X X\nFeedwater systems X X X\nFuel service systems X X X\nMaintenance X X X X\nSafety X X X X X\nSteam fundamentals X X X X\nTurbine fundamentals X X X\nMotor propulsion subjects:\nAir-charge systems X X\nCooling water systems X X\nDiesel engine principles X X X\nDrive systems X X X\nFuel service systems X X\nIntake/exhaust X X\nLubrication systems X X X\nStarting systems X X\nWaste heat/auxiliary boiler X X","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER B—MERCHANT MARINE OFFICERS AND SEAMEN","PART 12—REQUIREMENTS FOR RATING ENDORSEMENTS","Subpart E—Requirements for National Engineer Rating Endorsements"],"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":"5073000b4669096e522f856302bd2cdf6574e7d55a3ef385b93e9483ebda185a","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-12.503","next":"us/46-cfr-12.601"},"notice":"GroundRules: Original legal text. Not legal advice."}