Machinery Repairman	MR
	Machinery Repairmen are skilled machine tool operators. They make replacement parts and repair or overhaul a ship's engine auxiliary equipment, such as evaporators, air compressors and pumps. They repair deck equipment, including winches, hoists, condensers and Heat exchange devices. Shipboard Machinery Repairmen frequently operate main propulsion machinery, besides performing machine shop and repair duties.

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The duties performed by MRs include:

• repairing and operating auxiliary machinery;
• calculating time and material needed for machine shop work and the repairing of auxiliary machinery;
• drawing sketches and preparing specifications for replacement parts;
• working from sketches and specifications to produce replacement parts;
• operating machine shop equipment, such as lathes, drill presses, shapers, bench grinders, milling machines, boring mills, power hacksaws and computer numerically controlled machinery;
• working with precision measuring instruments such as micrometers, depth gauges, verniers, calipers, gauge blocks, protractors and dial indicators;
• engraving metal and other materials;
• performing electroplating and flame spraying operations.

Working Environment

People in the MR rating usually work indoors in a machine shop situation where many motor-powered machine tools are present. They work closely with others and are closely supervised.

Qualifications and Interests

An orientation toward tools, equipment, and machinery is a very important qualification for this rating. Manual dexterity, the ability to do detailed work and repetitive tasks, arithmetic skills, resourcefulness and a good memory are also important. Other helpful attributes are good communication skills and an ability to work with others. Curiosity, record keeping talent and physical strength are also required. Normal hearing is required.

MR - Machinery Repair Maintainer

Machinery Repair Maintainers are skilled machine tool operators. They make replacement parts and repair or overhaul ship's engines and auxiliary systems. They also work on deck equipment including winches and hoists, condensers and heat exchange devices; occasionally operate main propulsion and auxiliary machinery in addition to performing machine shop and repair duties; repairing and operating auxiliary machinery; calculating time and material needed for machine shop work and the repairing of auxiliary machinery; drawing sketches and preparing specifications for replacement parts; working from sketches and specifications to produce replacement parts; operating machine shop equipment, such as lathes, drill presses, shapers, bench grinders, milling machines, boring mills, power hacksaws and computer numerically controlled machinery; working with precision measuring instruments such as micrometers, depth gauges, verniers, calipers, gauge blocks, protractors and dial indicators; engraving metal and other materials; performing electroplating and flame spraying operations. These maintainers work under the supervision of a mentor while learning a trade or skill.

MR - Machinery Repair Technician

Machinery Repair Technicians are skilled machine tool operators. They make replacement parts and repair or overhaul ship's engines and auxiliary systems. They also work on deck equipment including winches and hoists, condensers and heat exchange devices; occasionally operate main propulsion and auxiliary machinery in addition to performing machine shop and repair duties; repairing and operating auxiliary machinery; calculating time and material needed for machine shop work and the repairing of auxiliary machinery; drawing sketches and preparing specifications for replacement parts; working from sketches and specifications to produce replacement parts; operating machine shop equipment, such as lathes, drill presses, shapers, bench grinders, milling machines, boring mills, power hacksaws and computer numerically controlled machinery; working with precision measuring instruments such as micrometers, depth gauges, verniers, calipers, gauge blocks, protractors and dial indicators; engraving metal and other materials; performing electroplating and flame spraying operations. These maintainers are expected to perform work independently and mentor Machinery Repair Maintainer(s) with very limited supervision.

101029-N-5620H-026 APRA HARBOR, Guam (Oct. 29, 2010) Machinery Repairman Fireman Caleb Malek, assigned to the submarine tender USS Frank Cable (AS 40), manufactures a part on a lathe for the Los Angeles-class attack submarine USS City of Corpus Christi (SSN-705). Cable finished a Military Sealift Command (MSC) integration and is underway for sea trials. (U.S. Navy photo by Mass Communication Specialist Seaman Corey Hensley/Released)

110118-N-7456N-245 SAN DIEGO (Jan. 18, 2011) Machinery Repairman 2nd Class Nathaniel Spencer helps the son of a fellow crewmember operate a fire hose during a live hose demonstration aboard the guided-missile destroyer USS Higgins (DDG 76). Family and friends joined the crew for a day underway aboard Higgins before the ship prepares to depart for a six-month independent deployment to the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua R. Nistas/Released)

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