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Aviation Machinist's Mate is the only one of the four that is still in use today, making it the oldest U.S. Naval Aviation Rating still in service. [2] In April, 1948, the rating's abbreviation was changed from AMM to AD, but the insignia has not changed since 1921. [2]
From left to right: the service dress blue rating badge for a special warfare operator first class and a boatswain's mate second class. United States Navy ratings are general enlisted occupations used by the U.S. Navy since the 18th century, which denote the specific skills and abilities of the sailor.
Machinist's Mate (or MM) is a rating in the United States Navy's engineering community. It is non-capitalised as machinist's mate when discussing the generic rating rather than as a proper noun when discussing a specific enlisted seaman (Machinist's Mate Jane Doe, MM John Doe) carrying that rating.
The Navy Enlisted Classification (NEC) system supplements the rating designators for enlisted members of the United States Navy.A naval rating and NEC designator are similar to the Military Occupational Specialty (MOS) designators used in the U.S. Army and U.S. Marine Corps and the Air Force Specialty Code (AFSC) used in the U.S. Air Force and the U.S. Space Force.
A chief's full title is a combination of the two. Thus, a senior chief petty officer with the rating of machinist's mate would properly be called a senior chief machinist's mate, the abbreviation of which is MMCS. Each rating has an official abbreviation, such as MM for machinist's mate, QM for quartermaster, and YN for yeoman.
The AMH was for hydraulic systems (landing gear, brakes, flight controls and all related). The AMS was structural/sheet metal. Today's AM Rating began from the aviation metalsmith used between 1921 and 1948. In 2001, the AMS and AMH Ratings were merged to form the AM Rating, the AME Rating remains a separate and distinct rating.
Machinery repairman (abbreviated as MR) is a United States Navy occupational rating. The Shop Machinist and the Outside Machinist ratings of the Machinist's Mate rating were combined to create the Machinery Repairman rating in 1948. [1]
For example, if someone's rate is Petty Officer 2nd Class and his rating is Boatswain's Mate; when combined, Boatswain's Mate 2nd Class (BM2) defines both. [1] [2] Although rates E-7 above are abbreviated similar to E-4 to E-6, the combined rating is listed before rate when completely spelled out. For instance, Master Chief Electronics ...