The

United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...

and

United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...

occupational rating of gunner's mate (GM) is a designation given by the Bureau of Naval Personnel (BUPERS) to enlisted sailors who either satisfactorily complete initial Gunner's Mate "A" school training, or who "strike" for the rating by showing competence in the field of ordnance. When "striking" one is not required to be a seaman, but must belong to one of three undesignated rates: Fireman (FN), Seaman (SN), or Airman (AN). (Striking is no longer authorized in the USCG) It is also possible to cross rate to Gunner's Mate. Cross rating refers to the act of an enlisted sailor "crossing" from their current rating to another rating of their choice, provided their ASVAB scores are high enough and there are open slots for the rate. The Gunner's Mate "A" school is held at Naval Training Center Great Lakes, Illinois and Yorktown, VA for the USCG. In its early years, the school was very hands-on, but it is now primarily conducted through technical educational tools, such as self-study computer-based training (CBT). Training focuses on the operation, maintenance, and troubleshooting of naval guns, missile launchers and torpedoes as well as a strong emphasis on basic

explosive An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An ex ...

s, guidance and tracking systems, small arms, Naval ammunition classification, and safety. Upon completion of this basic training, enlisted members often continue on to a specialized "C" school, where they learn a particular weapons system. A GM will specialize in a multitude of weapons varieties; arms such as,

shotguns A shotgun (also known as a scattergun, peppergun, or historically as a fowling piece) is a long gun, long-barreled firearm designed to shoot a straight-walled cartridge (firearms), cartridge known as a shotshell, which discharges numerous small ...

, semiautomatic and automatic

rifle A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...

pistol A pistol is a type of handgun, characterised by a gun barrel, barrel with an integral chamber (firearms), chamber. The word "pistol" derives from the Middle French ''pistolet'' (), meaning a small gun or knife, and first appeared in the Englis ...

submachine guns A submachine gun (SMG) is a magazine-fed automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an automa ...

, machine guns,

s, both portable and large-scale, mounted weapons systems, and various

rocket A rocket (from , and so named for its shape) is a vehicle that uses jet propulsion to accelerate without using any surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely ...

torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...

es, and

missile A missile is an airborne ranged weapon capable of self-propelled flight aided usually by a propellant, jet engine or rocket motor. Historically, 'missile' referred to any projectile that is thrown, shot or propelled towards a target; this ...

s. A GM may care for and assist in operating

shooting ranges A shooting range, firing range, gun range or shooting ground is a specialized facility, sports venue, venue, or playing field, field designed specifically for firearm usage qualifications, training, practice, or shooting sport, competitions. ...

, armories, and the storage and maintenance of

arms Arms or ARMS may refer to: *Arm or arms, the upper limbs of the body Arm, Arms, or ARMS may also refer to: People * Ida A. T. Arms (1856–1931), American missionary-educator, temperance leader Coat of arms or weapons *Armaments or weapons **Fi ...

. On February 26, 2007, the

Chief of Naval Operations The chief of naval operations (CNO) is the highest-ranking officer of the United States Navy. The position is a statutory office () held by an Admiral (United States), admiral who is a military adviser and deputy to the United States Secretary ...

approved the merger of the gunner's mate (GM) and torpedoman's mate (TM) ratings into the GM rating. The move was made to leverage the strengths, knowledge, skills and abilities found in the two ratings to meet existing and future strategic mission needs. “The training sailors receive after basic training for their ratings on an apprentice level has been the same for both gunner's and torpedomen's mates,” said Senior Chief Torpedoman's Mate, Sherry Secrease of the Navy Personnel Command. “This makes the merger easier to accomplish.”Torpedoman's Mate and Gunner's Mate Ratings Merge
at navy.mil. The Gunner's Mate rating is primarily for surface warfare. Closely associated Naval occupational ratings are Fire Controlman (FC), Aviation Ordnanceman (AO), Missile Technician (MT), Mineman (MN). The Gunner's Mate rating is authorized by the Naval Armament Act of 1794. The others include Boatswain's Mate (BM), Quartermasters (QM), Master-at-Arms (MA), and

Yeoman Yeoman is a noun originally referring either to one who owns and cultivates land or to the middle ranks of Serfdom, servants in an Peerage of England, English royal or noble household. The term was first documented in Kingdom of England, mid-1 ...

(YN). The rating is also among the top five source ratings for enlisted Naval Special Warfare candidates.

Notes

External links

GM from Navy Personnel Command (NPC): Bureau of Naval Personnel (BUPERS)

{{Webarchive, url=https://web.archive.org/web/20080424082319/http://www.bluejacket.com/usn_ratings_emergency.html , date=2008-04-24
CNRC (Navy Recruiting Command) Fact Sheet for the GM rating
United States Navy ratings