1 definition by MM1 (SS) Harp
a Machinist Mate in the US Navy serving on board a nuclear submarine in the Auxilary Division. He operates and repairs all auxilary mechanical equipment on board the ship, which includes Hydraulic equipment, pnuematic equipment, diesel, AC&R, air regeneration and purifaction, sanitation, potable water, well in sort everything but the main turbines, reactor, and making water. one of the most knowledgeable men on board a submarine.
by MM1 (SS) Harp April 6, 2009