Navy MR (Machinery Repairman)Navy Rate (Machinery Repairman) MR, Sometimes referred to as unicorns due to their very small numbers, Machinery Repairman (MR) are trained in the machining of parts and tools. Using machine shop tools such as milling machines, lathes, boring mills, grinders, drill presses and metal cutting tools Machinery Repairmen are the go to Sailors to fabricate and manufacture the parts needed to keep the ship running. These premium t shirts are side seamed and