United States Navy Repair Technician Collar Device
Criteria: The Repair Technician Collar Device is worn by Navy personnel specializing as Repair Technicians (RT). The following jobs have recently been merged by the Navy into the the larger category of Repair Technician: Damage Controlman (DC), Hull Maintenance Technician (HT), and Machinery Repairman (MR).
Damage Controlmen perform the work necessary for damage control, ship stability, fire-fighting. They also prepare defenses against chemical, biological and radiological (CBR) warfare attacks. They instruct personnel in damage control and CBR defense and repair damage-control equipment and systems.
Hull Maintenance Technicians are responsible for maintaining ships' hulls, fittings, piping systems and machinery. They install and maintain all shipboard and shore based plumbing and piping systems. They look after a vessel's safety and survival equipment and perform many tasks related to damage control.
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.