MIL-D-2759D, MILITARY SPECIFICATION: DEAD RECKONING TRACER (DRT) (NAVAL SHIPBOARD) (18-OCT-1963)

MIL-D-2759D, MILITARY SPECIFICATION: DEAD RECKONING TRACER (DRT) (NAVAL SHIPBOARD) (18-OCT-1963)., This specification covers the design of Dead Reckoning Tracer (DRT) for use in Naval ships