MIL-B-18381D, MILITARY SPECIFICATION: BOILERS, STEAM, HIGH-PRESSURE, NAVAL SHIP PROPULSION (23-SEP-1975)

MIL-B-18381D, MILITARY SPECIFICATION: BOILERS, STEAM, HIGH-PRESSURE, NAVAL SHIP PROPULSION (23-SEP-1975)., This specification covers oil fired natural circulation water tube boilers, and their appurtenances, for generating steam for propulsion of Naval ships.