open submarine warfare

open burning and open detonation (OBOD) (= open-pit)

open country / open ground

anti-submarine warfare (ASW)

anti-submarine warfare cruiser

anti-submarine warfare officer

anti-submarine warfare patrol aircraft

anti-submarine warfare platform

anti-submarine warfare sensor data

anti-submarine warfare ship

submarine warfare

helicopter for anti-submarine warfare

Russian New Generation Warfare (RNGW) (4th Generation Warfare, Hybrid War etc.)

electromagnetic warfare / electronic warfare (EW)

anti-submarine search

anti-submarine ship

attack submarine (SSN)

ballistic missile submarine (SSBN)

coastal submarine

disabled submarine (DISSUB)

distressed submarine (DISSUB)

distressed submarine personnel

guidance submarine

guided missile submarine

HM Submarine

hunter-killer submarine

killer submarine

life guard submarine

mini-submarine

nuclear propulsion submarine

nuclear submarine

nuclear-powered ballistic missile submarine (SSBN)

nuclear-powered submarine