asdic, breather, conning tower, echo sounder, escape hatch, periscope, schnorchel, schnorkel, snorkel, snorkel breather, sonar

warship, frigate, aircraft carrier, antisubmarine, battleship, naval, minelayer, navy, ships, vessel, destroyer escort, destroyer, subs, torpedoes, shipyard, submariner, corvette, guided missile frigate, trawler, minisub, submersible, scorpene, minesweeping, freighter, gunboat, conning tower, bathyscaphe, drydock, dry dock, squalus, oliver hazard perry, icebreaker, tugboat, boat, rickover, eniwetok, squadron, schooner, dredger, deckhouse, homeporting, hull, troopship, sailors, nuclear submarine, cargo ships, bathyscaph, maritime, aircraft, airship, admiral, motor vessel, ocean liner, propellor, undersea, foremast, guided missile destroyer, cruise ship, scapa flow, sloop, shipboard, amphibious landing, fishing boat, dockyard, whaling ship, underwater, yacht, dirigible, wardroom, shipbuilder, hydrofoil, frogman, gunnery, ballistic missile, cargo ship, aquanaut, whaler, catamaran, periscope, homeport, workboat, yawl, windjammer, semisubmersible, flattops, reactor, tramp steamer, trireme, cruise liner, fireboat, cruise missile, spacecraft, shipmates, merchantmen, amphibious assault, remus, whaleboat, propulsion, sailboat, sailer, naval shipyard, sonobuoy, submarines, aeroplane, cruiser, aeroplanes, steamship, ship, airplanes, helicopter, rocket, tanker, airplane, locomotive, steamer, expeditionary, military, torpedo, underseas, missile, subaerial, tary, amphibious, buccaneering, haganah, , guerrilla, insurgent, mechanised, mechanized

attack submarine, auxiliary research submarine, fleet ballistic missile submarine, nautilus, nuclear-powered submarine

asdic, attack submarine, auxiliary research submarine, breather, bushnell, conning tower, crash dive, david bushnell, depth bomb, depth charge, echo sounder, father of the submarine, fleet ballistic missile submarine, nautilus, naval underwater warfare center, nuclear-powered submarine, nuclear propulsion, nuclear submarine, nuwc, schnorchel, schnorkel, snorkel, snorkel breather, sonar, submariner, submarine torpedo

sandwich

bomber, cuban sandwich, grinder, hero, hero sandwich, hoagie, hoagy, italian sandwich, pigboat, poor boy, sub, submarine sandwich, subsurface, u-boat, wedge, zep