Related by context. Frequent words. (Click for all words.) 56 unmanned submarines 56 submersible 56 Odyssey Explorer 54 REMUS 53 Polarstern 53 German battleship Bismarck 53 oceanographic survey 53 HMS Vanguard 53 AUVs 52 underwater robot 52 submersibles 51 Le Ponant 51 Emeraude 51 Senopati Nusantara 50 Dumai Express 50 robotic submarine 49 rigid hull inflatable 49 sQuba 49 Dornier aircraft 49 MARSIS 49 MSC Melody 49 submersible robot 49 NASA rovers 48 autonomous underwater 48 vessel 48 pressurized module 48 torpedo tubes 48 multibeam 48 rigid inflatable boat 48 Nivose 48 robotic rovers 48 Oyang 48 Undersea robots 48 submersible robots 48 ship Ile 48 Priz 48 Japanese Kibo laboratory 47 inboard engines 47 Pulkovo Airlines 47 sunken ferry 47 Galileo spacecraft 47 sunken warship 47 Remora 47 Al Salaam Boccaccio 47 Dygalo 47 Balilo 47 HMS Endurance 47 naval frigate 47 Mercury MerCruiser sterndrives 47 coastguard vessels 47 Galileo satellites 47 hydrographic survey 47 crewmen aboard 47 IODP 47 naval destroyers 46 Nordkapp 46 HMS Astute 46 minesweeping 46 INS Mysore 46 fishing trawler 46 HMS Bulwark 46 coastguard helicopter 46 Salalah Oman 46 Somali pirates seize 46 HMCS Athabaskan 46 polar orbits 46 Punta Arenas Chile 46 unmanned underwater 46 robotic rover 46 upturned hull 46 vessels 46 asteroid Itokawa 46 Nereus 46 HMS Tireless 46 Celebes Sea 46 submarine 46 robotic submarines 46 navy frigate 46 Opportunity rovers 46 Twin Otter plane 45 USS Halyburton 45 STX Finland 45 Jan De Nul 45 ship hull 45 Armenian airline Armavia 45 liferafts 45 conning tower 45 sunken vessel 45 twin rover Opportunity 45 MetOp 45 HL Hunley 45 trawler 45 propulsion motors 45 HMCS Chicoutimi 45 Ikaros 45 SV Concordia 45 crewmembers aboard 45 Cheri Ben Iesau 45 semisubmersible rig 45 Hansa Stavanger 45 steel hulled