Related by context. Frequent words. (Click for all words.) 61 Shenzhou spacecraft 59 submersible 58 REMUS 58 AUVs 57 INS Arihant 57 sunken warship 57 Shenzhou VII 56 Aegis destroyer 55 sQuba 55 Chang'eI 55 submersible robot 55 missile frigate 55 submersibles 54 Shenzhou V 54 manned spaceship 53 antisubmarine 53 Varyag 53 Remora 53 Liu Boming 53 supersonic cruise missile 52 Sea Fleet 52 Vinasat 52 unmanned underwater 52 unmanned lunar 52 lunar orbiter 52 Shenzhou IV 52 Bohai Sea 52 Fei Junlong 52 naval destroyers 52 PlanetSolar 52 submarine 52 submersible robots 52 unpiloted 52 HMS Daring 51 Lunar Reconnaissance Orbiter LRO 51 ballistic missile submarine 51 Brahmos 51 Discovery undocked 51 lunar probe Chang'e 51 minesweeping 51 Dragon capsule 51 robotic rover 51 laser altimeter 51 INS Jalashwa 51 Costa Allegra 51 sea 51 USS Nautilus 51 Zhai Zhigang 51 Virgin Galactic SpaceShipTwo 51 sunken wreckage 51 VSS Enterprise 50 manned spacecraft 50 HMCS Athabaskan 50 autonomous underwater 50 Wallops Island Va. 50 scramjet engine 50 Admiral Kuznetsov 50 Chilingarov 50 indigenously built 50 vehicles ROVs 50 Celebes Sea 50 SV Concordia 50 rigid hull inflatable 50 JHSV 50 PSLV C# 50 Tiangong 50 Foveaux Strait 50 Antarctic expedition 50 INS Mysore 50 Senopati Nusantara 50 Littoral Combat Ship LCS 50 AUV 50 Valiant Shield 50 HMS Endurance 49 French Frigate Shoals 49 Shenzhou VI 49 robotic submarines 49 SSBNs 49 Space Launch Vehicle 49 rigid inflatable boat 49 Odyssey Explorer 49 Cosmodrome 49 KSLV 1 49 pressurized module 49 zodiacs 49 Baengnyeong Island 49 SELENE 49 Aegis destroyers 49 warship 49 Ehime Maru 49 robotic rovers 49 Kaiko 49 Atago 49 taikonaut 49 Bulava missile 49 stealth frigates 49 Mars Reconnaissance Orbiter MRO 49 oceanographic survey 49 crane barge 49 hydrographic survey 49 INS Viraat