Related by context. Frequent words. (Click for all words.) 51 shipborne 51 littoral waters 49 interplanetary spacecraft 49 laser altimeter 49 antisubmarine warfare 49 penetrating radar 49 inertial navigation systems 49 celestial navigation 48 ocean basins 48 antisubmarine 46 geosynchronous 46 Franz Josef Land 46 submarines 45 oceanographic 45 Remote sensing 45 admiral asks 45 ocean buoys 45 cruisers destroyers 45 polar orbiting satellites 45 upper troposphere 44 passive sonar 44 seaways 44 antarctic 44 expeditionary combat systems 44 unmanned underwater 44 Aegis Combat 44 polar orbiting 44 sonars 44 Polar Regions 44 multimission 44 Earth orbiting satellites 43 Igor Dygalo 43 situ measurements 43 AP Interview CG 43 bathymetric 43 Fridtjof Nansen 43 atmospheric aerosols 43 radiosonde 43 altimetry 43 submarine 43 Synthetic Aperture Radar 42 periscopes 42 SNM SmartBrief 42 polar regions 42 Highly enriched uranium 42 escorting merchant 42 ballistic missile submarine 42 geographically referenced 42 Spitzbergen 42 temperature salinity 42 Observing System 42 electromagnetics 42 robotic probes 42 naval destroyers 42 polar orbits 42 altimeters 42 oceanography 42 multibeam 42 Synthetic Aperture Radar SAR 42 Svalbard archipelago 42 spaceborne 41 oceans 41 desalinization plants 41 GOES satellites 41 melting icecaps 41 radar altimeter 41 satellites 41 ocean 41 Trident submarine 41 hydrographic 41 ballistic missile submarines 41 Antarctic krill 41 Antarctic seas 40 geodesy 40 oceanic 40 SSBNs 40 Antarctic 40 USS Nautilus 40 Cryosat 40 navy frigates 40 Polarstern 40 ray Space Telescope 40 AUVs 40 infrared telescopes 40 propulsion systems 40 mine sweepers 40 torpedos 40 polar icecaps 40 VHF radios 40 Antarctica 40 scatter radioactive 40 sonobuoys 40 Meteorological Satellite 40 supercarriers 40 scuba dives 40 sonar 40 Oceanographers 40 polar 40 undersea 39 Submarine Force 39 Trident submarines