Related by context. Frequent words. (Click for all words.) 56 frequency sonar 55 sonar 53 marine mammals 51 Navy 51 undersea warfare 49 submarine warfare 48 whales dolphins 48 sonars 45 endangered whales 45 Apra Harbor 45 whales 44 nearshore waters 44 MARAD 43 littoral 43 marine 43 naval 43 Marine Mammal Protection 43 coastal waters 42 Coast Guard 42 navy 42 dolphins 42 maritime 42 Trident submarines 42 seabeds 42 RIMPAC 42 USCG 41 amphibious landings 41 Navies 41 Coast Guard USCG 41 beaked whales 41 Sailors 41 naval vessels 40 longlines 40 warships 40 longline fishing 40 anti submarine warfare 40 porpoises 40 Lt. Cmdr 40 marine sanctuaries 40 dolphins whales 40 Coast Guardsmen 40 kelp beds 39 vessels 39 WASHINGTON NNS 39 Sri Lankan navy 39 ships 39 naval ships 39 false killer whales 39 Aegis radar 39 submarines 39 littoral combat ships 39 NOAA 39 marine mammal 39 mariners 39 NAVY 39 Living Oceans 38 warfighting 38 navies 38 DoD 38 Warship 38 Naval 38 marine ecology 38 whaling ships 38 IUU fishing 38 gillnets 38 warship 38 territorial waters 37 Mayport 37 longline 37 bowhead whales 37 sailors 37 Sperm whales 37 Military Sealift Command 37 merchant mariners 37 dugongs 37 Whales 37 harbor seals 37 Submarine Force 37 seagrasses 37 hydrophones 37 dispersants 37 OPSEC 37 beached whales 37 unmanned underwater 36 ocean 36 seagrass beds 36 Hawaiian monk seal 36 shallow waters 36 Aegis destroyers 36 aircraft carrier 36 Sonar 36 DOD 36 sea lions 36 whale 36 Warships 36 submarine 36 sperm whales 36 monk seals 36 UNCLOS 36 fishing trawlers 36 ballistic missile submarine