Related by context. Frequent words. (Click for all words.) 49 Coast Guard icebreaker 49 fabled Northwest Passage 48 Antarctic seas 47 amphibious assaults 47 HMCS Halifax 47 icebreakers 46 Aleutian chain 46 Nanisivik 46 cargo ships 46 floes 45 floe 45 factory ship Nisshin 45 treacherous seas 44 sQuba 44 mine sweepers 44 trawler sank 44 Northumberland Strait 44 torpedo tubes 44 submersible robots 44 cruise ship Carnival Splendor 44 Douglas Shoal 44 warships 44 HMCS Athabaskan 44 hovercraft 44 container ships 44 Frobisher Bay 44 shallow waters 44 pirate infested 44 deepwater port 44 nesting seabirds 44 ice floes 44 fiord 43 Northerly winds 43 ships 43 navy destroyer 43 REMUS 43 pirate infested Gulf 43 rubber rafts 43 naval warships 43 vehicles ROVs 43 AUVs 43 seaway 43 makeshift rafts 43 sunken barge 43 Drake Passage 43 Arctic Ocean 43 Lingayen Gulf 43 rough seas 43 Tugboats 43 Mona Passage 43 Nobbys Beach 43 Griffon helicopters 43 freshwater marshes 42 torrential rainstorms 42 Lake Vostok 42 Aegis destroyer 42 Ferry sinks 42 semi submersibles 42 scanning sonar 42 Bohai Sea 42 Stellwagen Bank 42 coastguard vessels 42 sea 42 Dump trucks 42 coastal waters 42 Celebes Sea 42 nearshore waters 42 Cape Flattery 42 amphibious landing 42 Calcasieu Ship Channel 42 littoral combat ships 42 Somali territorial waters 42 snowploughs 42 antisubmarine 42 robotic rovers 42 tidal turbine 42 tugboats 42 Knik Arm 42 Dornier aircraft 41 inhospitable environments 41 navy ships 41 USS Juneau 41 Admiralty Inlet 41 helos 41 southerlies 41 Red River Floodway 41 sonar 41 missile frigate 41 whitewater rapids 41 minesweepers 41 ferry ran aground 41 Antarctic waters 41 shipping lanes 41 ice jams 41 sonars 41 Salvage crews 41 vessels 41 freighters 41 robotic submarines 41 Coast Guard cutters 41 Petit Bois Island