Related by context. Frequent words. (Click for all words.) 58 Coast Guard icebreaker 54 icebreaker 53 vessel 49 Coast Guard 49 underwater robot 48 floe 48 ship 47 liferaft 47 ice floe 47 L' Acadien II 47 HMCS Chicoutimi 47 Sapphire Princess 46 cargo ship 46 Arctic explorer 46 lifeboat 46 lifeboats 46 workboat 46 Arctic 46 vessels 45 Tugboats 45 warship 45 Antarctic 45 Cougar Ace 45 coastguard helicopter 45 McMurdo Sound 45 tug boat 45 Cormorant helicopter 45 icebreakers 45 navy frigate 45 Bering Sea 45 crewmen 45 tugboat 45 schooner 44 Antarctica 44 ships 44 hovercraft 44 freighter 44 boats 44 Coast Guard cutter 44 boat 44 Navy warship 44 aboard 44 Antarctic expedition 44 whale 44 Lifeboats 44 icebreaking 44 Arctic Ocean 44 Salvage crews 43 helicopter 43 Coast Guard Cmdr 43 Picton Castle 43 submarine 43 Jayhawk helicopter 43 Hadow 43 inflatable dinghy 43 inflatable boat 43 crew 43 frigate 43 arctic 42 AUVs 42 Arctic Sunrise 42 robotic submarines 42 oceanographic 42 sailboat 42 crewmembers 42 whaling vessel 42 inflatable boats 42 skimming vessel 42 fin whale 42 Farley Mowat 42 cruise ship 42 Shen Neng 1 42 navy destroyer 42 Alaska Aleutian Islands 42 sealift 42 Resolute Bay 42 crewmember 42 trawler 42 floatplane 42 Chilingarov 42 rough seas 42 naval destroyer 42 submersibles 42 airship 41 Pasha Bulker 41 divers 41 skiff 41 ship docked 41 Coast Guard Cutter 41 submersible 41 Coast Guard PCG 41 astronaut Julie Payette 41 mariners 41 ocean 41 Coastguard Agency MCA 41 fireboat 41 HMS Cumberland 41 nautical miles 41 rowboat 41 Hovercraft 41 pontoon