Related by context. Frequent words. (Click for all words.) 58 Arctic explorer 52 Sir Ernest Shackleton 52 Erebus 51 Robert Peary 51 Ernest Shackleton 50 underwater archaeologist 50 Roald Amundsen 49 destroyer escort 48 HMAS Sydney 48 Coast Guard icebreaker 48 warship 48 Bonhomme Richard 47 Whydah 47 shipwrecks 47 HMAS 47 schooner 47 Northwest Passage 46 minesweeper 46 Coast Guard cutter 46 Rescue Coordination Center 46 shipwreck 46 coastguard helicopter 46 Scapa Flow 46 Antarctic Expedition 46 Navy frigate 45 Antarctic expedition 45 Cormorant helicopter 45 sloop 45 paddle steamer 45 Horatio Nelson 45 missile cruiser USS 45 fugitive slaves 45 Fort Ticonderoga 45 schooners 45 explorers 45 crewmen aboard 44 HMS Bounty 44 expedition 44 Navy warship 44 McMurdo Sound 44 destroyer USS 44 HMS Beagle 44 HMS Sussex 44 lightship 44 Barbary pirates 44 navy frigate 44 underwater archeology 44 frogmen 44 aviator Amelia Earhart 44 Ferdinand Magellan 44 Lifeboats 43 whaler 43 Expeditionary Force 43 Sea Shepherd vessel 43 frigate 43 workboat 43 USS Juneau 43 clipper ship 43 L' Acadien II 43 Napoleonic Wars 43 Khe Sahn 43 merchant vessel 43 HMS 43 battleship USS 43 Leading Seaman 43 Warship 43 USNS 43 RNLI lifeboat 43 Sir Galahad 43 robotic submarine 43 carrier USS 42 redcoats 42 foot sloop 42 HMS Iron 42 Rescue Coordination Centre 42 RNLI lifeboats 42 HMS Cumberland 42 whaling ship 42 whaling fleet 42 navy divers 42 sunken vessel 42 inshore lifeboat 42 Aegis destroyer 42 USS Hornet 42 Pong Su 42 Ghost Fleet 42 gunboat 42 naval vessel 42 Wing Cmdr 42 Able Seaman 42 polar explorer 42 masted schooner 42 whaling vessel 42 LSTs 42 Falklands Islands 42 rigid hull inflatable 42 Coast Guard cutters 42 Napoleonic wars 42 guided missile frigate 42 Kormoran 41 merchant seaman