Intel Ships:
Liberty: tends to be in the wrong place at the wrong time
Pueblo: as above, but more so
Little Toy Dog: went out, did not come back
Golden Hind: the captain has a nose for bullion, sometimes acquired legitimately
Captain Nemo, out of Nautilus: prefers to visit Water Worlds
Paladin: mercenary cruiser, "have guns, will jump"
Not Very Popular Scout Ships:
Sir John Franklin: jumps off into the Great Beyond
Captain Robert Scott: has problems making it back
Sir Ernest Shackleton: always makes it back, just not on time
John Cabot: one good trip and then, see Franklin
Magellan: crew might return, ship iffy
George De Long
Adolphus Greely
Vitus Bering
Willem Barentsz
Henry Hudson: crews have this distressing tendency to mutiny
Roald Amundsen: good trips, and then comes the Great Beyond