Endeavor, The - 220-ton windjammer on the maritime adventure BARRIER REEF/NBC/1971-72. The Endeavor was used by Captain Chet King (Joe James) and his crew of marine biologists to study the Great Barrier Reef in this 30-minute live-action series from Australia. The Great Barrier Reef is the largest coral reef in the world (1,200 miles long) located in the Coral Sea off the coast of Queensland, NE Australia.