In 1755, having risen to be a mate, Cook joined the Royal Navy, and after four years' service was, on the recommendation of Sir Hugh Palliser, his commander, appointed master successively of the sloop Grampus, of the Garland and of the Solebay, in the last of which he served in the St. Lawrence.
Tap Bolt vs Cap Screw. What is the difference between a tap bolt and a cap screw? A tap bolt is (typically) a fully threaded hex bolt, while a cap screw is (typically) a hex head bolt that will be installed by turning the head of the bolt (screw) instead of tightening it with a nut.
If you see one sold as M3 x 1.5 x 10, it means the bolt is 3 mm in diameter, the thread count is 1.5 mm from crest to crest, and the length is 10 mm. Metric and standard nuts and bolts and can never be mixed. A screw is a type of bolt, but can also be self-tapping, like a woodscrew.