Capstan (nautical)
A capstan is a vertical-axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables, and hawsers. The principle is similar to that of the windlass, which has a horizontal axle.
Capstan
Anchor windlass
The capstan and the anchor windlass on the deck below that it drives. On-board the museum sailing ship Balclutha