HAMMOCK, on shipboard, a piece of canvas six feet long and three feet wide, gathered together at the two ends, and hung horizontally under the deck lengthwise, for the sailors to sleep therein. There are usually from 14 to 20 inches in breadth allowed between-decks for every hammock in a ship of war: this space, however, must in some measure depend on the number of the crew, &c. in proportion to the room of the vessel. In the time of battle the hammocks, together with their bedding, are all firmly corded, and fixed in the nettings on the quarter-deck, or wherever the men are too much exposed to the view or fire of the enemy.