A unit of distance formerly used at sea. The traditional U.S. mariner's cable was 120 fathoms long. This is equal to 720 feet, or 0.1185 nautical mile, or about 219.4 meters. The British Admiralty, in 1830, defined the cable to equal exactly 0.1 nautical (Admiralty) mile, which is 608 feet or about 185.3 meters. Some navies are now using a metric cable equal to exactly 200 meters (about 656.17 ft)