The USNS Zeus (T-ARC 7), operated by Military Sealift Command, is a cable repair ship which transports, deploys, retrieves and repairs submarine cables. The USNS Zeus performs maintenance on the Sound Surveillance System (SOSUS) which is a network of strategically placed sonar sensors that provide early warning of submarines.
The USNS Zeus (T-ARC 7) was built specifically for the Navy; the ship can lay up to 1,000 miles of cable in depth of 9,000 feet during a single deployment before having to restock its cable supply. The USNS Zeus is the only active Cable Repair Ship in the U.S. Navy.
