The Arsenal Ship Project was hailed as 21st century battleships, and implemented by the United States Navy and DARPA. Promoted from the 1990s by the 25th Chief of Naval Operations. Research was carried out for a collaborative battle system in which certain ships would be fully equipped only with armaments and all tasks such as electronic tracking and aiming are directed via data link system from a command ship outfitted with electronic equipment. These fully armed combat vessels are referred to as arsenal ships. They are equipped with overwhelming firepower and a hull built for stealth.