The Spruance-class destroyer was developed by the United States to replace the many World War II–built Allen M. Sumner- and Gearing-class destroyers, and was the primary destroyer built for the U.S. Navy during the 1970s and 1980s. It was named in honor of United States Navy Admiral Raymond A. Spruance, who successfully led major naval battles in the Asiatic-Pacific Theater during World War II such as the Battle of Midway and Battle of the Philippine Sea.
First commissioned in 1975, the class was designed with gas-turbine propulsion, a flight deck and hangar for up to two medium-lift helicopters, all-digital weapons systems, and automated 127 mm (5-inch) guns. Serving for three decades, the Spruance class was originally designed to escort a carrier group with a primary ASW mission, with point defense anti-aircraft warfare (AAW) missiles and limited anti-ship warfare, while 24 members of the class upgraded with Tomahawk cruise missiles for land attack. Rather than extend the life of the class, the Navy accelerated its retirement. The last ship of the class was decommissioned in 2005, with most examples broken up or destroyed as targets. They were replaced in service by the Arleigh Burke-class destroyer. The Spruances were much larger than destroyers of that era, being comparable in size to contemporary guided-missile cruisers (CG and CGN) and U.S. Navy light cruisers (CL) in World War II. Their hull dimensions allowed them not only to accommodate a helicopter landing pad, a first for a U.S. Navy destroyer as flight decks were previously only found on frigates and cruisers, they were the first U.S. Navy destroyer/cruiser class to have an enclosed hangar (with space for up to two medium-lift helicopters) which was a considerable improvement over the basic aviation facilities of earlier cruisers.[4] The Spru-cans were the first large U.S. Navy ships to use gas turbine propulsion; they had four General Electric LM2500 gas turbines to generate about 80,000 horsepower (60 MW). This configuration (developed in the 1960s by the Royal Canadian Navy for the Iroquois-class destroyers and known as COmbined Gas And Gas, or COGAG) was very successful and used on most subsequent U.S. warships. As of 2010, all U.S. Navy surface combatants (except nuclear-powered aircraft carriers and the LCS-1) use the LM2500 COGAG arrangement, usually with two such turbines per shaft.
The ships were initially controversial, especially among members of the United States Congress who believed that their unimposing looks, and their original armament of two guns and an ASROC and Sea Sparrow missile launcher per ship implied that the vessels were weak compared to Soviet designs which carried large numbers of anti-ship missiles. The Spruance-class was also unfavorably compared to earlier U.S. designs which had more visible guns or launchers for the Standard medium range missiles. Despite the criticism they were successful in their intended ASW role due to their seaworthiness, quiet operation, and ability to operate two helicopters.