The Spruance-class destroyer was developed by the United States to replace the many World War II–built - and s, and was the primary destroyer built for the United States Navy during the 1970s and 1980s. It was named in honor of U.S. 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 the Battle of the Philippine Sea.
Introduced 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, and automated 127 mm (5-inch) guns. The Spruance class was originally designed to escort a carrier group, primarily for anti-submarine warfare (ASW), with point-defense anti-aircraft warfare (AAW) missiles and limited anti-ship capabilities. Two dozen members of the class were upgraded with Tomahawk cruise missiles for land attack. The Navy retired the class somewhat earlier than planned, decommissioning the last ship in 2005. Most Spruances were broken up or destroyed as targets. Its hull form and propulsion plant were adopted as the foundation of the Ticonderoga-class cruisers constructed in the 1980s. The class was succeeded as the main U.S. destroyer by the Arleigh Burke-class destroyer.
History
Design
Much larger than other destroyers of the era, the Spruances were comparable in size to contemporary guided-missile cruisers (CG and CGN) and U.S. Navy light cruisers (CL) in World War II. This allowed them to accommodate a helicopter flight deck, a first for a U.S. Navy destroyer, and an enclosed hangar with space for up to two medium-lift helicopters, a first for a U.S. Navy destroyer or cruiser. The "Spru-cans" were the first large U.S. Navy ships to use gas turbine propulsion: four General Electric LM2500 gas turbines that generated about 80,000 horsepower (60 MW). This configuration (developed in the 1960s by the Royal Canadian Navy for the s 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) used the LM2500 COGAG arrangement, usually with two 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, implied that the vessels were weak compared to Soviet designs that carried large numbers of anti-ship missiles. The Spruance class was also unfavorably compared to earlier U.S. designs that had more visible guns or launchers for Standard medium-range missiles. Their advocates noted that they were successful in their intended ASW role due to their seaworthiness, quiet operation, and ability to operate two helicopters.
The Spruance class received the "DD" designation in the hull classification symbol system which was previously applied to gun destroyers, though their primary armament as designed was missiles. However, their original complement of 8 Sea Sparrow anti-aircraft missiles was only sufficient for point defense, compared to other American destroyers designated as DDG which were designed to provide anti-aircraft warfare screening to the fleet, while some newer DDG ships further added surface-to-surface capabilities for anti-ship or land strike. In the early 1980s, the class received quadruple Harpoon missile launchers that were installed amidships. Six members of the class received Armored Box Launchers Tomahawk surface-to-surface missiles, while a major update from the mid-1980s for 24 members of the class added a 61-cell Vertical Launch Missile System (VLS) for the Tomahawk. Despite these upgrades, the class remained their DD classification because they continued to lack the area anti-aircraft capabilities of guided-missile cruisers (CG and CGN) and destroyers (DDG).
Contracts
Until the class was named for Admiral Spruance, the acquisition effort had been known as the DX program. It aimed to award the production contract for the entire class of 30 ships to a single shipyard, under the Total Package Procurement concept originated by the Whiz Kids of Robert McNamara's Pentagon. The idea was to reap the benefits of mass construction. After a selection process "noted for political influence and shifting rules," the entire contract was awarded on 23 June 1970 to the Litton-Ingalls shipyard in Pascagoula, Mississippi. Labor and technical problems caused cost overruns and delayed construction.