The Belknap class were "fleet escorts" originally intended to be cheaper versions of the Charles F. Adams destroyers. Their ASW suite had to be improved and their range of action ported to 6000 nautical miles. Eventually studies led to even more expensive ships. It was decided to replace the Tartar missile with the less expensive Terrier system, one same Leahy hull design. Finalization resulted in a combination of the ASROC system and Terrier, with 60 or a 40 Terrier drum plus 20 ASROC drums combined in an early VLS. The missile range was initially 32 km, Mach 3 and 24,000 meters cailing. The Terrier was carrying a classic fragmentation 100 kgs warhead or nuclear, yeld 1 Kt. These ships stayed designated "fleet escorts" and then "cruisers in 1970 with ten built, the first launched in 1963 and last admitted on active service in 1967. Another indication of their initial destroyer classification th naming tradition, cities for cruisers, names for officers or public figures playing a role for navy.
These ships also embarked for a while ASM helicopter drones (DASH), and four TTs special ASM mk48 at the stern. They were also permanently equipped with the NTDS (Tactical Naval Data Integration System). These ships knew their baptism of the fire with the viet-nâm: Thus on April 19, 1972 the USS Sterret destroyed a large North-Vietnamese anti-ship missile Styx with the help of one of its Terrier (a world first), and downed two Migs during a combined air/surface attack, demonstrating the effectiveness of NTDS. On 19 July, USS Biddle dispersed a formation of Migs attacked at night, destroying two. They were later modernized, USS Wainwright testing the new SM2 ER, USS Fox testing Tomahawks in 1977, and from 1981 all received two quadruple ramps of Harpoons. On this occasion, they also received SPS48 and 49 radars. They were all active in the 1990s, but removed from service in 1993-95, all scrapped since, none preserved.
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