Boston-class cruiser

USS Canberra on 9 January 1961
Class overview
Operators United States Navy
Preceded byN/A
Succeeded byGalveston class
SubclassesBaltimore class
Built1941-1943
In commission1955—1970
Completed2
Retired2
General characteristics
TypeGuided missile cruiser
Displacement13,600 tons
Length673 ft 3 in (205.2 m)
Beam71 ft 10 in (21.9 m)
Draft26 ft 10 in (8.2 m)
Installed power120,000 shp (89,484 kW)
Propulsion4 × 615 psi (4.2 MPa) water-tube boilers

4 × General Electric geared steam turbines

4 × shafts
Speed33 knots (61 km/h; 38 mph)
Complement1,142 officers and enlisted
Sensors and
processing systems
Armament
Aviation facilitiesHelipad

The United States Navy's Boston class were the first guided missile cruisers in the world. Both ships in this experimental class were originally Baltimore-class heavy cruisers that had been decommissioned after World War II, but were redesignated as guided missile heavy cruisers (CAGs) and entered refit in 1952. The lengthy conversion and modernization project (aka SCB 48) involved replacing the aft triple 8-inch gun turret and its supporting structure with two twin launchers for Terrier anti-aircraft guided missiles. The forward two 8-inch gun turrets remained unchanged. The forward superstructure was modified to include the Terrier's associated radars and electronics, the aft superstructure was completely replaced, and the Baltimore class's two funnels were trunked to one.[1]

Owing to the Boston class's experimental nature, the ships were only partially converted, with a full conversion to be carried out if the new weapon systems were successful. Had the ships been fully converted, the forward 8-inch turrets would have been replaced with additional Terrier launchers.[1]

In 1968 both Boston-class guided missile heavy cruisers were reclassified back to heavy cruisers (CAs), in part due to the extensive use of their 8-inch guns for shore bombardment during the Vietnam War. While they had retained their Terrier missiles, the swift advance of technology had made these pioneering weapons obsolete after little more than a dozen years' service, and the ships' main battery was once again their six remaining 8-inch guns in the forward turrets.[2]

Various proposals for limited modernization or complete reconstruction (including SCB 003.68)[2] were considered but ultimately rejected. In 1970 both Boston class ships were decommissioned for the final time, eventually struck from the Naval Vessel Register, and sold for scrap.

Ships in class

Ship Name Hull No. Converted at Laid down Launched Commissioned Decommissioned Fate
Boston CAG-1 New York Shipbuilding Corporation 30 June 1941 26 August 1942 1 November 1955 5 May 1970 Sold for scrap, 28 March 1975
Canberra CAG-2 3 September 1941 19 April 1943 15 June 1956 2 February 1970 Sold for scrap, 31 July 1980

See also

References

Notes

  1. ^ a b Friedman, Cruisers, pp. 377
  2. ^ a b Friedman, Cruisers, pp. 380

Sources

  • Friedman, Norman (1984). U.S. Cruisers: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. ISBN 0-87021-739-9.

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