Two Foster-Wheeler Express "D"-type water-tube boilers, two GE steam turbines of 13,500 horsepower (10,100 kW) total, two generators (9,200 kilowatts (12,300 hp) total), 12,000 horsepower (8,900 kW) of electric motors drove the two propeller shafts
The Buckley class was the second class of destroyer escorts, succeeding the Evarts-class destroyer escorts. One of the main design differences was that the hull was significantly lengthened on the Buckley class; this long-hull design proved so successful that it was used for all further destroyer escort classes. The class was also known as the TE type, from Turbo Electric drive. The TE was replaced with a diesel-electric plant to yield the design of the successor Cannon class ("DET").[1][2]
In total, 154 were ordered with six being completed as high-speed transport ("APD"). A further 37 were later converted after completion, while 46 of the Buckleys were delivered to the Royal Navy under the Lend-Lease agreement. These 46 were classed as frigates and named after Royal Navy captains of the Napoleonic Wars, forming part of the Captain-class frigate along with 32 Lend-Lease ships of the Evarts class.
After World War II, most of the surviving units of this class were transferred to Taiwan, South Korea, Chile, Mexico, or other countries. The rest were retained by the US Navy's reserve fleet until they were decommissioned.
Armament
The Buckley-class' main armament was three 3-inch/50-caliber guns in Mk 22 dual-purpose open mounts. They fired fixed-type ammunition (antiaircraft, armor-piercing, or star shell) and had a range of 14,600 yards (13,400 m) at 45°, and an antiaircraft ceiling of 28,000 feet (8,500 m)
For antiaircraft defense, the Buckley-class carried four 1.1 inch/75 (28mm) guns or two Bofors 40 mm L/60 guns fitted in the 'X' position. These were not included in the Captain-class units. Eight Oerlikon 20 mm cannons were positioned two in front of the bridge behind and above B gun mount, one on each side of the B gun mount in sponsons, and two on each side of the ship in sponsons just abaft the funnel. Some of the ships had extra Oerlikons fitted on top of the superstructure amidships. The Captain-class units had additional 20 mm guns fitted in 'X' position, and on the director stand for 'X' position.
For antisubmarine weapons, the Buckley class carried a Hedgehog, a British designed spigot mortar that fired 24 bombs ahead of the ship. This was situated on the main deck just aft of 'A' mount. They also carried up to 200 depth charges. Two sets of double rails mounted on each side of the ship at the stern, each holding 24 charges and eight (two on Captain-class units) K-gun depth-charge throwers each holding five charges were on each side of the ship forward of the stern rails. On Captain-class ships, just forward of these, double sets of ready racks were fitted along each side of the ship extending to midships, each set holding 60 depth charges (these ready rails were added after the ships first arrived in the UK).
They also carried three 21-inch (533 mm) torpedo tubes in a triple mount mounted just aft of the stack.[3]
Torpedoed by U-473 in North Atlantic 3 May 1944; reclassified IX-182 15 Jul 1944; served as a floating power plant at Cherbourg, France. Struck from the Navy List 10 Nov 1945; sold 29 Apr 1946
Reclassified APD-41 in mid-1945 but conversion to High Speed Transport was canceled 10 Sep 1945. Struck from Navy List 1 Nov 1945, sold and broken up 26 Nov 1946
Reclassified APD-58 in mid-1945 but conversion to High Speed Transport was canceled 15 Aug 1945. Struck from Navy List 16 Nov 1945, sold and broken up 2 Dec 1946
Conversion to High Speed Transport and reclassification as APD-83 canceled September 1945. Reclassified EDE-791 14 Aug 1946. Struck from Navy List 1 Jun 1965, sold for scrap 11 Mar 1966
^Rivet, Eric; Stenzel, Michael (22 April 2011). "History of Destroyer Escorts". Destroyer Escort Historical Museum. Archived from the original on 4 May 2018. Retrieved 8 July 2012. The CANNON class was very similar in design to the BUCKLEY class, the primary difference being a diesel-electric power plant instead of the BUCKLEY class's turbo-electric design. The fuel-efficient diesel-electric plant greatly improved the range of the CANNON class, but at the cost of speed.