|The Cannon Class was the next evolution. However, because of higher priority construction for the diesel electric drive, the Cannon Class had to revert to the 6,000 hp diesel/electric powerplant and were typed as DET for diesel-electric tandem diesel.
Their displacement was 1,250-tons standard, 1,600-tons full load. Dimensions were 306-feet (93.27m) overall, and 300-feet (91.44m) waterline. Beam was 36-feet 7-inches (11.15m) and draught of 10-feet 5-inches (3.2m) Two General Motors diesels
provided 6,000 hp for a maximum speed of 21-knots. The range was 11,500nm at 11-knots. The original armament was three- 3-inch/50, two single 40mm Bofors, eight 20mm Oerlikons and a triple 21-inch torpedo mount. A crew of 186 was carried.
To build the anticipated quantities new yards had to be built. The established yards had their hands full with other construction. A few of the first Evarts Class short-hull DEs were built at Boston Navy Yard, Mare Island yard and Puget Sound yard.
Four new yards were built and numbers of existing merchant yards were contracted for building of the Destroyer Escorts. These yards had to juggle construction of the DEs with the construction of various landing craft. The USS Cannon was DE-99
and was built in the private yard of Dravo Shipbuilding at Wilmington, Delaware. Dravo built nine of the Cannon Class ships. Cannon was laid down on November 14, 1942, launched on May 25, 1943 and commissioned on September 26, 1943. From
November 1943 until December 1944 the Cannon escorted convoys from Trinidad to Recife, Brazil, except for one convoy of tankers from Brazil to Gibraltar. By 1944 the war against the U-Boat had been won and along with cancellation of
construction of further DEs, the Navy started decommissioning the slower units. Cannon was one of the first to be so decommissioned, which occurred on December 19, 1944. However, the Cannon still had a long life ahead of her. She was sold to
Brazil that month and became the Baependi and served until 1965 when she was placed in reserve. The Cannon/Baependi was broken up in 1973.
(Bulk of history from: Anatomy of the Ship, The Destroyer Escort England by Al Ross, Conway Maritime Press 1985; Destroyers of World War Two, An International Encyclopedia, by M. J. Whitley, Naval Institute Press 1988; Tempest Fire
& Foe, Destroyer Escorts in World War II and The Men Who Manned Them by Lewis M. Andrews Jr., Trafford Publishing 1999; U.S. Destroyers, An Illustrated Design History by Norman Friedman and drawings by A.D. Baker III, Naval
Institute Press 1982)