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Cannon-class destroyer escort
USS Cannon (DE-99).jpg
The USS Cannon (DE-99)
Class overview
Name: Cannon class destroyer escort
Operators:  United States Navy
 Free French Naval Forces
 Brazilian Navy
 Hellenic Navy
 Japan Maritime Self-Defense Force
 Philippine Navy
 Republic of China Navy
 Republic of Korea Navy
 Royal Thai Navy
 Marina Militare
 Peruvian Navy
 Uruguayan Navy
Preceded by: Buckley class destroyer escort
Succeeded by: Edsall class destroyer escort
Planned: 116
Completed: 72
Cancelled: 44
Preserved: 1
General characteristics
Type: Destroyer Escort
Displacement: 1,240 tons standard
1,620 tons full load
Length: 93.3 metres (306.1 ft)
Beam: 11 metres (36.1 ft)
Draft: 3.5 metres (11.5 ft) full load
Propulsion: 4 GM Mod. 16-278A diesel engines with electric drive
4.5 MW (6000 shp), 2 screws
Speed: 21 knots
Range: 10,800 nmi at 12 knots (22 km/h)
Complement: 15 officers
201 enlisted men

The Cannon class destroyer escorts were built by the United States primarily for ocean anti-submarine warfare escort service during World War II. The lead ship, USS Cannon (DE-99) was commissioned on 26 September 1943 at Wilmington, Delaware. Of the 116 ships ordered 44 were canceled and six commissioned directly into the Free French Forces. Destroyer escorts were regular companions escorting the vulnerable cargo ships.

The class was also known as the DET type from their Diesel Electric Tandem drive.[1] The DET's substitution for a turbo-electric propulsion plant was the primary difference with the predecessor Buckley ("TE") class.[2] The DET was in turn replaced with a direct drive diesel plant to yield the design of the successor Edsall ("FMR") class.[3]

BRP Rajah Humabon (PF-11) of the Philippine Navy, formerly the USS Atherton (DE-169), remains as the only confirmed commissioned ship of this class as of 2013.

Hull numbers

A total of 72 ships of the Cannon class were built.

  • DE-99 through DE-113 (six are French)
  • DE-162 through DE-197
  • DE-739 through DE-750
  • DE-763 through DE-771

Wartime transfers

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During World War II, six ships of the class were earmarked for the Free French Naval Forces and a further eight were transferred the Brazilian Navy.

Free French Ships

Transferred to Brazil

Postwar dispersal

After the end of World War II the United States Navy transferred many ships of the Cannon class to other navies

Transferred to Uruguay

Transferred to Greece

Transferred to Italy

Transferred to Japan

Transferred to the Netherlands

Transferred to Peru

Transferred to the Philippines

BRP Rajah Humabon (PF-11) of the Philippine Navy

Transferred to South Korea

Transferred to Republic of China (Taiwan)

Transferred to Thailand

Other notables


  1. U.S. Destroyers: an illustrated design history by Norman Friedman. Chapter 7. ISBN 1-55750-442-3.
  2. Rivet, Eric; Stenzel, Michael (April 22, 2011). "Classes of Destroyer Escorts". History of Destroyer Escorts. Destroyer Escort Historical Museum. Retrieved July 8, 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." 
  3. Rivet, Eric; Stenzel, Michael (April 22, 2011). "Classes of Destroyer Escorts". History of Destroyer Escorts. Destroyer Escort Historical Museum. Retrieved July 8, 2012. "Except for the propulsion, the EDSALL class was nearly identical to the CANNON class in every respect. This fourth class of destroyer escort mounted a direct drive diesel configuration that proved to be extremely reliable." 

External links

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