The ''Claud Jones''-class destroyer escorts were four

destroyer escort Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships. Development of the destroyer escort was promoted by th ...

s built for the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

in the late 1950s. These ships were a

diesel Diesel may refer to: * Diesel engine, an internal combustion engine where ignition is caused by compression * Diesel fuel, a liquid fuel used in diesel engines * Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...

-powered version of the earlier and were designed with the aim of producing a cheaper ship suitable for rapid production in wartime. These ships also had reduced armament and speed compared to their predecessors. They were not seen as effective

anti-submarine warfare Anti-submarine warfare (ASW, or in older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are t ...

vessels by the United States Navy and were sold after only 15 years service to the

Indonesian Navy The Indonesian Navy ( id, Tentara Nasional Indonesia Angkatan Laut, , Indonesian National Military-Naval Force, TNI-AL) is the naval branch of the Indonesian National Armed Forces. It was founded on 10 September 1945 and has a role to patrol ...

Description

The class was designed under project SCB 131 as a cost-effective version of an

(ASW) ship that could be built quickly in case of rapid mobilization. The ''Claud Jones'' class had a

standard displacement The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into wei ...

of and were at full load. The destroyer escorts were long at the

waterline The waterline is the line where the hull of a ship meets the surface of the water. Specifically, it is also the name of a special marking, also known as an international load line, Plimsoll line and water line (positioned amidships), that indi ...

and

overall Overalls, also called bib-and-brace overalls or dungarees, are a type of garment usually used as protective clothing when working. The garments are commonly referred to as a "pair of overalls" by analogy with "pair of trousers". Overalls were ...

with a beam of and a

draft Draft, The Draft, or Draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a vesse ...

of . The ''Claud Jones'' class had an aluminum superstructure, a tripod mast forward and a pole mast further back amidships, with two stacks. Following the guidelines given to them, the designers chose a two-

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-powered ship to maximize cost effectiveness. The ''Claud Jones'' class were given four Fairbanks Morse 38ND8

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-ca ...

s rated at . The class had a range of at and a maximum speed of . The ships were initially armed with two /50 caliber guns, one located forward with a closed shield and one located aft with an open shield. For ASW, the destroyer escorts were equipped with two forward-firing

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anti-submarine

mortars Mortar may refer to: * Mortar (weapon), an indirect-fire infantry weapon * Mortar (masonry), a material used to fill the gaps between blocks and bind them together * Mortar and pestle, a tool pair used to crush or grind * Mortar, Bihar, a villag ...

, two fixed

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s for Mk 32 torpedoes and one depth charge rack placed over the stern. The fixed torpedo tubes were later removed and replaced with two triple tube mounts. In 1961, ''Charles Berry'' and ''McMorris'' received a Norwegian-designed Terne III depth charge system deployed via rockets. The ''Claud Jones'' class was initially equipped with

variable depth sonar A towed array sonar is a system of hydrophones towed behind a submarine or a surface ship on a cable. Trailing the hydrophones behind the vessel, on a cable that can be kilometers long, keeps the array's sensors away from the ship's own noise sour ...

, AN/SPS-10 and

AN/SPS-6 AN/SPS-6 is a two-dimensional radar manufactured by Bendix and Westinghouse Electric. It was used by the US Navy as a first-generation air-search radar after World War II, and was widely exported to allies. In addition, the improved AN/SPS-12 is ...

radar Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, we ...

s and SQS-29/32 hull-mounted

sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on o ...

. The variable depth sonar was later removed. The vessels had a ship's company of 175 with 15 officers and 160

enlisted Enlisted may refer to: * Enlisted rank An enlisted rank (also known as an enlisted grade or enlisted rate) is, in some armed services, any rank below that of a commissioned officer. The term can be inclusive of non-commissioned officers or ...

personnel. The class was not well-received and the designers were ordered to come back with another design, leading to the successor s.

Indonesian service

The four vessels of the class were transferred to the

in 1973–1974. In Indonesian service, ''Samadikun'' (ex-''John R. Perry'') and ''Martadinata'' (ex-''Charles Berry'') had one of the 3-inch guns removed and given

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twin-mounted guns and twin-mounted guns. ''Monginsidi'' (ex-''Claud Jones'') and ''Ngurah Rai'' (ex-''McMorris'') kept their two 3-inch mounts and had twin-mounted 25 mm guns added.

Ships in class

Notes

Citations

References

* * *

External links

''Claud Jones''-class ocean escorts
a
Destroyer History Foundation

{{DEFAULTSORT:Claud Jones Indonesian Navy