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HMS Ruler (D72)
Encyclopedia
HMS Ruler was an escort aircraft carrier
Escort aircraft carrier
The escort aircraft carrier or escort carrier, also called a "jeep carrier" or "baby flattop" in the USN or "Woolworth Carrier" by the Royal Navy, was a small and slow type of aircraft carrier used by the British Royal Navy , the Imperial Japanese Navy and Imperial Japanese Army Air Force, and the...
of the British Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...
during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
. Built in the United States as St. Joseph (AVG/CVE/ACV-50) for lend-lease to the UK, it was a Bogue-class
Bogue class escort carrier
The Bogue-class were a group of escort carriers built in the United States for service with the U.S. Navy and the Royal Navy during World War II....
carrier.
The name St. Joseph (making it the first United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...
ship named for St. Joseph Bay
St. Joseph Bay
St. Joseph Bay is a bay on the Gulf Coast of the U.S. state of Florida, located in Gulf County between Apalachicola and Panama City. Port St. Joe is located on St. Joseph Bay....
, Florida
Florida
Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
)
was assigned to MC hull 261, a converted C3-S-A1 cargo ship, on 23 August 1942. She was laid down on 25 March 1943 by the Seattle-Tacoma Shipbuilding Corporation
Seattle-Tacoma Shipbuilding Corporation
The Seattle-Tacoma Shipbuilding Corporation was a United States corporation which built ships for the US Navy and merchant marine during World War II ....
of Tacoma, Washington
Tacoma, Washington
Tacoma is a mid-sized urban port city and the county seat of Pierce County, Washington, United States. The city is on Washington's Puget Sound, southwest of Seattle, northeast of the state capital, Olympia, and northwest of Mount Rainier National Park. The population was 198,397, according to...
; redesignated CVE-50 on 15 July; launched on 21 August 1943; sponsored by Mrs. W.W. Smyth; transferred to the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
under on 22 December 1943; and commissioned the same day as HMS Ruler with pennant number
Pennant number
In the modern Royal Navy, and other navies of Europe and the Commonwealth, ships are identified by pennant numbers...
D72.
HMS Ruler served in the North Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
during 1944 protecting the vital flow of men and war materiel from the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
to England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
and to fighting fronts on the European continent. In early 1945, she transferred to the Pacific Theatre
Pacific Theater of Operations
The Pacific Theater of Operations was the World War II area of military activity in the Pacific Ocean and the countries bordering it, a geographic scope that reflected the operational and administrative command structures of the American forces during that period...
and supported the destruction of Truk
Operation Inmate
During World War II Operation Inmate was the bombardment of Japanese bases on Truk in the Caroline Islands conducted from 12 to 16 June 1945. By this stage in the war, shore bombardment was a highly-developed technique....
and the campaign to take Okinawa
Battle of Okinawa
The Battle of Okinawa, codenamed Operation Iceberg, was fought on the Ryukyu Islands of Okinawa and was the largest amphibious assault in the Pacific War of World War II. The 82-day-long battle lasted from early April until mid-June 1945...
.
After the war ended, Ruler returned to the United States at Norfolk, Virginia
Norfolk, Virginia
Norfolk is an independent city in the Commonwealth of Virginia in the United States. With a population of 242,803 as of the 2010 Census, it is Virginia's second-largest city behind neighboring Virginia Beach....
, on 28 January 1946; was decommissioned from RN service on 29 January; and was accepted by the U.S. Navy the same day. In excess of the Navy’s needs, she was slated for disposal and struck from the Navy Register on 20 March 1946. She was sold on 13 May and scrapped within the year.
Design and description
These ships were all larger and had a greater aircraft capacity than all the preceding American built escort carriers. They were also all laid down as escort carriers and not converted merchant ships. All the ships had a complement of 646 men and an overall length of 492 inch, a beamBeam (nautical)
The beam of a ship is its width at the widest point. Generally speaking, the wider the beam of a ship , the more initial stability it has, at expense of reserve stability in the event of a capsize, where more energy is required to right the vessel from its inverted position...
of 69 inch and a draught of 25 in 6 in (7.77 m). Propulsion was provided a steam turbine, two boilers connected to one shaft giving 9,350 brake horsepower (SHP), which could propel the ship at 16.5 knots (9 m/s).
Aircraft facilities were a small combined bridge–flight control on the starboard side, two aircraft lifts 43 feet (13.1 m) by 34 feet (10.4 m), one aircraft catapult
Aircraft catapult
An aircraft catapult is a device used to launch aircraft from ships—in particular aircraft carriers—as a form of assisted take off. It consists of a track built into the flight deck, below which is a large piston or shuttle that is attached through the track to the nose gear of the aircraft, or in...
and nine arrestor wires
Arresting gear
Arresting gear, or arrestor gear, is the name used for mechanical systems designed to rapidly decelerate an aircraft as it lands. Arresting gear on aircraft carriers is an essential component of naval aviation, and it is most commonly used on CATOBAR and STOBAR aircraft carriers. Similar systems...
. Aircraft could be housed in the 260 feet (79.2 m) by 62 feet (18.9 m) hangar below the flight deck. Armament comprised: two 4 inch Dual Purpose
Dual purpose gun
A dual purpose gun is a naval artillery mounting designed to engage both surface and air targets.-Description:Second World War-era capital ships had four classes of artillery: the heavy main battery, intended to engage opposing battleships and cruisers ; a secondary battery for use against enemy...
guns in single mounts, sixteen 40 mm Bofors
Bofors 40 mm gun
The Bofors 40 mm gun is an anti-aircraft autocannon designed by the Swedish defence firm of Bofors Defence...
anti-aircraft guns in twin mounts and twenty 20 mm Oerlikon
Oerlikon 20 mm cannon
The Oerlikon 20 mm cannon is a series of autocannons, based on an original design by Reinhold Becker of Germany, very early in World War I, and widely produced by Oerlikon Contraves and others...
anti-aircraft cannons in single mounts. They had a maximum aircraft capacity of twenty-four aircraft which could be a mixture of Grumman Martlet, Vought F4U Corsair or Hawker Sea Hurricane fighter
Fighter aircraft
A fighter aircraft is a military aircraft designed primarily for air-to-air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets...
aircraft and Fairey Swordfish
Fairey Swordfish
The Fairey Swordfish was a torpedo bomber built by the Fairey Aviation Company and used by the Fleet Air Arm of the Royal Navy during the Second World War...
or Grumman Avenger anti-submarine aircraft.