Pioneer at anchor, 3 February 1945 | |
History | |
---|---|
United Kingdom | |
Name | Pioneer |
Ordered | 7 August 1942 |
Builder | Vickers-Armstrong, Barrow-in-Furness |
Laid down | 2 December 1942 |
Launched | 20 May 1944 |
Completed | 8 February 1945 |
Decommissioned | 1954 |
Identification | Pennant number: R76 |
Fate | Sold for scrap, September 1954 |
General characteristics | |
Class and type | Colossus-class aircraft-maintenance ship |
Displacement | |
Length | 695 ft (211.8 m) |
Beam | 80 ft 4 in (24.49 m) |
Draught | 23 ft (7.0 m) (deep load) |
Installed power |
|
Propulsion | 2 × shafts; 2 × geared steam turbine sets |
Speed | 25 knots (46 km/h; 29 mph) |
Range | 12,000 nmi (22,000 km; 14,000 mi) at 14 knots (26 km/h; 16 mph) |
Complement | 1,076 |
Sensors and processing systems | 6 × Type 262 gunnery radars |
Armament |
|
Aircraft carried | None |
HMS Pioneer was a Colossus-class aircraft carrier built for the Royal Navy during World War II. She was modified whilst under construction into an aircraft maintenance carrier. The ship arrived in Australia in mid-1945 to support operations by the British Pacific Fleet against Japanese forces. She supported the British attacks on the Japanese Home Islands from mid-June until the end of the war in August from a base in the Admiralty Islands. The ship and her facilities were used to help repair Hong Kong's infrastructure in late 1945 and she returned to the UK in early 1946. Pioneer was immediately placed in reserve upon her arrival and she was sold in 1954 for scrap.
The Colossus-class aircraft carriers were intended to meet a shortage of naval flight decks. Their design was based on that of the Illustrious-class aircraft carriers, but modified to permit rapid construction in commercial yards. Pioneer was not completed to her original design; the success of the maintenance aircraft carrier Unicorn prompted modification of the ship, whilst under construction, to an aircraft maintenance ship without aircraft catapults. [1]
Pioneer had an overall length of 695 feet (211.8 m), a beam of 80 feet 4 inches (24.5 m), and a draught of 23 feet (7.0 m) at deep load. She displaced 12,000 long tons (12,000 t) at standard load. Each of the ship's two sets of Parsons geared steam turbines drove one propeller shaft. Steam was supplied by four Admiralty three-drum water-tube boilers operating at a pressure of 400 psi (2,758 kPa ; 28 kgf/cm2 ). The turbines were designed for a total of 40,000 shaft horsepower (30,000 kW) and gave Pioneer a speed of 25 knots (46 km/h; 29 mph). [2] The ship carried 3,196 long tons (3,247 t) of fuel oil which gave her a range of 8,500 nautical miles (15,700 km; 9,800 mi) at 11 knots (20 km/h; 13 mph). [3]
In order to maximize space for workshops and stores, the ship's arresting gear and catapult were not fitted; two large deckhouses were added to port of the island and on the rear of the flight deck. The ship had a single hangar, 17 feet 6 inches (5.33 m) high. Aircraft were transported between the hangars and the flight deck by two aircraft lifts; each measured 34 by 45 feet (10.4 m × 13.7 m). [4] Two large cranes were mounted on the flight deck to move aircraft and stores to and from the flight deck. The ship carried two small self-propelled lighters to allow unflyable aircraft to be transferred between ships or to shore facilities. Bulk petrol storage consisted of 98,600 imperial gallons (448,000 L; 118,400 US gal). [5] The ship's crew totaled 854, plus 222 in her aircraft repair department. [2]
The ship was equipped with six quadruple mounts for the 40-millimetre (1.6 in) QF 2-pounder Mk VIII gun ("pom-pom"). [3] These gun mounts could depress to −10° and elevate to a maximum of +80°. The Mk VIII 2-pounder gun fired a 40-millimetre (1.6 in) shell to a distance of 3,800 yards (3,500 m) at a rate of fire of approximately 96–98 rounds per minute per barrel. [6] She was also fitted with 19 Bofors 40 mm guns in single mounts. [3] The Bofors had a rate of fire of about 120 rounds per minute and a maximum range of 10,750 yards (9,830 m). [7] All of the guns were mounted on the flight deck, not in sponsons on the side of the hull like her half-sisters that were completed as aircraft carriers. [8] Each "pom-pom" mount was provided with a separate fire-control director fitted with a Type 262 gunnery radar. [2]
Pioneer was ordered on 7 August 1942 under the name Ethalion, [9] but was renamed Mars later in 1942. [10] She was laid down at Vickers-Armstrong in Barrow-in-Furness on 2 December and was launched on 20 May 1944 [9] The ship was renamed Pioneer in July 1944 [10] after the decision had been made to convert her to an aircraft maintenance ship. [1] and was completed on 8 February 1945. [9]
After working up, Pioneer sailed for Australia on 30 March 1945. She arrived in Sydney on 13 May and was transferred to Manus Island, in the Admiralty Islands, on 21 June to prepare for operations off Japan. She was still there when Japan surrendered on 15 August and had repaired 24 aircraft since her arrival. Pioneer arrived in Hong Kong in late September to help with the rebuilding of the colony's infrastructure. Her sailors restored power, telephone service and repaired trains and buses. She made one trip back to Manus, but was back in Hong Kong in late November. The ship sailed for Sydney the following month and departed for the UK on 17 February 1946. Upon her arrival, she was placed in reserve. Pioneer was sold to Thos. W. Ward for scrap in September 1954 and broken up in Inverkeithing. [11]
HMS Illustrious was the lead ship of her class of aircraft carriers built for the Royal Navy before World War II. Her first assignment after completion and working up was with the Mediterranean Fleet, in which her aircraft's most notable achievement was sinking one Italian battleship and badly damaging two others during the Battle of Taranto in late 1940. Two months later the carrier was crippled by German dive bombers and was repaired in the United States. After sustaining damage on the voyage home in late 1941 by a collision with her sister ship Formidable, Illustrious was sent to the Indian Ocean in early 1942 to support the invasion of Vichy French Madagascar. After returning home in early 1943, the ship was given a lengthy refit and briefly assigned to the Home Fleet. She was transferred to Force H for the Battle of Salerno in mid-1943 and then rejoined the Eastern Fleet in the Indian Ocean at the beginning of 1944. Her aircraft attacked several targets in the Japanese-occupied Dutch East Indies over the following year before Illustrious was transferred to the newly formed British Pacific Fleet (BPF). The carrier participated in the early stages of the Battle of Okinawa until mechanical defects arising from accumulated battle damage became so severe she was ordered home early for repairs in May 1945.
HMS Formidable was an Illustrious-class aircraft carrier ordered for the Royal Navy before the Second World War. After being completed in late 1940, she was briefly assigned to the Home Fleet before being transferred to the Mediterranean Fleet as a replacement for her crippled sister ship Illustrious. Formidable's aircraft played a key role in the Battle of Cape Matapan in early 1941, and they subsequently provided cover for Allied ships and attacked Axis forces until their carrier was badly damaged by German dive bombers in May.
The Illustrious class was a class of aircraft carrier of the Royal Navy that included some of the most important British warships in the Second World War. They were laid down in the late 1930s as part of the rearmament of British forces in response to the emerging threats of Nazi Germany, Fascist Italy and Imperial Japan.
HMS Indefatigable was one of two Implacable-class aircraft carriers built for the Royal Navy (RN) during World War II. Completed in 1944, her aircraft made several attacks that year against the German battleship Tirpitz, inflicting only light damage; they also raided targets in Norway. The ship was transferred to the British Pacific Fleet (BPF) at the end of the year and attacked Japanese-controlled oil refineries in Sumatra in January 1945 before joining the American forces in March as they prepared to invade the island of Okinawa in Operation Iceberg. Indefatigable and the BPF joined the Americans in attacking the Japanese Home Islands in July and August. Following the end of hostilities she visited ports in Australia, New Zealand and South Africa.
The Implacable-class aircraft carrier consisted of two aircraft carriers built for the Royal Navy during World War II. Derived from the design of the Illustrious class, they were faster and carried more aircraft than the older ships. They were initially assigned to the Home Fleet when completed in 1944 and attacked targets in Norway as well as the German battleship Tirpitz. Subsequently, they were assigned to the British Pacific Fleet (BPF).
HMS Implacable was the name ship of her class of two aircraft carriers built for the Royal Navy during World War II. Upon completion in 1944, she was initially assigned to the Home Fleet and attacked targets in Norway for the rest of the year. She was subsequently assigned to the British Pacific Fleet (BPF) where she attacked the Japanese naval base at Truk and targets in the Japanese Home Islands in 1945. The ship was used to repatriate liberated Allied prisoners of war (PoWs) and soldiers after the Japanese surrender, for the rest of the year. Implacable returned home in 1946 and became the Home Fleet's deck-landing training carrier, a role that lasted until 1950. She briefly served as flagship of the Home Fleet in 1950. During this time she participated in many exercises and made a number of port visits in Western Europe. She was placed in reserve in 1950 and converted into a training ship in 1952, and served as flagship of the Home Fleet Training Squadron. The ship was considered for a major modernisation in 1951–1952, but this was rejected as too expensive and time-consuming. Implacable was decommissioned in 1954 and sold for scrap the following year.
HMS Perseus was a Colossus-class light fleet aircraft carrier built for the Royal Navy during World War II. The ship was initially named HMS Edgar, but she was renamed in 1944 when the Admiralty decided to convert her into an aircraft maintenance carrier. She was completed in 1945, after the end of World War II, and she made a trip to Australia late in the year. Upon her return to the UK in early 1946, Perseus was placed in reserve. The ship was recommissioned in 1950 to serve as the trials ship for the steam catapult then under development. Over 1,600 test launches were conducted before the catapult was removed in 1952 and she was converted for use as a ferry carrier to transport aircraft, troops and equipment overseas. She was reduced to reserve again in 1954 and sold for scrap in 1958.
The Courageous class, sometimes called the Glorious class, was the first multi-ship class of aircraft carriers to serve with the Royal Navy. The three ships—Furious, Courageous and Glorious—were originally laid down as Courageous-class battlecruisers as part of the Baltic Project during the First World War. While very fast, their minimal armour and few guns limited their long-term utility in the post-war Royal Navy, and they were laid up after the war. They were considered capital ships by the terms of the 1922 Washington Naval Treaty and were included in the total amount of tonnage allowed to the Royal Navy. Rather than scrap them, the Navy decided to convert them to aircraft carriers as permitted under the Treaty.
HMS Courageous was the lead ship of her class of three battlecruisers built for the Royal Navy in the First World War. Designed to support the Baltic Project championed by First Sea Lord John Fisher, the ship was very lightly armoured and armed with only a few heavy guns. Courageous was completed in late 1916 and spent the war patrolling the North Sea. She participated in the Second Battle of Heligoland Bight in November 1917 and was present when the German High Seas Fleet surrendered a year later.
HMS Argus was a British aircraft carrier that served in the Royal Navy from 1918 to 1944. She was converted from an ocean liner that was under construction when the First World War began and became the first aircraft carrier with a full-length flight deck that allowed wheeled aircraft to take off and land. After commissioning, the ship was involved for several years in the development of the optimum design for other aircraft carriers. Argus also evaluated various types of arresting gear, general procedures needed to operate a number of aircraft in concert and fleet tactics. The ship was too top-heavy as originally built, and had to be modified to improve her stability in the mid-1920s. She spent one brief deployment on the China Station in the late 1920s before being placed in reserve for budgetary reasons.
HMS Eagle was an early aircraft carrier of the Royal Navy. Ordered by Chile during the South American dreadnought race as the Almirante Latorre-class battleship Almirante Cochrane, she was laid down before World War I. In early 1918 she was purchased by Britain for conversion to an aircraft carrier; this work was finished in 1924. Her completion was delayed by labour troubles and the possibility that she might be repurchased by Chile for reconversion into a battleship, as well as the need for comparative trials to determine the optimum layout for aircraft carriers. The ship was initially assigned to the Mediterranean Fleet and then later to the China Station, spending very little time in home waters other than for periodic refits.
HMS Unicorn was an aircraft repair ship and light aircraft carrier built for the Royal Navy in the late 1930s. She was completed during World War II and provided air cover over the amphibious landing at Salerno, Italy, in September 1943. The ship was transferred to the Eastern Fleet in the Indian Ocean at the end of the year. Unicorn supported the aircraft carriers of the fleet on their operations until the British Pacific Fleet (BPF) was formed in November 1944. She was transferred to Australia in early 1945 to support the BPF's operations during Operation Iceberg, the Allied invasion of Okinawa in May. To shorten the time required to replenish the BPF's carriers, the ship was based in the Admiralty Islands and in the Philippine Islands until the Japanese surrender in August. Unicorn was decommissioned and placed in reserve when she returned to the UK in January 1946.
HMS Vindictive was a warship built during the First World War for the Royal Navy (RN). Originally designed as a Hawkins-class heavy cruiser and laid down under the name Cavendish, she was converted into an aircraft carrier while still being built. Renamed in 1918, she was completed a few weeks before the end of the war and saw no active service with the Grand Fleet. The following year she participated in the British campaign in the Baltic against the Bolsheviks, during which her aircraft made numerous attacks against the naval base at Kronstadt. Vindictive returned home at the end of the year and was placed in reserve for several years before her flight decks were removed and she was reconverted back into a cruiser. The ship retained her aircraft hangar and conducted trials with an aircraft catapult before she was sent to the China Station in 1926. A year after her return in 1928, she was again placed in reserve.
The Malta-class aircraft carrier was a British large aircraft carrier design of World War II. Four ships were ordered in 1943 for the Royal Navy, but changing tactical concepts, based on American experience in the Pacific War, caused repeated changes to the design, which was not completed before the end of the war. All four ships were cancelled in 1945 before they were laid down.
HMS Riviera was a seaplane tender which served in the Royal Navy (RN) during the First and Second World Wars. Converted from the cross-Channel packet ship SS Riviera, she was initially fitted with temporary hangars for three seaplanes for aerial reconnaissance and bombing missions in the North Sea. She participated in the unsuccessful Cuxhaven Raid in late 1914 before she began a more thorough conversion in 1915 that increased her capacity to four aircraft. Riviera and her aircraft then spent several years spotting for British warships bombarding the Belgian coast and making unsuccessful attacks on targets in Germany. She was transferred to the Mediterranean in 1918 and returned to her owners the following year.
HMS Nubian was a Tribal-class destroyer of the Royal Navy that saw much distinguished service in World War II. She won 13 battle honours, a record only exceeded by one other ship, and matched by two others.
HMS Bedouin was a Tribal-class destroyer of the British Royal Navy that saw service in World War II.
HMS Wessex was one of eight W-class destroyers built for the Royal Navy during World War II. Completed in 1944, the ship spent most of the war assigned to the Eastern and Pacific Fleets. She screened British aircraft carriers as their aircraft attacked targets in the Japanese-occupied Nicobar Islands, the Dutch East Indies and Okinawa.
HMS Acheron was an A-class destroyer of the Royal Navy. She served during the Second World War in Home waters and off the Norwegian coast, before becoming an early war loss when she sank after hitting a mine off the Isle of Wight on 17 December 1940. The wreck site is designated under the Protection of Military Remains Act 1986.
The Royal Navy built three aircraft maintenance carriers for its Fleet Air Arm before and during World War II. The Abyssinia Crisis of 1934–35 demonstrated to the Admiralty that it needed a depot ship to support the aircraft carriers in active service, just like submarine and destroyer tenders supported those types. Begun just before the start of World War II in 1939, HMS Unicorn was the first ship built in any navy that could "carry out the full range of aircraft maintenance and repair work in addition to the ability to operate aircraft from the flight deck". Unicorn proved the value of the concept and two similar support ships, Perseus and Pioneer were converted into aircraft maintenance ships by modifying light carriers while still under construction. Unlike Unicorn, neither Pioneer nor Perseus were able to land aircraft; they had to be craned aboard.
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