HMS Attacker (D02) was an American-built escort carrier that served with the Royal Navy during the Second World War.
Converted from a merchantman under construction, she was commissioned by the United States Navy on 30 September 1942, as USS Barnes (CVE-7), a ; she was decommissioned and transferred to the Royal Navy on the same day under the Lend-Lease agreement.
Attacker served throughout the war, first as a convoy escort in the Battle of the Atlantic. After further conversion by the Royal Navy in October 1943, into an assault carrier, the ship was active in the Mediterranean, and later the war in the Pacific. In late August 1945, Attacker witnessed the Japanese surrender of Penang, in Malaya, as part of Operation Jurist.
Construction The merchantman Steel Artisan was laid down on 17 April 1941, under a Maritime Commission contract, MC hull 171, by Western Pipe and Steel Company of San Francisco. She was renamed Barnes (AVG-7) on 3 September 1941, and launched on 27 September 1941. Barnes was towed to the Mare Island Navy Yard on 10 October 1941, for conversion to an escort carrier. On 1 March 1942, she was assigned to be transferred to the British under Lend-Lease. She was redesignated BACV-7 on 20 August 1942. Barnes was commissioned into the US Navy on 30 September 1942, and decommissioned and transferred to the Royal Navy on the same day. On 7 October 1942, she was commissioned into the Royal Navy as under the command of Captain Shirley-Rollison, RN.
Design and description Attacker was the lead ship in what became the Royal Navy's of 11 ships; one of 38 escort carriers built in the United States for the Royal Navy during the Second World War. The Western Pipe & Steel shipyards built three other ships in the class. Once completed she was supplied under the terms of Lend-Lease agreement to the Royal Navy. There was a ships complement of 646 men, who lived in crew accommodation that was significantly different from the arrangements that were normal for the Royal Navy at the time. The separate messes no longer had to prepare their own food, as everything was cooked in the galley and served cafeteria style in a central dining area. They were also equipped with a modern laundry and a barber shop. The traditional hammocks were replaced by three-tier bunk-beds, 18 to a cabin, which were hinged and could be tied up to provide extra space when not in use.
Attacker had an overall length of , a beam of and a draught of . She displaced at full load. Power was provided by two boilers feeding steam to a turbine driving one shaft, giving , which could propel the ship at .
She had the capacity for up to 24 aircraft which could be a mixture of anti-submarine and fighter aircraft; the British Hawker Sea Hurricane and Supermarine Seafire naval fighters, Fairey Swordfish torpedo bomber or the American-supplied Grumman Martlet and Vought F4U Corsair fighters or Grumman Avenger torpedo bomber could be carried. The exact composition of the embarked squadrons depended upon the mission. Some squadrons were composite squadrons for convoy defence and would be equipped with both anti-submarine and fighter aircraft, while other squadrons working in a strike carrier role would only be equipped with fighter aircraft. Aircraft facilities were a small combined bridge–flight control on the starboard side and above the flight deck, two aircraft lifts , and nine arrestor wires. Aircraft could be housed in the hangar below the flight deck.
The ships armament concentrated on anti-aircraft (AA) defence and comprised two QF MK V dual purpose guns in single mounts, eight Bofors guns in twin mounts and ten Oerlikon cannons in single and eight in twin mounts.
Attacker was designed to accompany other ships forming the escort for convoys. The anti-submarine aircraft employed were initially the Fairey Swordfish and later the Grumman Avenger, which could be armed with torpedoes, depth charges, bombs or RP-3 rocket projectiles. As well as carrying out their own attacks on U-Boats, these aircraft identified their locations for the convoy's escorts to mount an attack. Typically anti-submarine patrols would be flown between dawn and dusk. One aircraft would fly about ahead of the convoy, while another patrolled astern. Patrols would last between two and three hours, using both radar and visual observation in their search for U-Boats. Attacker also had a secondary role, providing oil and provisions for her accompanying destroyers. This could be a lengthy process and was done on the move. It took 40 minutes from firing a line across to the destroyer to start pumping oil, while it took another two hours to pump 98 tons of oil and a further 35 minutes to disconnect the hose pipe and secure the equipment.
Service history On 12 November 1942, Attacker started her flying and sea trials off San Francisco. She had embarked four Swordfish I torpedo bombers of 838 squadron from Naval Air Station Alameda. After completion of her trials, and being qualified for duty, she set sail for Balboa, on 12 December, with 838 squadron. She passed through the Panama Canal, and arrived at Cristobal, on 22 December. She later sailed for NAS Quonset Point, where she disembarked 838 squadron, 1 January 1943. Attacker was in Chesapeake Bay, during January, for a period of Deck Landing Training (DLT) with Martlets from 882 squadron, 896 squadron, and 898 squadron and Swordfish from 838 and 840 squadrons.
On 2 March 1943, Attacker set sail for Curacao, with 838 squadron and six Swordfish from 840 squadron, for escort duty with Convoy CU 1. Attackers first active service in the Atlantic was to provided anti submarine cover during her crossing from the United States to Great Britain. She set sail from Curacao, on 20 March 1943, arriving in Clyde, on 1 April 1943, and Liverpool the following day. On 4 April 1943, in Liverpool, she started two months of modification during which radar was fitted and US guns were changed for British ones. On 2 August, she sailed, along with her sister ships , , and for Gibraltar, with aircraft from 886 (Seafire fighters and Swordfish torpedo bombers) and 879 (Seafires) squadrons on board.
Mediterranean Operation Avalanche Attacker transferred to the Mediterranean theatre reaching Malta, 7 September 1943 as part of "Task Force 88", consisting of the escort carriers Battler, Hunter, Stalker, the aircraft repair ship , the cruisers , , , the destroyers , , , , , and the Polish destroyers and to providing cover for the Allied amphibious landings on mainland Italy, near Salerno, in Operation Avalanche. From 9 to 12 September, the five carriers launched a total of 713 sorties, with Attacker sending out 132. Seventy-five patrol sorties were carried out by 879 Naval Air Squadron (NAS) while 57 were flown by 886 NAS, with no aircraft lost to enemy action. Attacker joined Convoy MK 24, along with Hunter and Stalker, to escort it from Gibraltar to the Clyde, from 17 September to 6 October 1943. She then sailed for Rosyth Naval Dockyard, on 7 October, for conversion to an assault carrier, arriving 10 October.
Conversion
With her upgrades finished in December 1943, Attacker again embarked Seafires of 879 and 886 squadrons on 29 December, for training from January to February 1944, in her new role of providing air support for major military landings until shore based air strips became operational. Operation Avalanche had proven a need for this strategy. She returned to Liverpool, on 9 February, for further repairs.
Attacker, along with Hunter and Stalker, were ordered to Scapa Flow, arriving on 5 May 1944, for participation in Operation Hoops scheduled for 8 May. However, before the operation was launched changes were made and the escort carriers , , and were instead allocated and the three carriers set sail for Belfast, on 7 May, and arrived the next day.
On 14 May, the three ships set out for the Mediterranean as additional escorts for the Convoy KMS 51, which had departed Liverpool, the previous day. Attacker detached from the convoy on 19 May, and put into Gibraltar, 24 May. On 2 June, she moved from her berth on the North Mole to the inside of the Detached Mole, where on the night of 4 June, while silhouetted behind the mole, an enemy submarine launched a torpedo at her. The torpedo detonated on the outside of the mole which caused to serious damage to Attacker. On June 6, she and Hunter sailed for Mers El Kébir, providing air cover for Convoy KMS 52.
Operation Dragoon
During June 1944, Attacker provided air cover for several convoys travelling in the Western Mediterranean. On 23 July, she sailed for Malta, in company with , , Searcher and Emperor, anchoring in Dockyard Creek on 25 July, to prepare for Operation Dragoon.
Attacker joined Carrier Force TF88.1 for Operation Dragoon. The force exercised off Malta, between 2 and 12 August, with the invasion starting in the early hours of 15 August. On 19 August, TF88.1 withdrew to Maddalena, Sardinia, for refueling and rearming. They took up position south of Marseille, on 21 August, until 23 August, when they returned to Maddalena, again to refuel and rearm. TF88.1 was released on 28 August. Attacker had completed 106 ground strike, bombardment spotting for , tactical reconnaissance missions and 120 bombing sorties. She left Maddalena, for Alexandria, on 29 August.
Operations Outing I, Outing II, Manna Attacker set sail on 14 September 1944, to participate in Operation Outing I, an operation designed to delay German troop movements in the Dodecanese Islands. She arrived 15 September, and relieved Hunter. She returned to Alexandria, on 20 September, to resupply, and returned to the Dodecanese Islands, on 27 September, for Operation Outing II. She again returned to Alexandria, 5 October, for further refuel and rearm. Hunter was again relieved by Attacker in the eastern Aegean Sea, on 11 October, for Operation Manna. Returning 30 October, to Alexandria.
Attacker, along with Hunter and Stalker, set sail for the United Kingdom, on 31 October 1944, having been picked for service with the East Indies Fleet. After a brief stopover at Malta, on 3 November, the three carriers reached Plymouth, 10 November, for a short period of defect rectifications at the Devonport Naval Dockyard and the opportunity for their crews to go on home leave. On 29 November, the three set out for the Mediterranean, to undergo refits in transit to the Pacific. They arrived in Gibraltar, on 3 December, where Stalker was refit with Hunter proceeding to Malta, and Attacker proceeding to Taranto, Italy, their refits.
After completing refit trials Attacker set sail on 1 April 1945, for Alexandria. She embarked 879 squadron on 14 April, then proceeded through the Suez Canal, to Aden, and then Ceylon, arriving 29 April.
Pacific War Attacker was assigned to 21 ACS, but due to defects discovered during her transit to the Pacific Theater, she was deemed unfit for operation. During May, and part of June, Attacker and Hunter were assigned to aircraft transport duties between India and South Africa to Ceylon.
Operation Carson