HMS Vindex (D15)
Encyclopedia
HMS Vindex (D15) was a of the 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...

 that saw service during the Second World War
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...

. She was built at Swan Hunter
Swan Hunter
Swan Hunter, formerly known as "Swan Hunter & Wigham Richardson", was one of the best known shipbuilding companies in the world. Based in Wallsend, Tyne and Wear, the company was responsible for some of the greatest ships of the early 20th century — most famously, the RMS Mauretania which...

 shipyards in Newcastle upon Tyne
Newcastle upon Tyne
Newcastle upon Tyne is a city and metropolitan borough of Tyne and Wear, in North East England. Historically a part of Northumberland, it is situated on the north bank of the River Tyne...

. When construction started in 1942 she was intended as a merchant ship, but was completed and launched as an escort carrier, entering service at the end of 1943.

Vindex operated escorting convoys and doing anti-submarine work in the Atlantic and Arctic
Arctic convoys of World War II
The Arctic convoys of World War II travelled from the United Kingdom and North America to the northern ports of the Soviet Union—Arkhangelsk and Murmansk. There were 78 convoys between August 1941 and May 1945...

 theatres. Her 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...

 aircraft were involved in the sinking of four U-boat
U-boat
U-boat is the anglicized version of the German word U-Boot , itself an abbreviation of Unterseeboot , and refers to military submarines operated by Germany, particularly in World War I and World War II...

s during her service. She survived the war, and immediately afterwards served in the Far East
Far East
The Far East is an English term mostly describing East Asia and Southeast Asia, with South Asia sometimes also included for economic and cultural reasons.The term came into use in European geopolitical discourse in the 19th century,...

 transporting men and material to and from Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. In 1947, she was decommissioned and sold for commercial use, to Port Line and renamed Port Vindex. In 1971, she was scrapped in Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

.

Design and description

The s were a class of three escort carriers built for the Royal Navy during the Second World War. Escort carriers were designed to protect convoys of merchant ships from U-boat and aircraft attack. Following the successful conversion and operation of HMS Activity
HMS Activity
HMS Activity was an escort carrier that served with the Royal Navy of the United Kingdom during the Second World War. After the war, she was sold into merchant service as the MV Breconshire, serving for over 20 years until scrapped in 1967....

, the Admiralty
Admiralty
The Admiralty was formerly the authority in the Kingdom of England, and later in the United Kingdom, responsible for the command of the Royal Navy...

 decided to take over three more
merchant ships while they were still under construction and convert them into escort carriers. The three ships chosen were being built at three different shipyards Harland and Wolff
Harland and Wolff
Harland and Wolff Heavy Industries is a Northern Irish heavy industrial company, specialising in shipbuilding and offshore construction, located in Belfast, Northern Ireland....

 in Northern Ireland
Northern Ireland
Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

, Swan Hunter
Swan Hunter
Swan Hunter, formerly known as "Swan Hunter & Wigham Richardson", was one of the best known shipbuilding companies in the world. Based in Wallsend, Tyne and Wear, the company was responsible for some of the greatest ships of the early 20th century — most famously, the RMS Mauretania which...

 in 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 John Brown & Company
John Brown & Company
John Brown and Company of Clydebank was a pre-eminent Scottish marine engineering and shipbuilding firm, responsible for building many notable and world-famous ships, such as the , the , the , the , the , and the...

 in Scotland
Scotland
Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. The prototype was built by John Brown who supplied the other two companies with copies of the plans. The three ships were supposed to be identical but in reality they were all slightly different.

HMS Vindex was launched on 4 May 1943 and completed on 3 December 1943. She had a complement of 700 men and displaced 13455 LT (13,671 t). Her other dimensions were a length of 524 ft (159.7 m), a beam
Beam (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 68 in 6 in (20.88 m) and a draught of 21 ft (6.4 m). Her aircraft and her aircraft facilities included a 495 ft (150.9 m) flight deck, a 231 by 61 ft (70.4 by 18.6 m) hangar, six arrestor wires, and a 45 by 34 ft (13.7 by 10.4 m) aircraft lift.

She had a traditional rivet
Rivet
A rivet is a permanent mechanical fastener. Before being installed a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck-tail. On installation the rivet is placed in a punched or pre-drilled hole, and the tail is upset, or bucked A rivet...

ted hull, steel flight decks and a closed hangar. Propulsion provided by diesel engines connected to two shafts giving 11000 hp, which could propel the ship at 17 kn (20.7 mph; 33.3 km/h). Her armaments concentrated on anti-aircraft (AA) defence and comprised two 4 in (101.6 mm)
QF 4 inch Mk V naval gun
The QF 4 inch Mk V gun was a Royal Navy gun of World War I which was adapted on HA mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.-Naval service:...

 dual purpose gun
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...

s on a twin mount, sixteen 20 mm (0.78740157480315 in)
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...

 autocannon
Autocannon
An autocannon or automatic cannon is a rapid-fire projectile weapon firing a shell as opposed to the bullet fired by a machine gun. Autocannons often have a larger caliber than a machine gun . Usually, autocannons are smaller than a field gun or other artillery, and are mechanically loaded for a...

s on eight twin mounts and sixteen 2-pounder "Pom Pom" gun
QF 2 pounder naval gun
The 2-pounder gun, officially designated the QF 2-pounder and universally known as the pom-pom, was a 1.575 inch British autocannon, used famously as an anti-aircraft gun by the Royal Navy. The name came from the sound that the original models make when firing...

s on four quadruple mounts. Aircraft assigned were either anti-submarine
Anti-submarine warfare
Anti-submarine warfare is a branch of naval warfare that uses surface warships, aircraft, or other submarines to find, track and deter, damage or destroy enemy submarines....

 or 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, which could be made up of a mixture of Hawker Sea Hurricanes, Grumman Wildcats or 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...

.

Service history

Vindex was commissioned in December 1943, and moved to Gourock
Gourock
Gourock is a town falling within the Inverclyde council area and formerly forming a burgh of the historic county of Renfrewshire in the west central Lowlands of Scotland. It has in the past functioned as a seaside resort on the Firth of Clyde...

 for working up. By this stage of the war, the Royal Navy had enough escort carriers available not only to double them up on a convoy escort but to permanently detach one to work with a "hunter killer group" operating outside the convoy system. The 2nd Escort Group still under the command of Captain
Captain (naval)
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The NATO rank code is OF-5, equivalent to an army full colonel....

 Frederic John Walker
Frederic John Walker
Captain Frederic John Walker, CB, DSO and three Bars, RN was a British Royal Navy officer noted for his exploits during World War II...

 was the group chosen with Vindex as the carrier. As she would not be supported by another carrier Vindexs air group was formed from the experienced 825 Naval Air Squadron
825 Naval Air Squadron
825 Naval Air Squadron was a Royal Navy Fleet Air Arm carrier-based squadron formed on 8 October 1934 from the aircraft and personnel of 824 Naval Air Squadron...

, with a complement of 12 Fairey Swordfish Mk IIs and six Sea Hurricanes IICs. Even though there were 12 Swordfish on board they had only eight crews so the Sea Hurricanes carried out some of the daylight anti-submarine patrols. The Sea Hurricanes had been fitted with four racks for the same RP-3
RP-3
The RP-3 , was a British rocket used in the Second World War. Though primarily an air-to-ground weapon, it saw limited use in other roles. Its 60 lb warhead gave rise to the alternative name of the "60 lb rocket"; the 25 lb solid-shot armour piercing variant was referred to as the "25 lb rocket"...

 rockets used by the Swordfish to attack submarines.

Leaving Lough Foyle
Lough Foyle
Lough Foyle, sometimes Loch Foyle , is the estuary of the River Foyle in Ulster. It starts where the Foyle leaves Derry. It separates the Inishowen Peninsula in County Donegal, Republic of Ireland from County Londonderry in Northern Ireland.-Transport:...

 in Northern Ireland
Northern Ireland
Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

 on 9 March 1944, the 2nd Escort Group moved to the area believed to hold the highest concentration of U-boats. On the night of 12 March, Swordfish on patrol had 28 contacts on their air to surface vessel radar (ASV). Their first attack was unsuccessful dropping two depth charge
Depth charge
A depth charge is an anti-submarine warfare weapon intended to destroy or cripple a target submarine by the shock of exploding near it. Most use explosives and a fuze set to go off at a preselected depth in the ocean. Depth charges can be dropped by either surface ships, patrol aircraft, or from...

s that failed to explode believed to be caused by faulty safety clips, during the attack the rear gunner in the Swordfish was killed by the U-boats anti-aircraft guns. The depth charges dropped short on a second attack and failed to explode on a third attack during the same night. On the night of 15 March two Swordfish got an ASV contact ahead of the escort group. Unable to see anything in the darkness they dropped flare
Flare (pyrotechnic)
A flare, also sometimes called a fusee, is a type of pyrotechnic that produces a brilliant light or intense heat without an explosion. Flares are used for signalling, illumination, or defensive countermeasures in civilian and military applications...

s and sea markers over the location. When the escort group arrived they picked up a contact on their ASDIC
Sonar
Sonar is a technique that uses sound propagation to navigate, communicate with or detect other vessels...

 and the was sunk. Weather conditions were still not perfect for flying and in the following days, one Swordfish returning from a night patrol landed in the sea alongside the carrier, the crew were reported missing believed killed. A pitching deck caused one Swordfish to crash into the sea on take-off and engine failure caused the crash of another Swordfish. One Swordfish clipped the island superstructure losing 4 ft (1.2 m) off both wing tips when taking off. The pilot managed to get the aircraft into the air circled around jettisoning his depth charges and landed again without mishap. Landing on the heaving deck was just as dangerous, two Sea Hurricanes and two Swordfish missed the arrestor wires and ended up crashing into the safety barriers.

On 24 March, with its engine shot up and crew injured a Swordfish attempted to land back on Vindex. It crash landed onto the flight deck coming to a stop 8 ft (2.4 m) from the end of the flight deck. Leaking petrol set the wreckage on fire, the crew were rescued but the fire exploded one of two depth charges stuck on their racks, blowing a 8 by 4 ft (2.4 by 1.2 m) hole in the flight deck. After 16 days at sea, Vindex returned to port. With two days flying lost because of the weather conditions, the Swordfish had amassed a creditable 275 flying hours and 122 deck landings by day and night. The Sea Hurricanes contributed another 47 hours flying and 39 deck landings.
At the end of April 1944, Vindex joined the 5th Escort Group. On 6 May, a patrolling Swordfish was contacted by two of the escort frigate
Frigate
A frigate is any of several types of warship, the term having been used for ships of various sizes and roles over the last few centuries.In the 17th century, the term was used for any warship built for speed and maneuverability, the description often used being "frigate-built"...

s reporting they were in contact with a submerged U-boat. The frigates carried out a depth charge attack and forced to the surface. Despite anti-aircraft fire from the U-boat, the Swordfish dropped two of its depth charges which broke the submarine in half. Flying became dangerous in the heavy seas and poor visibility. One Sea Hurricane was damaged beyond repair after a serious crash into the safety barrier and another crashed into the sea with the loss of the pilot. The Swordfish crews fared little better three aircraft and one crew were lost during the same period. On 9 May, Vindexs aircraft lift broke down with a burnt out motor, the crew had to resort to manually cranking the lift up of down taking an hour to go each way. They eventually repaired the lift by moving the capstan
Capstan (nautical)
A capstan is a vertical-axled rotating machine developed for use on sailing ships to apply force to ropes, cables, and hawsers. The principle is similar to that of the windlass, which has a horizontal axle.- History :...

 motor through holes burned into the bulkheads. During the second deployment by Vindex her aircraft had flown over 400 sorties in 13 days, but the strain on the aircrews began to show and only 35 per cent of the original Swordfish crews were still with the ship when they returned to port. It was during this second deployment that one of the ships officers, Sub-Lieutenant
Sub-Lieutenant
Sub-lieutenant is a military rank. It is normally a junior officer rank.In many navies, a sub-lieutenant is a naval commissioned or subordinate officer, ranking below a lieutenant. In the Royal Navy the rank of sub-lieutenant is equivalent to the rank of lieutenant in the British Army and of...

 J.M. Morrison invented a blind landing system soon to be used on all the Royal Navy carriers. He modified a ASV radar set which was placed on the flight deck. The system employed the Air Directing Officer guiding aircraft to within 5 mi (4.3 nmi; 8 km) of the ship. They could then be picked up on the ASV and brought in astern of the carrier at a height of 75 ft (22.9 m).

On 15 August, Vindex and joined convoy JW 59 the first Arctic convoy to Russia
Arctic convoys of World War II
The Arctic convoys of World War II travelled from the United Kingdom and North America to the northern ports of the Soviet Union—Arkhangelsk and Murmansk. There were 78 convoys between August 1941 and May 1945...

 of the year. Vindex still had 825 Naval Air Squadron on board but they were now equipped with the Swordfish Mk III. This version of the biplane had a Rocket-assisted take off system (RATOG) and a new ASV radar in a dome on the underside of the aircraft. The extra weight reduced the crew to two, doing away with the Telegraphist-Air-Gunner. There was a full complement of 12 Swordfish and eight Sea Hurricanes (two unassembled spares) on board. The larger Striker had 12 Swordfish and 12 Grumman Wildcats. The Swordfish claimed their first success on 22 August, sinking , followed by on 24 August . Her rocket armed Sea Hurricanes also claimed a U-boat damaged. Neither convoy JW 59 or the returning RA 59A lost any ships.
Russian convoy JW 61 which sailed on 20 October had for the first time three escort carriers, Vindex, and . This was a large convoy of 62 merchant ships with a large escort group. Vice-Admiral Frederick Dalrymple-Hamilton
Frederick Dalrymple-Hamilton
Admiral Sir Frederick Hew George Dalrymple-Hamilton KCB was a British naval officer who served in World War I and World War II.-Naval career:...

 was in command, with Vindex as his flagship
Flagship
A flagship is a vessel used by the commanding officer of a group of naval ships, reflecting the custom of its commander, characteristically a flag officer, flying a distinguishing flag...

. Nairana had 835 Naval Air Squadron with 14 Swordfish IIIs and six Wildcat VIs on board for what would be their first Arctic convoy. Vindex had a re-formed 811 Naval Air Squadron with the same aircraft types and numbers. The third carrier—Tracker—had 10 Grumman Avengers and six Wildcats. The short Arctic days meant that most flying would be at night. The three carriers worked a system eight hour watches, one would be the duty carrier with its aircraft aloft, the second would be on standby with its aircraft arranged on deck ready to scramble
Scrambling (military)
In military aviation scrambling or a scramble is the act of quickly getting fighter aircraft airborne to intercept hostile aircraft.-Historical use:...

 and the third resting. The two Swordfish equipped squadrons because of their better night flying equipment shared the night time hours while Trackers Avengers worked the daylight hours. The strength of the convoys escort may have deterred the Germans and no U-boats or reconnaissance aircraft were detected, until the convoy approached the Kola Inlet, even then the heavy escort prevented any attack and the convoy reached port safely.

The return convoy RA 61 was equally as successful with only one frigate damaged by a torpedo just after leaving Kola and Vindex had to take avoiding action after detecting a torpedo coming towards her. Vindexs inexperienced squadron lost a Wildcat pilot when his plane crashed into the sea attempting to land back on board. A Swordfish crashed into the sea following a rocket assisted take off with the loss of the two man crew. Another Swordfish crashed on landing with the aircraft initially hung over the ships side from its tail hook. When the hook gave way it crashed into the sea and only the pilot was rescued. The squadron in total lost or so severely damaged eight Swordfish and two Wildcats that they could not fly again.

With the war over there was no further need for escort carriers. Vindex was sent out to the Far East
Far East
The Far East is an English term mostly describing East Asia and Southeast Asia, with South Asia sometimes also included for economic and cultural reasons.The term came into use in European geopolitical discourse in the 19th century,...

 as the flagship for Rear Admiral
Rear Admiral
Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the "admiral" ranks, which are also sometimes referred to as "flag officers" or "flag ranks"...

 Cunningham Graham. She was used to repatriate prisoners of war from Hong Kong back to Australia and Britain. On her return to Britain, she was placed in reserve and bought by her original owners the Port Line company. They renamed her Port Vindex keeping part of her name to honour her wartime service and converted into a refrigerated cargo ship on the United Kingdom to Australia route. At the end of her merchant career, she was scrapped in August 1971 at Kaohsiung
Kaohsiung
Kaohsiung is a city located in southwestern Taiwan, facing the Taiwan Strait on the west. Kaohsiung, officially named Kaohsiung City, is divided into thirty-eight districts. The city is one of five special municipalities of the Republic of China...

in Taiwan.

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