HMS Griffin (H31) was a G-class

G and H class destroyer

The G- and H-class destroyers were a class of twenty-four destroyers of the Royal Navy launched in 1935–1939. They served in World War II and sixteen were lost, with a seventeenth being written off as a constructive total loss...

 destroyer

Destroyer

In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

, built for 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...

 in the mid-1930s. 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...

, the ship participated in the Norwegian Campaign

Norwegian Campaign

The Norwegian Campaign was a military campaign that was fought in Norway during the Second World War between the Allies and Germany, after the latter's invasion of the country. In April 1940, the United Kingdom and France came to Norway's aid with an expeditionary force...

 of April–May 1940 and the Battle of Dakar

Battle of Dakar

The Battle of Dakar, also known as Operation Menace, was an unsuccessful attempt in September 1940 by the Allies to capture the strategic port of Dakar in French West Africa , which was under Vichy French control, and to install the Free French under General Charles de Gaulle there.-Background:At...

 in September before being transferred to the Mediterranean Fleet

Mediterranean Fleet

Several countries have or have had a Mediterranean Fleet in their navy. See:* Mediterranean Fleet * French Mediterranean Fleet* Mediterranean Squadron * United States Sixth Fleet...

 in November. The ship generally escorted the larger ships of the Mediterranean Fleet as they protected convoy

Convoy

A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support, though it may also be used in a non-military sense, for example when driving through remote areas.-Age of Sail:Naval...

s against attacks from the Italian Fleet. Griffin participated in the Battle of Cape Matapan

Battle of Cape Matapan

The Battle of Cape Matapan was a Second World War naval battle fought from 27–29 March 1941. The cape is on the southwest coast of Greece's Peloponnesian peninsula...

 in March 1941 and the evacuations of Greece

Battle of Greece

The Battle of Greece is the common name for the invasion and conquest of Greece by Nazi Germany in April 1941. Greece was supported by British Commonwealth forces, while the Germans' Axis allies Italy and Bulgaria played secondary roles...

 and Crete

Battle of Crete

The Battle of Crete was a battle during World War II on the Greek island of Crete. It began on the morning of 20 May 1941, when Nazi Germany launched an airborne invasion of Crete under the code-name Unternehmen Merkur...

 in April–May 1941. In June the ship participated in the Syria-Lebanon Campaign

Syria-Lebanon campaign

The Syria–Lebanon campaign, also known as Operation Exporter, was the Allied invasion of Vichy French-controlled Syria and Lebanon, in June–July 1941, during World War II. Time Magazine referred to the fighting as a "mixed show" while it was taking place and the campaign remains little known, even...

 and was escorting convoys and the larger ships of the Mediterranean Fleet until she was transferred to the Eastern Fleet in March 1942.

Griffin did not see any action during the Japanese Indian Ocean raid in April, but was escorting convoys for most of her time in the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

. In June, the ship returned to the Mediterranean to escort another convoy to Malta in Operation Vigorous

Operation Vigorous

Operation Vigorous was a World War II Allied operation to deliver a supply convoy that sailed from Haifa and Port Said on 12 June 1942 to Malta. The convoy encountered heavy Axis air and sea opposition and returned to Alexandria on 16 June....

. Beginning in November 1942, she was converted to an escort destroyer in 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...

 and was transferred to the Royal Canadian Navy

Royal Canadian Navy

The history of the Royal Canadian Navy goes back to 1910, when the naval force was created as the Naval Service of Canada and renamed a year later by King George V. The Royal Canadian Navy is one of the three environmental commands of the Canadian Forces...

 on 1 March 1943. The ship, now renamed HMCS Ottawa, was assigned to escort convoys in the North Atlantic until she was transferred in May 1944 to protect the forces involved with the Normandy Landings. Working with other destroyers, Ottawa sank three German submarines off the French coast before she returned to Canada for a lengthy refit. After the end of the European war in May 1945 the ship was used to bring Canadian troops until she was paid off

Ship decommissioning

To decommission a ship is to terminate her career in service in the armed forces of her nation. A somber occasion, it has little of the elaborate ceremony of ship commissioning, but carries significant tradition....

 in October 1945. Ottawa was sold for scrap

Ship breaking

Ship breaking or ship demolition is a type of ship disposal involving the breaking up of ships for scrap recycling. Most ships have a lifespan of a few decades before there is so much wear that refitting and repair becomes uneconomical. Ship breaking allows materials from the ship, especially...

 in August 1946.

Description

Griffin displaced 1350 long tons (1,371.7 t) at standard

Displacement (ship)

A ship's displacement is its weight at any given time, generally expressed in metric tons or long tons. The term is often used to mean the ship's weight when it is loaded to its maximum capacity. A number of synonymous terms exist for this maximum weight, such as loaded displacement, full load...

 load and 1883 long tons (1,913.2 t) at deep load. The ship had an overall length of 323 feet (98.5 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 33 feet (10.1 m) and a draught

Draft (hull)

The draft of a ship's hull is the vertical distance between the waterline and the bottom of the hull , with the thickness of the hull included; in the case of not being included the draft outline would be obtained...

 of 12 in 5 in (3.78 m). She was powered by Parsons

Parsons Marine Steam Turbine Company

Parsons Marine Steam Turbine Company was a British engineering company based in Wallsend, North England, on the River Tyne.-History:The company was founded by Charles Algernon Parsons in 1897 with £500,000 of capital, and specialised in building the steam turbine engines that he had invented for...

 geared steam turbine

Steam turbine

A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Its modern manifestation was invented by Sir Charles Parsons in 1884....

s, driving two shafts, which developed a total of 34000 shp and gave a maximum speed of 36 knots (19.6 m/s). Steam for the turbines was provided by three Admiralty 3-drum water-tube boiler

Water-tube boiler

A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes...

s. Griffin carried a maximum of 470 long tons (477.5 t) of fuel oil

Fuel oil

Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...

 that gave her a range of 5530 nautical miles (10,241.6 km) at 15 knots (8.2 m/s). The ship's complement was 137 officers and men in peacetime, but in increased to 146 in wartime.

The ship mounted four 45-calibre

Caliber (artillery)

In artillery, caliber or calibredifference in British English and American English spelling is the internal diameter of a gun barrel, or by extension a relative measure of the length....

 4.7-inch (120 mm) Mark IX guns

4.7 inch QF Mark XII

The 4.7 inch QF Mark IX and Mark XII were 120-mm 45-calibre naval guns which armed the majority of Royal Navy and Commonwealth destroyers in World War II, and were exported to many countries after World War II as the destroyers they were mounted on were sold off.-Description and history:These guns...

 in single mounts. For anti-aircraft

Anti-aircraft warfare

NATO defines air defence as "all measures designed to nullify or reduce the effectiveness of hostile air action." They include ground and air based weapon systems, associated sensor systems, command and control arrangements and passive measures. It may be to protect naval, ground and air forces...

 defence Griffin had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III

Vickers machine gun

Not to be confused with the Vickers light machine gunThe Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled .303 inch machine gun produced by Vickers Limited, originally for the British Army...

 machine gun

Machine gun

A machine gun is a fully automatic mounted or portable firearm, usually designed to fire rounds in quick succession from an ammunition belt or large-capacity magazine, typically at a rate of several hundred rounds per minute....

. She was fitted with two above-water quadruple torpedo tube

Torpedo tube

A torpedo tube is a 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 installed aboard surface vessels...

 mounts for 21 inches (53 cm)

British 21 inch torpedo

There have been several British 21-inch diameter torpedoes used by the Royal Navy since their first development just before the First World War.They were the largest size of torpedo in common use in the RN...

 torpedoes. One 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...

 rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

Beginning in mid-1940, the ship's anti-aircraft armament was increased although when exactly the modifications were made is not known. The rear set of torpedo tubes was replaced by a 3 inches (7.6 cm) (12-pounder)

QF 12 pounder 12 cwt naval gun

The QF 12 pounder 12 cwt gun was a common calibre naval gun introduced in 1894 and used until the middle of the 20th century. It was produced by Armstrong Whitworth, Elswick and used on Royal Navy warships, and exported to allied countries...

 AA gun and the quadruple .50-calibre Vickers mounts were replaced by 20 millimetre (0.78740157480315 in) 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...

 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...

. Two more Oerlikon guns were also added in the forward superstructure.

Service history

Griffin was laid down by Vickers-Armstrongs Naval Construction Works at Barrow-in-Furness

Barrow-in-Furness

Barrow-in-Furness is an industrial town and seaport which forms about half the territory of the wider Borough of Barrow-in-Furness in the county of Cumbria, England. It lies north of Liverpool, northwest of Manchester and southwest from the county town of Carlisle...

 on 20 September 1934, launched on 15 August 1935, and completed on 6 March 1936. Excluding government-furnished equipment like the armament, the ship cost £248,518. Griffin joined her sisters

Sister ship

A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

 and was assigned to the 1st Destroyer Flotilla of the Mediterranean Fleet upon commissioning. She escorted the ocean liner

Ocean liner

An ocean liner is a ship designed to transport people from one seaport to another along regular long-distance maritime routes according to a schedule. Liners may also carry cargo or mail, and may sometimes be used for other purposes .Cargo vessels running to a schedule are sometimes referred to as...

 SS Strathnaver between Malta and Alexandria

Alexandria

Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...

 during the Munich Crisis in September 1938. She then escorted the light cruiser

Light cruiser

A light cruiser is a type of small- or medium-sized warship. The term is a shortening of the phrase "light armored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck...

  on her voyage to Aden

Aden

Aden is a seaport city in Yemen, located by the eastern approach to the Red Sea , some 170 kilometres east of Bab-el-Mandeb. Its population is approximately 800,000. Aden's ancient, natural harbour lies in the crater of an extinct volcano which now forms a peninsula, joined to the mainland by a...

. The ship collided with the target destroyer on 2 February 1939 and her repairs were completed five days later.

World War II, 1939–1942

On 3 September 1939, Griffin was in Alexandria and still assigned to the 1st Destroyer Flotilla. She was then transferred in October for duty in home waters and was rejoined her flotilla at Harwich

Harwich

Harwich is a town in Essex, England and one of the Haven ports, located on the coast with the North Sea to the east. It is in the Tendring district. Nearby places include Felixstowe to the northeast, Ipswich to the northwest, Colchester to the southwest and Clacton-on-Sea to the south...

 in November, where they patrolled the North Sea

North Sea

In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

 and escorted local convoys. The ship rescued survivors from her sister

Sister ship

A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

  after that ship struck a mine

Naval mine

A naval mine is a self-contained explosive device placed in water to destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, an enemy vessel...

 off Harwich on 21 November. She was damaged the same month and was under repair until 6 December. In preparation for the Norwegian Campaign, Griffin was transferred to the Home Fleet at Scapa Flow

Scapa Flow

right|thumb|Scapa Flow viewed from its eastern endScapa Flow is a body of water in the Orkney Islands, Scotland, United Kingdom, sheltered by the islands of Mainland, Graemsay, Burray, South Ronaldsay and Hoy. It is about...

 in April 1940.

The ship escorted the capital ship

Capital ship

The capital ships of a navy are its most important warships; they generally possess the heaviest firepower and armor and are traditionally much larger than other naval vessels...

s of the Home Fleet as they sortied into the North Sea on 7 April and continued that duty for the next several weeks. On 24 April, Griffin and the destroyer captured the German trawler

Naval trawler

A naval trawler is a vessel built along the lines of a fishing trawler but fitted out for naval purposes. Naval trawlers were widely used during the First and Second world wars. Fishing trawlers were particularly suited for many naval requirements because they were robust boats designed to work...

 Schiff 26, bound for Narvik

Narvik

is the third largest city and municipality in Nordland county, Norway by population. Narvik is located on the shores of the Narvik Fjord . The municipality is part of the Ofoten traditional region of North Norway, inside the arctic circle...

 with a cargo that included mines and torpedoes. The ship evacuated British and French troops from Namsos

Namsos campaign

In April and early May, 1940 Namsos and its surrounding area were the scene of heavy fighting between Anglo-French, Polish and Norwegian naval and military forces on the one hand, and German military, naval and air forces on the other...

, and rescued survivors from the destroyer after she was sunk by Junkers Ju 87

Junkers Ju 87

The Junkers Ju 87 or Stuka was a two-man German ground-attack aircraft...

 dive bomber

Dive bomber

A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target reduces the distance the bomb has to fall, which is the primary factor in determining the accuracy of the drop...

s on 3 May. The Stukas also attacked Griffin, without success. Griffin was then transferred to the 13th Destroyer Flotilla of the North Atlantic Command at Gibraltar

Gibraltar

Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

. She escorted the capital ships of Force H

Force H

Force H was a British naval formation during the Second World War. It was formed in 1940 to replace French naval power in the western Mediterranean that had been removed by the French armistice with Nazi Germany....

 during the Battle of Dakar on 23 September, but was not engaged. On 20 October, with the destroyers and , she sank the off Melilla

Melilla

Melilla is a autonomous city of Spain and an exclave on the north coast of Morocco. Melilla, along with the Spanish exclave Ceuta, is one of the two Spanish territories located in mainland Africa...

. Griffin escorted the battleship

Battleship

A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...

  and the cruisers and during Operation Coat in early November as they joined the Mediterranean Fleet. Griffin herself was transferred to the 14th Destroyer Flotilla in Alexandria

Alexandria

Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...

. She participated in the inconclusive Battle of Cape Spartivento

Battle of Cape Spartivento

The Battle of Cape Spartivento, known as the Battle of Cape Teulada in Italy, was a naval battle during the Battle of the Mediterranean in the Second World War...

 on 27 November during Operation Collar.

During Operation Excess

Operation Excess

Operation Excess was a series of supply convoys to Malta, Alexandria and Greece in January 1941.On 6 January, convoy Excess left Gibraltar for Malta and Greece, covered by the Gibraltar based Force H. Simultaneously, the Mediterranean Fleet from Alexandria covered more supply ships from...

, her sister, , struck a mine off Pantellaria on 10 January 1941 and Griffin rescued most of the survivors. In February 1941 she was transferred to the Red Sea

Red Sea

The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

 where she escorted the aircraft carrier

Aircraft carrier

An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

  during the latter's operations in support of the military offensive in Italian Somaliland

East African Campaign (World War II)

The East African Campaign was a series of battles fought in East Africa during World War II by the British Empire, the British Commonwealth of Nations and several allies against the forces of Italy from June 1940 to November 1941....

 ("Operation Canvas"). Griffon escorted the capital ships of the Mediterranean Fleet during the Battle of Cape Matapan on 28/29 March. With her sister , she attacked some of the Italian destroyers, but lost them when they passed through their own smokescreen. On 15 April, Griffin, the Australian destroyer , and the gunboat

Gunboat

A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...

  bombarded Axis positions near Sollum. The ship participated in the evacuation of British and Australian troops from the Greece at the end of April. On 8 May she again escorted the capital ships of the Mediterranean Fleet as they covered a convoy from Alexandria to Malta. During the evacuation of Crete at the end of May, Griffin evacuated 720 men from Souda Bay

Souda Bay

Souda Bay is a bay and natural harbour on the northwest coast of the Greek island of Crete. The bay is about 15 km long and only two to four km wide, and a deep natural harbour. It is formed between the Akrotiri peninsula and Cape Drapano, and runs west to east...

.

During Operation Exporter

Syria-Lebanon campaign

The Syria–Lebanon campaign, also known as Operation Exporter, was the Allied invasion of Vichy French-controlled Syria and Lebanon, in June–July 1941, during World War II. Time Magazine referred to the fighting as a "mixed show" while it was taking place and the campaign remains little known, even...

, the ship escorted the Australian light cruiser as she bombarded Vichy French

Vichy France

Vichy France, Vichy Regime, or Vichy Government, are common terms used to describe the government of France that collaborated with the Axis powers from July 1940 to August 1944. This government succeeded the Third Republic and preceded the Provisional Government of the French Republic...

 positions in Lebanon

Lebanon

Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...

 on 2 July. Griffin escorted convoys to and from Tobruk

Siege of Tobruk

The siege of Tobruk was a confrontation that lasted 240 days between Axis and Allied forces in North Africa during the Western Desert Campaign of the Second World War...

 from July to November. On 25 November she was escorting the battleships of the Mediterranean Fleet when the battleship was torpedoed by . The ship escorted the light cruiser when she bombarded Derna in early December and was transferred to the 2nd Destroyer Flotilla during the month. Griffin escorts convoys to Malta in January and February 1942. until she was transferred to the Eastern Fleet in the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

 in late February. Griffin was assigned to Force A of the fleet during the Indian Ocean raid by the Japanese in early April 1942. The ship returned to the Mediterranean to participate in Operation Vigorous

Operation Vigorous

Operation Vigorous was a World War II Allied operation to deliver a supply convoy that sailed from Haifa and Port Said on 12 June 1942 to Malta. The convoy encountered heavy Axis air and sea opposition and returned to Alexandria on 16 June....

, another convoy from Alexandria to Malta, in June. She returned to the Indian Ocean afterwards and escorted convoys there until ordered home to begin conversion to an escort destroyer in September.

Refit and transfer to Canada, 1942–1946

Work on the conversion began on 2 November in Southampton

Southampton

Southampton is the largest city in the county of Hampshire on the south coast of England, and is situated south-west of London and north-west of Portsmouth. Southampton is a major port and the closest city to the New Forest...

 and included the removal of two 4.7-inch guns and the 12-pounder AA gun, and their replacement with a Hedgehog

Hedgehog (weapon)

The Hedgehog was an anti-submarine weapon developed by the Royal Navy during World War II, that was deployed on convoy escort warships such as destroyers to supplement the depth charge. The weapon worked by firing a number of small spigot mortar bombs from spiked fittings...

 anti-submarine mortar

Anti-submarine mortar

Anti-submarine mortars are artillery pieces deployed on ships for the purpose of sinking submarines by a direct hit with a small explosive charge. They are often larger versions of the mortar used by infantry and fire a projectile in relatively the same manner...

 forward and additional depth charges aft. Type 286 and 271 radar sets were fitted, as well as additional 20 mm Oerlikon AA guns

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...

. While still refitting, on 1 March 1943, Griffin was transferred to the Royal Canadian Navy

Royal Canadian Navy

The history of the Royal Canadian Navy goes back to 1910, when the naval force was created as the Naval Service of Canada and renamed a year later by King George V. The Royal Canadian Navy is one of the three environmental commands of the Canadian Forces...

, and commissioned on 20 March, four days before her conversion was finished. The ship was renamed Ottawa on 10 April to commemorate the destroyer sunk earlier. After working up at Tobermory, she sailed for Canada, and was gifted to the Canadians on 15 June.

HMCS Ottawa (H31) became the senior ship of Escort Group C5 which worked between St. John's, Newfoundland, and Derry

Derry

Derry or Londonderry is the second-biggest city in Northern Ireland and the fourth-biggest city on the island of Ireland. The name Derry is an anglicisation of the Irish name Doire or Doire Cholmcille meaning "oak-wood of Colmcille"...

, 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...

 until May 1944 when she became the senior ship of the 11th Escort Group. The 11th consisted of the destroyers , , , and and were tasked to protect the invasion forces for D-Day. On 6 July 1944, Ottawa, Kootenay, and the British 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"...

, , sank off Beachy Head

Beachy Head

Beachy Head is a chalk headland on the south coast of England, close to the town of Eastbourne in the county of East Sussex, immediately east of the Seven Sisters. The cliff there is the highest chalk sea cliff in Britain, rising to 162 m above sea level. The peak allows views of the south...

, Sussex

Sussex

Sussex , from the Old English Sūþsēaxe , is an historic county in South East England corresponding roughly in area to the ancient Kingdom of Sussex. It is bounded on the north by Surrey, east by Kent, south by the English Channel, and west by Hampshire, and is divided for local government into West...

. Ottawa and Chaudière sank on 16 August near La Rochelle

La Rochelle

La Rochelle is a city in western France and a seaport on the Bay of Biscay, a part of the Atlantic Ocean. It is the capital of the Charente-Maritime department.The city is connected to the Île de Ré by a bridge completed on 19 May 1988...

 and two days later they sank west of Brest

Brest, France

Brest is a city in the Finistère department in Brittany in northwestern France. Located in a sheltered position not far from the western tip of the Breton peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon...

.

Ottawa was refitted in St. John's

St. John's, Newfoundland and Labrador

St. John's is the capital and largest city in Newfoundland and Labrador, and is the oldest English-founded city in North America. It is located on the eastern tip of the Avalon Peninsula on the island of Newfoundland. With a population of 192,326 as of July 1, 2010, the St...

 between 12 October 1944 and 26 February 1945. On 11 March she collided with the minesweeper

Minesweeper (ship)

A minesweeper is a small naval warship designed to counter the threat posed by naval mines. Minesweepers generally detect then neutralize mines in advance of other naval operations.-History:...

  off Halifax and was under repair until 30 April. After the end of the war in May the ship ferried Canadian troops back to Canada until she was paid off on 31 October. Ottawa was sold to the International Iron and Metal Company in August 1946 and subsequently broken up.