HMS Hyperion (H97) was an H-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...

 during the mid-1930s. During the Spanish Civil War

Spanish Civil War

The Spanish Civil WarAlso known as The Crusade among Nationalists, the Fourth Carlist War among Carlists, and The Rebellion or Uprising among Republicans. was a major conflict fought in Spain from 17 July 1936 to 1 April 1939...

 of 1936–1939 the ship enforced the arms blockade imposed by Britain and France on both sides as part of 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...

. During the first few months of 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...

, Hyperion searched for German commerce raiders in the Atlantic Ocean

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...

 and blockaded German merchant ships in neutral harbours until she returned to the British Isles

British Isles

The British Isles are a group of islands off the northwest coast of continental Europe that include the islands of Great Britain and Ireland and over six thousand smaller isles. There are two sovereign states located on the islands: the United Kingdom of Great Britain and Northern Ireland and...

 in early 1940. 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...

 before she was transferred back to the Mediterranean Fleet shortly afterwards. Hyperion participated in the Battle of Calabria

Battle of Calabria

The Battle of Calabria, was a naval battle during the Battle of the Mediterranean in World War II. It was fought between the Italian Royal Navy and the British Royal Navy and the Royal Australian Navy. The battle occurred 30 miles to the east of Punta Stilo, the "toe" of Italy , on 9 July 1940...

 and the Battle of Cape Spada

Battle of Cape Spada

The Battle of Cape Spada was a naval battle during the Battle of the Mediterranean in Second World War. It took place on 19 July 1940 in the Mediterranean Sea off Cape Spada, the north-western extremity of Crete.-Prelude:...

 in July 1940 while escorting the larger ships of the fleet. The ship covered several convoys to Malta before she 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...

 and had to be sunk in December 1940.

Description

Hyperion 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. Hyperion 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 this 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 Mk 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...

 (AA) defence, Hyperion had two quadruple Mark I mounts for the 0.5 inch Vickers Mk III

Vickers .50 machine gun

The Vickers .50 machine gun, also known as the 'Vickers .50' was basically the same as the Vickers machine gun but scaled up to use a larger calibre round.-Mark II, IV and V:...

 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. The ship's anti-aircraft armament was increased when the rear set of torpedo tubes was replaced by a 12-pounder 12 cwt

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...

"cwt" is the abbreviation for hundredweight

Hundredweight

The hundredweight or centum weight is a unit of mass defined in terms of the pound . The definition used in Britain differs from that used in North America. The two are distinguished by the terms long hundredweight and short hundredweight:* The long hundredweight is defined as 112 lb, which...

, 12 cwt referring to the weight of the gun. AA gun, although when exactly the modification was made is not known.

Career

Ordered on 13 December 1934, Hyperion was laid down by Swan Hunter & Wigham Richardson at Wallsend-on-Tyne, England, on 27 March 1935. She was launched on 8 April 1936 and completed on 3 December 1936. Excluding government-furnished equipment like the armament, the ship cost £251,466. She was assigned to the 2nd Destroyer Flotilla of the Mediterranean Fleet upon commissioning. Hyperion patrolled Spanish waters during the Spanish Civil War enforcing the policies of the Non-Intervention Committee

Non-Intervention Committee

During the Spanish Civil War, several countries followed a principle of non-intervention, which would result in the signing of the Non-Intervention Agreement in August 1936 and the setting up of the Non-Intervention Committee, which first met in September...

. The ship received an overhaul at Malta

Malta

Malta , officially known as the Republic of Malta , is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, south of Sicily, east of Tunisia and north of Libya, with Gibraltar to the west and Alexandria to the east.Malta covers just over in...

 between 30 September and 30 October 1937 and resumed patrolling Spanish waters for the rest of the war. Hyperion was sent to Portsmouth

HMNB Portsmouth

Her Majesty's Naval Base Portsmouth is one of three operating bases in the United Kingdom for the British Royal Navy...

 for another refit in August 1939 that lasted from 16 to 27 August.

When World War II began on 3 September, the ship was en-route to Freetown

Freetown

Freetown is the capital and largest city of Sierra Leone, a country in West Africa. It is a major port city on the Atlantic Ocean located in the Western Area of the country, and had a city proper population of 772,873 at the 2004 census. The city is the economic, financial, and cultural center of...

, Sierra Leone

Sierra Leone

Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the north and east, Liberia to the southeast, and the Atlantic Ocean to the west and southwest. Sierra Leone covers a total area of and has an estimated population between 5.4 and 6.4...

 to search for German commerce raiders. Hyperion was transferred to the North America and West Indies Station in late October where he blockaded various German merchant ships in American and Mexican harbours. She intercepted the German 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...

  off Cape Hatteras on 19 December, but Columbus scuttled herself before she could be captured. Hyperion was transferred to the British Isles

British Isles

The British Isles are a group of islands off the northwest coast of continental Europe that include the islands of Great Britain and Ireland and over six thousand smaller isles. There are two sovereign states located on the islands: the United Kingdom of Great Britain and Northern Ireland and...

 in mid-January 1940 and began a refit at Portsmouth that lasted from 25 January to 6 March. The ship rejoined the 2nd Destroyer Flotilla of 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...

.

On 5 April Hyperion escorted the battlecruiser

Battlecruiser

Battlecruisers were large capital ships built in the first half of the 20th century. They were developed in the first decade of the century as the successor to the armoured cruiser, but their evolution was more closely linked to that of the dreadnought battleship...

  as she covered the minelayer

Minelayer

Minelaying is the act of deploying explosive mines. Historically this has been carried out by ships, submarines and aircraft. Additionally, since World War I the term minelayer refers specifically to a naval ship used for deploying naval mines...

s preparing to implement Operation Wilfred

Operation Wilfred

Operation Wilfred was a British naval operation during World War II that involved the mining of the channel between Norway and her offshore islands in order to prevent the transport of swedish iron ore through neutral Norwegian waters to be used to sustain the German war effort...

, an operation to lay mines in the Vestfjord

Vestfjord

Vestfjord is a Norwegian fjord, which would be described as a firth or an open bight of sea between the Lofoten archipelago and mainland Norway, northwest of Bodø...

 to prevent the transport of Swedish iron ore from 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...

 to Germany. The ship and 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...

  pretended to lay a minefield off Bud, Norway

Bud, Norway

Bud is a fishing village and former municipality in the present-day municipality of Fræna in Møre og Romsdal county in western Norway. The village is located on the Romsdal peninsula along the Atlanterhavsveien, west of the village of Hustad, north of the village of Tornes, and east of the...

 on 8 April and reported its location to the Norwegians. Hyperion escorted the aircraft carriers and from 21 April as their aircraft attacked German targets in Norway. She remained with Ark Royal when Glorious returned to 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...

 to refuel on 27 April. In early May the ship 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 an unsuccessful sweep of 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...

 looking for German ships.

Hyperion evacuated British personnel from the Hook of Holland from 8 to 12 May and was then ordered to reinforce the Mediterranean Fleet at Malta on 16 May. On 9 July she participated in the Battle of Calabria as an escort for the heavy ships of Force C and unsuccessfully engaged Italian destroyers and suffered no damage. During the Battle of Cape Spada on 19 July, the ship escorted Australian light cruiser and rescued some of the 525 survivors from the together with the other escorting destroyers. Together with her sister and two other destroyers, she bombarded Italian positions around Sidi Barrani

Sidi Barrani

Sidi Barrani is a town in Egypt, near the Mediterranean Sea, about east of the border with Libya, and around from Tobruk, Libya.Probably named after Sidi Mohammed el Barrani, a Senussi fighter in the early 1900s, the village is mainly a Bedouin community...

 on 25 September. Hyperion escorted the carrier during the Battle of Taranto

Battle of Taranto

The naval Battle of Taranto took place on the night of 11–12 November 1940 during the Second World War. The Royal Navy launched the first all-aircraft ship-to-ship naval attack in history, flying a small number of obsolescent biplane torpedo bombers from an aircraft carrier in the Mediterranean Sea...

 on the night of 11/12 November. With Hereward, she sank the Italian submarine Naiade on 14 December 1940 near Bardia

Bardia

Bardia is a geographic region in the Democratic Republic of Nepal.Bardia comprises a portion of the Terai, or lowland hills and valleys of southern Nepal. The Terai is over 1,000 feet in elevation, and extends all along the Indian border...

.

Hyperion struck a mine on 22 December 1940 off Pantelleria

Pantelleria

Pantelleria , the ancient Cossyra, is an Italian island in the Strait of Sicily in the Mediterranean Sea, southwest of Sicily and just east of the Tunisian coast. Administratively Pantelleria is a comune belonging to the Sicilian province of Trapani...

 as she 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...

  on passage from 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...

 to 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...

while covering a convoy to Malta. The destroyer attempted to tow Hyperion, but the tow cable broke twice and was ordered to sink her after Ilex took off the crew. Only two members of the crew were not rescued and were presumed killed in the explosion.