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HMIS Orissa (J200)

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HMIS Orissa FL17121.jpg
History
India
NameOrissa
Ordered24 August 1940
BuilderLobnitz & Co.
Laid down15 May 1941
Launched20 November 1941
Commissioned14 March 1942
Decommissioned1949
FateScrapped
General characteristics
Class and type Bangor-class minesweeper
Displacement
  • 673 long tons (684 t) standard
  • 860 long tons (874 t) full
Length189 ft (58 m) o/a
Beam28 ft 6 in (8.69 m)
Draught10 ft 6 in (3.20 m)
Installed power
Propulsion
Speed16 knots (30 km/h; 18 mph)
Range2,800 nmi (5,200 km; 3,200 mi) at 10 knots (19 km/h; 12 mph)
Complement60
Armament

HMIS Orissa (J200) was a Bangor-class minesweepers built for the Royal Navy, but transferred to the Royal Indian Navy (RIN) during the Second World War.

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Design and description

The Bangor class was designed as a small minesweeper that could be easily built in large numbers by civilian shipyards; as steam turbines were difficult to manufacture, the ships were designed to accept a wide variety of engines. Orissa displaced 673 long tons (684 t) at standard load and 860 long tons (870 t) at deep load. The ship had an overall length of 189 feet (57.6 m), a beam of 28 feet 6 inches (8.7 m) and a draught of 10 feet 6 inches (3.2 m).[1] The ship's complement consisted of 60 officers and ratings.[2]

She was powered by two vertical triple-expansion steam engines (VTE), each driving one shaft, using steam provided by two Admiralty three-drum boilers. The engines produced a total of 2,400 shaft horsepower (1,800 kW) and gave a maximum speed of 16 knots (30 km/h; 18 mph). The ship carried a maximum of 160 long tons (163 t) of fuel oil that gave her a range of 2,800 nautical miles (5,200 km; 3,200 mi) at 10 knots (19 km/h; 12 mph).[3]

The VTE-powered Bangors were armed with a 3-inch (76 mm) anti-aircraft gun and a single QF 2-pounder (4 cm) AA gun or a quadruple mount for the Vickers .50 machine gun. In some ships the 2-pounder was replaced a single or twin 20 mm Oerlikon AA gun, while most ships were fitted with four additional single Oerlikon mounts over the course of the war.[3] For escort work, their minesweeping gear could be exchanged for around 40 depth charges.[2]

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Steam turbine

Steam turbine

A steam turbine is a machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel alloys into precision parts using technologies that first became available in the 20th century; continued advances in durability and efficiency of steam turbines remains central to the energy economics of the 21st century.

Displacement (ship)

Displacement (ship)

The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used.

Length overall

Length overall

Length overall is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth.

Beam (nautical)

Beam (nautical)

The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water.

Draft (hull)

Draft (hull)

The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water.

Naval rating

Naval rating

In a navy, a rate, rating or bluejacket is a junior enlisted sailor who is not a warrant officer or commissioned officer. Depending on the country and navy that uses it, the exact term and the range of ranks that it refers to may vary.

Knot (unit)

Knot (unit)

The knot is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h. The ISO standard symbol for the knot is kn. The same symbol is preferred by the Institute of Electrical and Electronics Engineers (IEEE), while kt is also common, especially in aviation, where it is the form recommended by the International Civil Aviation Organization (ICAO). The knot is a non-SI unit. The knot is used in meteorology, and in maritime and air navigation. A vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour.

Fuel oil

Fuel oil

Fuel oil is any of various fractions obtained from the distillation of petroleum. Such oils include distillates and residues. Fuel oils include heavy fuel oil, marine fuel oil (MFO), bunker fuel, furnace oil (FO), gas oil (gasoil), heating oils, diesel fuel and others.

Nautical mile

Nautical mile

A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. Historically, it was defined as the meridian arc length corresponding to one minute of latitude. Today the international nautical mile is defined as exactly 1,852 metres. The derived unit of speed is the knot, one nautical mile per hour.

QF 2-pounder naval gun

QF 2-pounder naval gun

The 2-pounder gun, officially the QF 2-pounder and universally known as the pom-pom, was a 40 mm (1.6 in) British autocannon, used as an anti-aircraft gun by the Royal Navy. The name came from the sound that the original models make when firing. This QF 2-pounder was not the same gun as the Ordnance QF 2-pounder, used by the British Army as an anti-tank gun and a tank gun, although they both fired 2 lb (0.91 kg), 40 mm (1.6 in) projectiles.

Oerlikon 20 mm cannon

Oerlikon 20 mm cannon

The Oerlikon 20 mm cannon is a series of autocannons, based on an original German Becker Type M2 20 mm cannon design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II. Many versions of the cannon are still used today.

Depth charge

Depth charge

A depth charge is an anti-submarine warfare (ASW) weapon. It is intended to destroy a submarine by being dropped into the water nearby and detonating, subjecting the target to a powerful and destructive hydraulic shock. Most depth charges use high explosive charges and a fuze set to detonate the charge, typically at a specific depth. Depth charges can be dropped by ships, patrol aircraft, and helicopters.

Construction and career

HMIS Orissa was ordered from Lobnitz & Co. originally for the Royal Navy as HMS Clydebank in 1940. However, before she was launched, she was transferred to the Royal Indian Navy and eventually commissioned as Orissa.[4] The ship was a part of the Eastern Fleet, and escorted numerous convoys between Africa, British India and Australia in 1943-45.[5][6][7]

On 11 June 1942, Orissa rescued 20 surviving crew of British tanker Geo H. Jones which had been torpedoed and sunk by German submarine U-455, northeast of the Azores in position 45°40′N 22°40′W / 45.667°N 22.667°W / 45.667; -22.667Coordinates: 45°40′N 22°40′W / 45.667°N 22.667°W / 45.667; -22.667. On 22 February 1944, Orissa with HMAS Tamworth rescued the surviving crew of the American tanker E.G. Seubert which was torpedoed and sunk by U-510 about 200 nautical miles east of Aden in position 13°50′N 48°49′E / 13.833°N 48.817°E / 13.833; 48.817.

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Lobnitz

Lobnitz

Lobnitz & Company was a Scottish shipbuilding company located at Renfrew on the River Clyde, west of the Renfrew Ferry crossing and east of the confluence with the River Cart. The Lobnitz family lived at Chapeltoun House in East Ayrshire. The company built dredgers, floating docks, fishing boats, tugs and workboats.

Royal Navy

Royal Navy

The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service.

Africa

Africa

Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. With 1.4 billion people as of 2021, it accounts for about 18% of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Africa an important economic market in the broader global context.

Australia

Australia

Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of 7,617,930 square kilometres (2,941,300 sq mi), Australia is the largest country by area in Oceania and the world's sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates, with deserts in the centre, tropical rainforests in the north-east, and mountain ranges in the south-east.

German submarine U-455

German submarine U-455

German submarine U-455 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 3 September 1940, launched on 21 June 1941 and commissioned on 21 August with Kapitänleutnant Hans-Heinrich Giessler in command of a crew of 51.

Azores

Azores

The Azores, officially the Autonomous Region of the Azores, is one of the two autonomous regions of Portugal. It is an archipelago composed of nine volcanic islands in the Macaronesia region of the North Atlantic Ocean, about 1,400 km (870 mi) west of Lisbon, about 1,500 km (930 mi) northwest of Morocco, and about 1,930 km (1,200 mi) southeast of Newfoundland, Canada.

Geographic coordinate system

Geographic coordinate system

The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface.

German submarine U-510

German submarine U-510

German submarine U-510 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II, which later served in the French Navy. The submarine was laid down on 1 November 1940 at the Deutsche Werft yard at Hamburg as yard number 306, launched on 4 September 1941, and commissioned on 25 November 1941 under the command of Korvettenkapitän Karl Neitzel.

Aden

Aden

Aden is a city, and since 2015, the temporary capital of Yemen, near the eastern approach to the Red Sea, some 170 km (110 mi) east of the strait Bab-el-Mandeb. Its population is approximately 800,000 people. Aden's natural harbour lies in the crater of a dormant volcano, which now forms a peninsula joined to the mainland by a low isthmus. This harbour, Front Bay, was first used by the ancient Kingdom of Awsan between the 7th to 5th centuries BC. The modern harbour is on the other side of the peninsula. Aden gets its name from the Gulf of Aden.

Source: "HMIS Orissa (J200)", Wikipedia, Wikimedia Foundation, (2022, March 21st), https://en.wikipedia.org/wiki/HMIS_Orissa_(J200).

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References
  1. ^ Lenton, pp. 253–54
  2. ^ a b Chesneau, p. 64
  3. ^ a b Lenton, p. 254
  4. ^ "HMS Clydebank (J 200) of the Royal Navy - British Minesweeper of the Bangor class - Allied Warships of WWII". uboat.net. Retrieved 25 August 2015.
  5. ^ "Eastern Fleet War Diary 1943". Naval-history.net. Retrieved 25 August 2015.
  6. ^ "Eastern Fleet War Diary 1943". Naval-history.net. Retrieved 25 August 2015.
  7. ^ "East Indies Fleet War Diary 1944". Naval-history.net. 30 December 1944. Retrieved 25 August 2015.
Bibliography

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