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HMS Sepoy (1918)

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HMS Sepoy (1918) IWM Q 092738.jpg
Sepoy while serving in Asia in c. 1930
History
United Kingdom
NameSepoy
NamesakeSepoy
Ordered7 April 1917
BuilderDenny, Dumbarton
Yard number1099
Laid down6 August 1917
Launched22 May 1918
Completed6 August 1918
Out of service2 July 1932
FateSold to be broken up
General characteristics
Class and typeS-class destroyer
Displacement
Length265 ft (80.8 m) p.p.
Beam26 ft 8 in (8.13 m)
Draught9 ft 10 in (3.00 m) mean
Propulsion
Speed36 knots (41.4 mph; 66.7 km/h)
Range2,750 nmi (5,090 km) at 15 kn (28 km/h)
Complement90
Armament

HMS Sepoy was an S-class destroyer, which served with the Royal Navy during the First World War and the Russian Civil War. Sepoy was launched in 1918 and initially joined the Grand Fleet. After the Armistice that ended the First World War, the ship was briefly transferred to the Reserve Fleet before sailing to Tallinn in 1919 as part of the Royal Navy response to the fighting there. Sepoy rejoined the Reserve Fleet at the end of the year. In 1922, the destroyer served in the Mediterranean Sea. The ship was later allocated to the naval base in Hong Kong, arriving in 1929. During exercises the following year, a depth charge explosion killed six sailors. The destroyer was also damaged. Following the signing of the London Naval Treaty a few days later, Sepoy returned to the United Kingdom and, in 1932, was sold to be broken up at Newport, Wales.

Discover more about HMS Sepoy (1918) related topics

S-class destroyer (1917)

S-class destroyer (1917)

The S class was a class of 67 destroyers ordered for the Royal Navy in 1917 under the 11th and 12th Emergency War Programmes. They saw active service in the last months of the First World War and in the Russian and Irish Civil Wars during the early 1920s. Most were relegated to the reserve by the mid-1920s and subsequently scrapped under the terms of the London Naval Treaty. Eleven survivors saw much action during the Second World War.

Destroyer

Destroyer

In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or battle group and defend them against powerful short-range attackers. They were originally developed in 1885 by Fernando Villaamil for the Spanish Navy as a defense against torpedo boats, and by the time of the Russo-Japanese War in 1904, these "torpedo boat destroyers" (TBDs) were "large, swift, and powerfully armed torpedo boats designed to destroy other torpedo boats". Although the term "destroyer" had been used interchangeably with "TBD" and "torpedo boat destroyer" by navies since 1892, the term "torpedo boat destroyer" had been generally shortened to simply "destroyer" by nearly all navies by the First World War.

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.

Russian Civil War

Russian Civil War

The Russian Civil War was a multi-party civil war in the former Russian Empire sparked by the overthrowing of the monarchy and the new republican government's failure to maintain stability, as many factions vied to determine Russia's political future. It resulted in the formation of the RSFSR and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century.

Grand Fleet

Grand Fleet

The Grand Fleet was the main battlefleet of the Royal Navy during the First World War. It was established in August 1914 and disbanded in April 1919. Its main base was Scapa Flow in the Orkney Islands.

Armistice of 11 November 1918

Armistice of 11 November 1918

The Armistice of 11 November 1918 was the armistice signed at Le Francport near Compiègne that ended fighting on land, sea, and air in World War I between the Entente and their last remaining opponent, Germany. Previous armistices had been agreed with Bulgaria, the Ottoman Empire and Austria-Hungary. It was concluded after the German government sent a message to American president Woodrow Wilson to negotiate terms on the basis of a recent speech of his and the earlier declared "Fourteen Points", which later became the basis of the German surrender at the Paris Peace Conference, which took place the following year.

Reserve Fleet (United Kingdom)

Reserve Fleet (United Kingdom)

The Reserve Fleet was a Royal Navy formation of decommissioned vessels which could be brought to a state of readiness at time of war.

Mediterranean Sea

Mediterranean Sea

The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant in Western Asia. The Mediterranean has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago.

HMS Tamar (shore station)

HMS Tamar (shore station)

HMS Tamar was the name for the British Royal Navy's base in Hong Kong from 1897 to 1997. It took its name from HMS Tamar, a ship that was used as the base until replaced by buildings ashore.

London Naval Treaty

London Naval Treaty

The London Naval Treaty, officially the Treaty for the Limitation and Reduction of Naval Armament, was an agreement between the United Kingdom, Japan, France, Italy, and the United States that was signed on 22 April 1930. Seeking to address issues not covered in the 1922 Washington Naval Treaty, which had created tonnage limits for each nation's surface warships, the new agreement regulated submarine warfare, further controlled cruisers and destroyers, and limited naval shipbuilding.

Ship breaking

Ship breaking

Ship-breaking is a type of ship disposal involving the breaking up of ships for either a source of parts, which can be sold for re-use, or for the extraction of raw materials, chiefly scrap. Modern ships have a lifespan of 25 to 30 years before corrosion, metal fatigue and a lack of parts render them uneconomical to operate. Ship-breaking allows the materials from the ship, especially steel, to be recycled and made into new products. This lowers the demand for mined iron ore and reduces energy use in the steelmaking process. Fixtures and other equipment on board the vessels can also be reused. While ship-breaking is sustainable, there are concerns about the use by poorer countries without stringent environmental legislation. It is also labour-intensive, and considered one of the world's most dangerous industries.

Newport, Wales

Newport, Wales

Newport is a city and county borough in Wales, situated on the River Usk close to its confluence with the Severn Estuary, 12 mi (19 km) northeast of Cardiff. With a population of 145,700 at the 2011 census, Newport is the third-largest authority with city status in Wales, and seventh most populous overall. Newport became a unitary authority in 1996 and forms part of the Cardiff-Newport metropolitan area. Newport was the site of the last large-scale armed insurrection in Great Britain, the Newport Rising of 1839. The population grew considerably during the 2021 census, rising to 159,587, the largest growth of a unitary authority in Wales.

Design and development

Sepoy was one of twenty-four Admiralty S class destroyers ordered by the British Admiralty on 7 April 1917 as part of the Eleventh War Construction Programme. The design was a development of the R class introduced as a cheaper and faster alternative to the V and W class.[1] Differences with the R class were minor, such as having the searchlight moved aft.[2]

Sepoy had a overall length of 276 ft (84 m) and a length of 265 ft (81 m) between perpendiculars. Beam was 26 ft 8 in (8.13 m) and draught 9 ft 10 in (3.00 m). Displacement was 1,075 long tons (1,092 t) normal and 1,221 long tons (1,241 t) deep load. Three Yarrow boilers fed steam to two sets of Brown-Curtis geared steam turbines rated at 27,000 shaft horsepower (20,000 kW) and driving two shafts, giving a design speed of 36 knots (67 km/h; 41 mph) at normal loading and 32.5 knots (60.2 km/h; 37.4 mph) at deep load. Two funnels were fitted. A full load of 301 long tons (306 t) of fuel oil was carried, which gave a design range of 2,750 nautical miles (5,090 km; 3,160 mi) at 15 knots (28 km/h; 17 mph).[3]

Armament consisted of three QF 4-inch (102 mm) Mk IV guns on the ship's centreline.[4] One was mounted raised on the forecastle, one on a platform between the funnels and one aft.[5] The ship also mounted a single 40-millimetre (1.6 in) 2-pounder "pom-pom" anti-aircraft gun for air defence. Four 21-inch (533 mm) torpedo tubes were fitted in two twin rotating mounts aft.[4] The ship was designed to mount two additional 18-inch (457 mm) torpedo tubes either side of the superstructure but this required the forecastle plating to be cut away, making the vessel very wet, so they were removed.[2] The weight saved enabled the heavier Mark V 21-inch torpedo to be carried.[1] The ship had a complement of 90 officers and ratings.[6]

Discover more about Design and development related topics

S-class destroyer (1917)

S-class destroyer (1917)

The S class was a class of 67 destroyers ordered for the Royal Navy in 1917 under the 11th and 12th Emergency War Programmes. They saw active service in the last months of the First World War and in the Russian and Irish Civil Wars during the early 1920s. Most were relegated to the reserve by the mid-1920s and subsequently scrapped under the terms of the London Naval Treaty. Eleven survivors saw much action during the Second World War.

Admiralty (United Kingdom)

Admiralty (United Kingdom)

The Admiralty was a department of the Government of the United Kingdom responsible for the command of the Royal Navy until 1964, historically under its titular head, the Lord High Admiral – one of the Great Officers of State. For much of its history, from the early 18th century until its abolition, the role of the Lord High Admiral was almost invariably put "in commission" and exercised by the Lords Commissioner of the Admiralty, who sat on the governing Board of Admiralty, rather than by a single person. The Admiralty was replaced by the Admiralty Board in 1964, as part of the reforms that created the Ministry of Defence and its Navy Department.

R-class destroyer (1916)

R-class destroyer (1916)

The first R class were a class of 62 destroyers built between 1916 and 1917 for the Royal Navy. They were an improvement, specifically in the area of fuel economy, of the earlier Admiralty M-class destroyers. The most important difference was that the Admiralty R class had two shafts and geared turbines, compared with the three shafts and direct turbines of the Admiralty M class, but in appearance the R class could be distinguished from its predecessors by having the after 4-inch gun mounted in a bandstand. The Admiralty ordered the first two of this class of ships in May 1915. Another seventeen were ordered in July 1915, a further eight in December 1915, and a final twenty-three in March 1916.

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.

Length between perpendiculars

Length between perpendiculars

Length between perpendiculars is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. When there is no sternpost, the centerline axis of the rudder stock is used as the aft end of the length between perpendiculars.

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.

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.

Long ton

Long ton

The long ton, also known as the imperial ton or displacement ton, is the name for the unit called the "ton" in the avoirdupois system of weights or Imperial system of measurements. It was standardised in the 13th century. It is used in the United Kingdom and several other Commonwealth of Nations countries alongside the mass-based metric tonne defined in 1799, as well as in the United States for bulk commodities.

John Brown & Company

John Brown & Company

John Brown and Company of Clydebank was a Scottish marine engineering and shipbuilding firm. It built many notable and world-famous ships including RMS Lusitania, RMS Aquitania, HMS Hood, HMS Repulse, RMS Queen Mary, RMS Queen Elizabeth and the Queen Elizabeth 2.

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.

Propeller

Propeller

A propeller is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft with an approximately horizontal axis.

Construction and career

Laid down on 6 August 1917 by William Denny and Brothers in Dumbarton with the yard number 1099, Sepoy was launched on 22 May the following year.[7] The vessel was the second with the name, given in honour of the Indian infantry, to serve in the Royal Navy.[8] Sepoy was completed on 6 August and joined the Twelfth Destroyer Flotilla of the Grand Fleet.[9]

After the Armistice that ended the First World War, Sepoy was transferred to the Reserve Fleet at Rosyth.[10] However, the escalating civil war in Russia meant that the destroyer was soon back in service. The United Kingdom felt that the Russians were planning to liberate the Baltic States by integrating them into the new Soviet Union.[11] The destroyer formed part of a flotilla under the command of Rear Admiral Sir Walter Cowan, who had returned to Copenhagen with fresh crews after 19 February 1919.[12] Cowan took Sepoy, along with sister ship Seafire and light cruiser Caledon, to Tallinn.[13] The ship remained there until 25 April, when reinforcements arrived.[14] On 3 December, Sepoy was recommissioned in the Reserve Fleet at Chatham,[15] joining the Sixth Destroyer Flotilla of the Mediterranean Fleet.[16] In May 1920, Sepoy was on station at İzmit on the Sea of Marmara, as the Turkish War of Independence continued.[17]

On 2 December 1922, Sepoy was based in Gibraltar but 10 days later departed Malta for Constantinople with sister ship Tourmaline.[18][19] The vessel returned on 23 February.[20]

On 7 January 1927, Sepoy was recommissioned at Nore to join the Eighth Destroyer Flotilla at the Royal Naval base Tamar at Hong Kong.[21] The vessel arrived on 1 October 1929.[22] On 8 April the following year, the destroyer departed for exercises but, on the following day, one of the depth charges carried aft exploded. Three sailors died instantly and another two were lost overboard. The destroyer was damaged but reached the shore safely. Another sailer later died in hospital.[23][24]

Thirteen days later, the London Naval Treaty was signed, which limited total destroyer tonnage in the Royal Navy. The Admiralty was looking to introduce more modern destroyers and so needed to scrap some of the older vessels.[25] Sepoy was one of those chosen for retirement. The ship returned to the United Kingdom and, on 2 July 1932, was sold to Cashmore to be broken up at Newport, Wales.[26]

Discover more about Construction and career related topics

Keel laying

Keel laying

Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship.

Dumbarton

Dumbarton

Dumbarton is a town in West Dunbartonshire, Scotland, on the north bank of the River Clyde where the River Leven flows into the Clyde estuary. In 2006, it had an estimated population of 19,990.

Ceremonial ship launching

Ceremonial ship launching

Ceremonial ship launching involves the performance of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back thousands of years, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself.

Sepoy

Sepoy

Sepoy was the Persian-derived term from the word "sipahi" or a professional Indian infantryman, traditionally armed with a musket, in the armies of the Mughal Empire.

12th Destroyer Flotilla

12th Destroyer Flotilla

The British 12th Destroyer Flotilla, or Twelfth Destroyer Flotilla, was a naval formation of the Royal Navy from November 1915 to March 1919 and again from September 1939 to 2 July 1943.

Grand Fleet

Grand Fleet

The Grand Fleet was the main battlefleet of the Royal Navy during the First World War. It was established in August 1914 and disbanded in April 1919. Its main base was Scapa Flow in the Orkney Islands.

Armistice of 11 November 1918

Armistice of 11 November 1918

The Armistice of 11 November 1918 was the armistice signed at Le Francport near Compiègne that ended fighting on land, sea, and air in World War I between the Entente and their last remaining opponent, Germany. Previous armistices had been agreed with Bulgaria, the Ottoman Empire and Austria-Hungary. It was concluded after the German government sent a message to American president Woodrow Wilson to negotiate terms on the basis of a recent speech of his and the earlier declared "Fourteen Points", which later became the basis of the German surrender at the Paris Peace Conference, which took place the following year.

Reserve Fleet (United Kingdom)

Reserve Fleet (United Kingdom)

The Reserve Fleet was a Royal Navy formation of decommissioned vessels which could be brought to a state of readiness at time of war.

Rosyth Dockyard

Rosyth Dockyard

Rosyth Dockyard is a large naval dockyard on the Firth of Forth at Rosyth, Fife, Scotland, owned by Babcock Marine, which formerly undertook refitting of Royal Navy surface vessels and submarines. Before its privatisation in the 1990s it was formerly the Royal Naval Dockyard Rosyth. Its primary role now is the dismantling of decommissioned nuclear submarines. It is also the integration site for the Royal Navy's newest aircraft carriers, the Queen Elizabeth class as well as the Type 31 Frigate.

Russian Civil War

Russian Civil War

The Russian Civil War was a multi-party civil war in the former Russian Empire sparked by the overthrowing of the monarchy and the new republican government's failure to maintain stability, as many factions vied to determine Russia's political future. It resulted in the formation of the RSFSR and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century.

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. Prior to this smaller cruisers had been of the protected cruiser model, possessing armored decks only. While lighter and smaller than other contemporary ships they were still true cruisers, retaining the extended radius of action and self-sufficiency to act independently around the world. Through their history they served in a variety of roles, primarily as convoy escorts and destroyer command ships, but also as scouts and fleet support vessels for battle fleets.

HMS Caledon (D53)

HMS Caledon (D53)

HMS Caledon was a C-class light cruiser built for the Royal Navy during World War I. She was the name ship of the Caledon sub-class of the C class. She survived both world wars to be scrapped in 1948.

Pennant numbers

Penant numbers
Pennant number Date
G26 September 1918[27]
F49 December 1919[28]
D03 1923[29]

Source: "HMS Sepoy (1918)", Wikipedia, Wikimedia Foundation, (2023, January 20th), https://en.wikipedia.org/wiki/HMS_Sepoy_(1918).

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References

Citations

  1. ^ a b Preston 1985, p. 85.
  2. ^ a b March 1966, p. 221.
  3. ^ Friedman 2009, p. 297.
  4. ^ a b Preston 1985, p. 84.
  5. ^ Friedman 2009, p. 163.
  6. ^ Parkes & Prendergast 1969, p. 107.
  7. ^ Lyon 1975, p. 719.
  8. ^ Manning & Walker 1959, p. 401.
  9. ^ "Destroyer Flotillas of the Grand Fleet". The Navy List: 12. October 1918. Retrieved 27 October 2021 – via National Library of Scotland.
  10. ^ "V Vessels in Reserve at Home Ports and Other Bases". The Navy List: 18. July 1919. Retrieved 27 October 2021 – via National Library of Scotland.
  11. ^ Head 2009, p. 136.
  12. ^ Head 2009, p. 144.
  13. ^ Head 2009, p. 145.
  14. ^ Head 2009, p. 148.
  15. ^ "Sepoy". The Navy List: 868. January 1921. Retrieved 27 October 2021 – via National Library of Scotland.
  16. ^ "VII.—Mediterranean". The Navy List: 712—13. January 1920. Retrieved 20 January 2023 – via National Library of Scotland.
  17. ^ Halpern 2011, pp. 217, 221, 225–226.
  18. ^ "British Warships in the Near East". The Times. No. 43204. 2 December 1922. p. 10.
  19. ^ "Destroyers for Near East". The Times. No. 43214. 14 December 1922. p. 14.
  20. ^ "British Warships in the Near East". The Times. No. 43274. 24 February 1923. p. 9.
  21. ^ "Sepoy". The Navy List: 268. February 1929.
  22. ^ "Sepoy". The Navy List: 269. July 1931.
  23. ^ "Destroyer Tragedy off Hong Kong: Death-Roll Now Six". The Straits Times. 9 April 1930. p. 11.
  24. ^ "Explosion in Destroyer". The Times. No. 45483. 9 April 1930. p. 16.
  25. ^ Friedman 2009, p. 211.
  26. ^ Colledge & Warlow 2006, p. 316.
  27. ^ Dittmar & Colledge 1972, p. 75.
  28. ^ Bush & Warlow 2021, p. 49.
  29. ^ Bush & Warlow 2021, p. 33.

Bibliography

  • Bush, Steve; Warlow, Ben (2021). Pendant Numbers of the Royal Navy: A Complete History of the Allocation of Pendant Numbers to Royal Navy Warships & Auxiliaries. Barnsley: Seaforth Publishing. ISBN 978-1-526793-78-2.
  • Colledge, J. J.; Warlow, Ben (2006). Ships of the Royal Navy: a complete record of all fighting ships of the Royal Navy from the 15th century to the present. London: Chatham. ISBN 978-1-85367-566-9.
  • Dittmar, F.J.; Colledge, J.J. (1972). British Warships 1914–1919. Shepperton: Ian Allan. ISBN 978-0-71100-380-4.
  • Friedman, Norman (2009). British Destroyers: From Earliest Days to the First World War. Barnsley: Seaforth Publishing. ISBN 978-1-84832-049-9.
  • Halpern, Paul (2011). The Mediterranean Fleet, 1919-1929. Publications of the Navy Records Society. Vol. 158. Farnham, UK: Ashgate. ISBN 978-1-40942-756-8.
  • Head, Michael (2009). "The Baltic Campaign, 1918-1920: Part I". Warship International. 46 (2): 134–150.
  • Lyon, David John (1975). The Denny List: Ship numbers 769-1273. London: National Maritime Museum. OCLC 256517657.
  • Manning, Thomas Davys; Walker, Charles Frederick (1959). British Warship Names. London: Putnam. OCLC 780274698.
  • March, Edgar J. (1966). British Destroyers: A History of Development, 1892–1953. London: Seeley Service. OCLC 164893555.
  • Parkes, Oscar; Prendergast, Maurice (1969). Jane's Fighting Ships 1919. Newton Abbott: David & Charles. OCLC 907574860.
  • Preston, Antony (1985). "Great Britain and Empire Forces". In Gardiner, Robert; Gray, Randal (eds.). Conway's All the World's Fighting Ships 1906–1921. London: Conway Maritime Press. pp. 1–104. ISBN 978-0-85177-245-5.

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