was the

lead ship The lead ship, name ship, or class leader is the first of a series or class of ships that are all constructed according to the same general design. The term is applicable to naval ships and large civilian vessels. Large ships are very comple ...

of the two

pre-dreadnought battleship Pre-dreadnought battleships were sea-going battleships built from the mid- to late- 1880s to the early 1900s. Their designs were conceived before the appearance of in 1906 and their classification as "pre-dreadnought" is retrospectively appli ...

s built in the first decade of the 20th century, the last to be built by British shipyards for the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...

(IJN). Ordered just before the start of the

Russo-Japanese War The Russo-Japanese War (8 February 1904 – 5 September 1905) was fought between the Russian Empire and the Empire of Japan over rival imperial ambitions in Manchuria and the Korean Empire. The major land battles of the war were fought on the ...

of 1904–1905, the ship was completed a year after its end. She saw no combat during

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

, although the ship was present when Japan joined the Siberian Intervention in 1918. ''Katori'' was disarmed and

scrapped Scrap consists of recyclable Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on i ...

in 1923–1925 in accordance with the terms of the

Washington Naval Treaty The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922 among the major Allies of World War I, Allies of World War I, which agreed to prevent an arms race by limiting Navy, naval construction. It was negotiated at ...

of 1922.

Design and description

The ''Katori''-class ships were ordered just before the start of the Russo-Japanese War in 1904 as improved versions of the

Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...

’s s. ''Katori'' was

long overall Length overall (LOA, o/a, o.a. or oa) 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 u ...

and had a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Radio beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially lo ...

of . She had a full-load draught of and normally displaced and had a crew of 864 officers and enlisted men. The ship was powered by two vertical triple-expansion steam engines using steam generated by 20 Niclausse boilers. The engines were rated at , using forced draught, and were designed to reach a top speed of . ''Katori'', however, reached a top speed of from on her

sea trial A sea trial or trial trip is the testing phase of a watercraft (including boats, ships, and submarines). It is also referred to as a "shakedown cruise" by many naval personnel. It is usually the last phase of construction and takes place on op ...

s. She carried a maximum of of coal and of

fuel oil Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil (bunker fuel), marine f ...

which was sprayed on the coal to increase their power. This allowed her to steam for at a speed of .Jentschura, Jung & Mickel, p. 22 The ship's

main battery A main battery is the primary weapon or group of weapons around which a warship is designed. As such, a main battery was historically a naval gun or group of guns used in volleys, as in the broadsides of cannon on a ship of the line. Later, th ...

consisted of four 12-inch guns mounted in two twin-

gun turret A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanis ...

s, one forward and one aft. The

secondary armament Secondary armaments are smaller, faster-firing weapons that are typically effective at a shorter range than the main battery, main (heavy) weapons on military systems, including battleship- and cruiser-type warships, tanks/armored personnel c ...

consisted of four 10-inch guns mounted in four single-gun turrets positioned on each side of the

superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...

. ''Katori'' also carried twelve QF 6-inch guns, mounted in

casemate A casemate is a fortified gun emplacement or armoured structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" ...

s on the sides of the hull and in the superstructure. A number of smaller guns were carried for defence against

torpedo boat A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs were steam-powered craft dedicated to ramming enemy ships with explosive spar torpedoes. Later evolutions launched variants of ...

s. These included a dozen 12-pounder guns and three 3-pounder

Hotchkiss gun The Hotchkiss gun can refer to different types of the Hotchkiss arms company starting in the late 19th century. It usually refers to the 1.65-inch (42 mm) light mountain gun. There were also navy (47 mm) and 3-inch (76 mm) ...

s. She was also armed with five submerged 18-inch (450 mm)

torpedo tube A torpedo tube is a cylindrical 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 (also referred to as torpedo launchers) installed aboa ...

s, two on each broadside and one in the stern. ''Katori''s

waterline The waterline is the line where the hull of a ship meets the surface of the water. A waterline can also refer to any line on a ship's hull that is parallel to the water's surface when the ship is afloat in a level trimmed position. Hence, wate ...

armour belt consisted of

Krupp cemented armour Krupp armour was a type of steel naval armour used in the construction of capital ships starting shortly before the end of the nineteenth century. It was developed by Germany's Krupp Arms Works in 1893 and quickly replaced Harvey armour as the ...

and was thick. The armour of her main gun turrets had a maximum thickness of and her deck ranged from in thickness.Gardiner & Gray, p. 227

Construction and career

''Katori'', named for a

Shinto shrine A Stuart D. B. Picken, 1994. p. xxiii is a structure whose main purpose is to house ("enshrine") one or more kami, , the deities of the Shinto religion. The Also called the . is where a shrine's patron is or are enshrined.Iwanami Japanese dic ...

in Katori City, was ordered in January 1904 from

Vickers Vickers was a British engineering company that existed from 1828 until 1999. It was formed in Sheffield as a steel foundry by Edward Vickers and his father-in-law, and soon became famous for casting church bells. The company went public in 18 ...

.Brook, p. 282 The ship was

laid down 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. Keel laying is one ...

at their

Barrow-in-Furness Barrow-in-Furness is a port town and civil parish (as just "Barrow") in the Westmorland and Furness district of Cumbria, England. Historic counties of England, Historically in the county of Lancashire, it was incorporated as a municipal borou ...

shipyard on 27 April 1904.Silverstone, p. 332 She was launched on 4 July 1905, Prince and Princess Arisugawa were on hand for the official launching ceremony. and completed on 20 May 1906. ''Katori'' departed Britain on 7 June on her maiden voyage and

shakedown cruise Shakedown cruise is a nautical term in which the performance of a ship is tested. Generally, shakedown cruises are performed before a ship enters service or after major changes such as a crew change, repair, refit or overhaul. The shakedown ...

and arrived at

Yokosuka is a city in Kanagawa Prefecture, Japan. , the city has a population of 373,797, and a population density of . The total area is . Yokosuka is the 11th-most populous city in the Greater Tokyo Area, and the 12th in the Kantō region. The city i ...

on 15 August. In a naval review off Yokosuka on 10 November 1913, she served as the flagship for the Taishō Emperor. ''Katori'' occupied the German colony of Saipan, shortly after the start of World War I, on 14 October 1914. Afterward the ship began a refit in 1914 that lasted until late 1916 and was assigned to the 2nd Battleship Squadron upon its completion. During this refit, two 12-pounder

anti-aircraft gun Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-ba ...

s were replaced two of the low-angle 12-pounders. She became the flagship of the 5th Battleship Squadron in 1917–18 and served as the flagship for the Japanese commander-in-chief at

Nikolayevsk-on-Amur Nikolayevsk-on-Amur () is a town in Khabarovsk Krai, Russia located on the Amur River close to its liman in the Pacific Ocean. Population: 17,815 (2024); History Medieval and early-modern history In the late Middle Ages, the people living al ...

in late 1918 as Japan decided to intervene in the

Russian Civil War The Russian Civil War () was a multi-party civil war in the former Russian Empire sparked by the 1917 overthrowing of the Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. I ...

.Preston, p. 191 On 3 March 1921, ''Katori'', escorted by ''Kashima'', departed

Yokohama is the List of cities in Japan, second-largest city in Japan by population as well as by area, and the country's most populous Municipalities of Japan, municipality. It is the capital and most populous city in Kanagawa Prefecture, with a popu ...

bound for Great Britain carrying

Crown Prince A crown prince or hereditary prince is the heir apparent to the throne in a royal or imperial monarchy. The female form of the title, crown princess, is held by a woman who is heir apparent or is married to the heir apparent. ''Crown prince ...

Hirohito , Posthumous name, posthumously honored as , was the 124th emperor of Japan according to the traditional order of succession, from 25 December 1926 until Death and state funeral of Hirohito, his death in 1989. He remains Japan's longest-reigni ...

, the first Japanese crown prince to travel abroad. The ships arrived at

Portsmouth Portsmouth ( ) is a port city status in the United Kingdom, city and unitary authority in Hampshire, England. Most of Portsmouth is located on Portsea Island, off the south coast of England in the Solent, making Portsmouth the only city in En ...

on 9 May and Hirohito left the ship to tour Europe; he boarded the battleship again in Naples several months later for the voyage home. The ship was disarmed in April 1922, stricken from the

Navy List A Navy Directory, Navy List or Naval Register is an official list of naval officers, their ranks and seniority, the ships which they command or to which they are appointed, etc., that is published by the government or naval authorities of a co ...

on 20 September 1923 and scrapped at

Maizuru Naval Arsenal was one of four principal naval shipyards owned and operated by the Imperial Japanese Navy. History The Maizuru Naval District was established at Maizuru, Kyoto Prefecture in 1889, as the fourth of the naval districts responsible for the defen ...

by 29 January 1925 to comply with the terms of the Washington Naval Treaty. Her guns were turned over to the

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

for use as coastal artillery; one main-gun turret was emplaced near

Tokyo Bay is a bay located in the southern Kantō region of Japan spanning the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture, on the southern coast of the island of Honshu. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. Th ...

in 1925–1932 and another was installed on

Iki Island , or the , is an archipelago in the Tsushima Strait, which is administered as the city of Iki in Nagasaki Prefecture, Japan. The islands have a total area of with a total population of 28,008. Only four (4) of the twenty-three (23) named is ...

in the

Strait of Tsushima or Eastern Channel (; ''Dongsuro'') is a channel of the Korea Strait, which lies between Korea and Japan, connecting the Sea of Japan, the Yellow Sea, and the East China Sea. The strait is the channel to the east and southeast of Tsushima Isl ...

in 1929. The remaining guns were placed in reserve and ultimately scrapped in 1943.Gibbs & Tamura, pp. 192, 194

Notes

References

* * * * * * * * * * *

External links

Materials of the Imperial Japanese Navy

New York Times July 5, 1905 on launching of Katori
{{DEFAULTSORT:Katori Katori-class battleships Ships built in Barrow-in-Furness 1905 ships World War I battleships of Japan