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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 her class of
armored cruiser The armored cruiser was a type of warship of the late 19th and early 20th centuries. It was designed like other types of cruisers to operate as a long-range, independent warship, capable of defeating any ship apart from a pre-dreadnought battles ...
s (''Sōkō jun'yōkan'') built 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) in the late 1890s. As Japan lacked the industrial capacity to build such warships itself, the ship was built in Britain. She often served as a
flagship A flagship is a vessel used by the commanding officer of a group of navy, naval ships, characteristically a flag officer entitled by custom to fly a distinguishing flag. Used more loosely, it is the lead ship in a fleet of vessels, typically ...
and participated in most of the naval battles 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 lightly damaged during the
Battle off Ulsan The naval Battle of Ulsan (Japanese: 蔚山沖海戦 ''Urusan'oki kaisen''; Russian: Бой в Корейском проливе, ''Boi v Koreiskom prolive''), also known as the Battle of the Japanese Sea or Battle of the Korean Strait, took pl ...
and the
Battle of Tsushima The Battle of Tsushima (, ''Tsusimskoye srazheniye''), also known in Japan as the , was the final naval battle of the Russo-Japanese War, fought on 27–28 May 1905 in the Tsushima Strait. A devastating defeat for the Imperial Russian Navy, the ...
. ''Izumo'' was ordered to protect Japanese citizens and interests in 1913 during the
Mexican Revolution The Mexican Revolution () was an extended sequence of armed regional conflicts in Mexico from 20 November 1910 to 1 December 1920. It has been called "the defining event of modern Mexican history". It saw the destruction of the Federal Army, its ...
and was still there when
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 ...
began in 1914. She was then tasked to search for German commerce raiders and protect Allied shipping off the western coasts of North and Central America. The ship assisted the armored cruiser in early 1915 when she struck a rock off
Baja California Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...
. In 1917, ''Izumo'' became the flagship of the Japanese squadron deployed in the
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 east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...
. After the war, she sailed to Great Britain to take control of some ex-German
submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...
s and then escorted them part of the way back to Japan. The ship spent most of the 1920s as a
training ship A training ship is a ship used to train students as sailors. The term is mostly used to describe ships employed by navies to train future officers. Essentially there are two types: those used for training at sea and old hulks used to house class ...
for
naval cadet Officer cadet is a rank held by military personnel during their training to become commissioned officers. In the United Kingdom, the rank is also used by personnel of University Service Units such as the University Officers' Training Corps. Th ...
s and became flagship of the IJN's China forces in 1932 during the First Shanghai Incident. ''Izumo'' participated in the
Battle of Shanghai The Battle of Shanghai ( zh, t=淞滬會戰, s=淞沪会战, first=t, p=Sōng hù huìzhàn) was a major battle fought between the Empire of Japan and the Republic of China (1912–1949), Republic of China in the Chinese city of Shanghai during ...
five years later and was not damaged, despite repeated aerial attacks. The ship played a minor role in the
Pacific War The Pacific War, sometimes called the Asia–Pacific War or the Pacific Theatre, was the Theater (warfare), theatre of World War II fought between the Empire of Japan and the Allies of World War II, Allies in East Asia, East and Southeast As ...
, supporting Japanese forces during Philippines Campaign until she struck a mine. She returned to Japan in 1943 and again became a training ship for naval cadets. ''Izumo'' was sunk by American carrier aircraft during the attack on Kure in July 1945. Her wreck was refloated and scrapped in 1947.


Background and description

The 1896 Naval Expansion Plan was made after the
First Sino-Japanese War The First Sino-Japanese War (25 July 189417 April 1895), or the First China–Japan War, was a conflict between the Qing dynasty of China and the Empire of Japan primarily over influence in Joseon, Korea. In Chinese it is commonly known as th ...
and included four armored cruisers in addition to four more battleships, all of which had to be ordered from British shipyards as Japan lacked the capability to build them itself. Further consideration of the Russian building program caused the IJN to believe that the battleships ordered under the original plan would not be sufficient to counter the
Imperial Russian Navy The Imperial Russian Navy () operated as the navy of the Russian Tsardom and later the Russian Empire from 1696 to 1917. Formally established in 1696, it lasted until being dissolved in the wake of the February Revolution and the declaration of ...
. Budgetary limitations prevented ordering more battleships and the IJN decided to expand the number of more affordable armored cruisers to be ordered from four to six ships. The revised plan is commonly known as the "Six-Six Fleet". Unlike most of their contemporaries which were designed for
commerce raiding Commerce raiding is a form of naval warfare used to destroy or disrupt logistics of the enemy on the open sea by attacking its merchant shipping, rather than engaging its combatants or enforcing a blockade against them. Privateering is a fo ...
or to defend colonies and trade routes, ''Izumo'' and her half-
sisters A sister is a woman or a girl who shares parents or a parent with another individual; a female sibling. The male counterpart is a brother. Although the term typically refers to a familial relationship, it is sometimes used endearingly to r ...
were intended as fleet scouts and to be employed in the battleline. The ship was long overall and between perpendiculars. She had a beam of and had an average
draft Draft, the draft, or draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a v ...
of . ''Izumo'' displaced at normal load and at
deep load 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 weig ...
. The ship had a
metacentric height The metacentric height (GM) is a measurement of the initial static stability of a floating body. It is calculated as the distance between the centre of gravity of a ship and its '' metacentre''. A larger metacentric height implies greater initial ...
of . Her crew consisted of 672 officers and enlisted men.Jentschura, Jung & Mickel, p. 74 ''Izumo'' had two 4-cylinder
triple-expansion steam engine A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) Cylinder (engine), cylinder, then ha ...
s, each driving a single propeller shaft. Steam for the engines was provided by 24 Belleville boilers and the engines were rated at a total of . The ship had a designed speed of and reached during 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 from . She carried up to of coalBrook 1999, p. 112 and could steam for at a speed of . The main armament for all of the "Six-Six Fleet" armored cruisers was four eight-inch guns in 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 fore and aft 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 ...
. 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 14 Elswick Ordnance Company "Pattern Z" quick-firing (QF), guns. Only four of these guns were not mounted in armored
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 main and upper decks and their mounts on the upper deck were protected by
gun shield A U.S. Marine manning an M240 machine gun equipped with a gun shield A gun shield is a flat (or sometimes curved) piece of armor designed to be mounted on a crew-served weapon such as a machine gun, automatic grenade launcher, or artillery pie ...
s. ''Izumo'' was also equipped with a dozen QF 12-pounder 12-cwt guns"Cwt" is the abbreviation for
hundredweight The hundredweight (abbreviation: cwt), formerly also known as the centum weight or quintal, is a British imperial and United States customary unit of weight or mass. Its value differs between the United States customary and British imperial sy ...
, 12 cwt referring to the weight of the gun.
and eight QF 2.5-pounder Yamauchi guns as close-range defense 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. The ship was equipped with four submerged
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. All of the "Six-Six Fleet" armored cruisers used the same armor scheme with some minor differences. The waterline belt of Krupp cemented armor ran the full length of the ship and its thickness varied from amidships to at the bow and stern. It had a height of , of which was normally underwater. The upper
strake On a vessel's Hull (watercraft), hull, a strake is a longitudinal course of Plank (wood), planking or Plate (metal), plating which runs from the boat's stem (ship), stempost (at the Bow (ship), bows) to the stern, sternpost or transom (nautica ...
of belt armor was thick and extended from the upper edge of the waterline belt to the main deck. It extended from the forward to the rear
barbette Barbettes are several types of gun emplacement in terrestrial fortifications or on naval ships. In recent naval usage, a barbette is a protective circular armour support for a heavy gun turret. This evolved from earlier forms of gun protection ...
. The ''Izumo'' class had oblique 127 mm armored bulkheads that closed off the ends of the central armored citadel. The barbettes, gun turrets and the front of the casemates were all 6 inches thick while the sides and rear of the casemates were protected by of armor. The deck was thick and the armor protecting the
conning tower A conning tower is a raised platform on a ship or submarine, often armoured, from which an officer in charge can conn (nautical), conn (conduct or control) the vessel, controlling movements of the ship by giving orders to those responsible for t ...
was in thickness.Chesneau & Kolesnik, p. 225


Construction and career

The contract for ''Izumo'', named after the eponymous province, was signed on 24 September 1897 with
Armstrong Whitworth Sir W G Armstrong Whitworth & Co Ltd was a major British manufacturing company of the early years of the 20th century. With headquarters in Elswick, Tyne and Wear, Elswick, Newcastle upon Tyne, Armstrong Whitworth built armaments, ships, locomot ...
. 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 shipyard in Elswick on 14 May 1899 and launched on 19 September. She was completed on 25 September 1900 and departed for Japan on 2 October under the command of
Captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader or highest rank officer of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police depa ...
, who had been appointed to supervise her construction and bring her back to Japan on 29 September 1899. ''Izumo'' arrived in
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 8 December and Inoue was confirmed in his command.Hackett & Kingsepp


Russo-Japanese War

At the start of the Russo-Japanese War, ''Izumo'', now under the command of Captain Miyaoka Naoki, was the flagship of Vice Admiral Kamimura Hikonojō, commander of the 2nd Fleet. She participated in the
Battle of Port Arthur The of 8–9 February 1904 marked the commencement of the Russo-Japanese War. It began with a surprise night attack by a squadron of Imperial Japanese Navy, Japanese destroyers on the neutral country, neutral Imperial Russian Navy, Russian fl ...
on 9 February 1904, when
Vice Admiral Vice admiral is a senior naval flag officer rank, usually equivalent to lieutenant general and air marshal. A vice admiral is typically senior to a rear admiral and junior to an admiral. Australia In the Royal Australian Navy, the rank of Vice ...
Tōgō Heihachirō , served as a '' gensui'' or admiral of the fleet in the Imperial Japanese Navy and became one of Japan's greatest naval heroes. As Commander-in-Chief of the Combined Fleet during the Russo-Japanese War of 1904–1905, he successfully confine ...
led the
Combined Fleet The was the main sea-going component of the Imperial Japanese Navy. Until 1933, the Combined Fleet was not a permanent organization, but a temporary force formed for the duration of a conflict or major naval maneuvers from various units norm ...
in an attack on the Russian ships of the Pacific Squadron anchored just outside Port Arthur. Tōgō had expected the surprise night attack by his destroyers to be much more successful than it was, anticipating that the Russians would be badly disorganized and weakened, but they had recovered from their surprise and were ready for his attack. The Japanese ships were spotted by the
protected cruiser Protected cruisers, a type of cruiser of the late 19th century, took their name from the armored deck, which protected vital machine-spaces from fragments released by explosive shells. Protected cruisers notably lacked a belt of armour alon ...
, which was patrolling offshore and alerted the Russians. Tōgō chose to attack the Russian coastal defenses with his main armament and engage the ships with his secondary guns. Splitting his fire proved to be a poor decision as the Japanese eight- and six-inch guns inflicted little damage on the Russian ships, which concentrated all their fire on the Japanese ships with some effect. Although many ships on both sides were hit, Russian casualties numbered some 150, while the Japanese suffered roughly 90 killed and wounded before Tōgō disengaged. In early March, Kamimura was tasked to take the reinforced 2nd Division north and make a diversion off
Vladivostok Vladivostok ( ; , ) is the largest city and the administrative center of Primorsky Krai and the capital of the Far Eastern Federal District of Russia. It is located around the Zolotoy Rog, Golden Horn Bay on the Sea of Japan, covering an area o ...
. While scouting for Russian ships in the area, the Japanese cruisers bombarded the harbor and defenses of Vladivostok on 6 March to little effect. Upon their return to Japan a few days later, the 2nd Division was ordered to escort the transports ferrying the Imperial Guards Division to Korea and then to join the ships blockading Port Arthur. Kamimura was ordered north in mid-April to cover the
Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it ...
and defend the
Korea Strait The Korea Strait is a strait, sea passage in East Asia between the Korean Peninsula and Japan. It connects the East China Sea, the Yellow Sea and the Sea of Japan in the northwest Pacific Ocean. The strait is split by Tsushima Island into two par ...
against any attempt by the Vladivostok Independent Cruiser Squadron, under the command of Rear Admiral Karl Jessen, to break through and unite with the Pacific Squadron. The two units narrowly missed each other on the 24th in heavy fog and the Japanese proceeded to Vladivostok where they laid several
minefield A land mine, or landmine, is an explosive weapon often concealed under or camouflaged on the ground, and designed to destroy or disable enemy targets as they pass over or near it. Land mines are divided into two types: anti-tank mines, wh ...
s before arriving back at
Wonsan Wonsan (), previously known as Wonsanjin (), is a port city and naval base located in Kangwon Province (North Korea), Kangwon Province, North Korea, along the eastern side of the Korean Peninsula, on the Sea of Japan and the provincial capital. ...
on the 30th. The division failed to intercept the Russian squadron as it attacked several transports south of Okinoshima Island on 15 June due to heavy rain and fog. The Russians sortied again on 30 June and Kamimura finally was able to intercept them the next day near Okinoshima. The light was failing when they were spotted and the Russians were able to disengage in the darkness. Jessen's ships sortied again on 17 July headed for the eastern coast of Japan to act as a diversion and pull Japanese forces out of the Sea of Japan and the
Yellow Sea The Yellow Sea, also known as the North Sea, is a marginal sea of the Western Pacific Ocean located between mainland China and the Korean Peninsula, and can be considered the northwestern part of the East China Sea. Names It is one of four ...
. The Russian ships passed through
Tsugaru Strait The is a strait between Honshu and Hokkaido in northern Japan connecting the Sea of Japan with the Pacific Ocean. It was named after the western part of Aomori Prefecture. The Seikan Tunnel passes under it at its narrowest point 12.1 miles ...
two days later and began capturing ships bound for Japan. The arrival of the Russians off
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 ...
on the 24th caused the Naval General Staff to order Kamimura to sail for Cape Toi Misaki,
Kyūshū is the third-largest island of Japan's four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa and the other Ryukyu (''Nansei'') Islands). In the past, it has been known as , and . The historical regio ...
, fearing that Jessen would circumnavigate Japan to reach Port Arthur. Two days later he was ordered north to the Kii Channel and then to Tokyo Bay on the 28th. The General Staff finally ordered him back to Tsushima Island on the 30th; later that day he received word that Jessen's ships had passed through the Tsugaru Strait early that morning and reached Vladivostok on 1 August.


Battle off Ulsan

On 10 August, the ships at Port Arthur attempted a breakout to Vladivostok, but were turned back in the
Battle of the Yellow Sea The Battle of the Yellow Sea (; ) was a naval battle of the Russo-Japanese War, fought on 10 August 1904. In the Russian Navy, it was referred to as the Battle of 10 August. The battle foiled an attempt by the Russian fleet at Lüshunkou (Port ...
. Jessen was ordered to rendezvous with them, but the order was delayed. His three armored cruisers, , , and , had to raise steam, so he did not sortie until the evening of 13 August. By dawn he had reached Tsushima, but turned back when he failed to see any ships from the Port Arthur squadron. north of the island he encountered Kamimura's squadron, which consisted of four modern armored cruisers, , , , and ''Izumo''. The two squadrons had passed during the night without spotting one another and each had reversed course around first light. This put the Japanese ships astride the Russian route to Vladivostok. Jessen ordered his ships to turn to the northeast when he spotted the Japanese at 05:00 and they followed suit, albeit on a slightly converging course. Both sides opened fire around 05:23 at a range of . The Japanese ships concentrated their fire on ''Rurik'', the rear ship of the Russian formation. She was hit fairly quickly and began to fall astern of the other two ships. Jessen turned southeast in an attempt to open the range, but this blinded the Russian gunners with the rising sun and prevented any of their broadside guns from bearing on the Japanese. About 06:00, Jessen turned 180° to starboard in an attempt to reach the Korean coast and to allow ''Rurik'' to rejoin the squadron. Kamimura followed suit around 06:10, but turned to port, which opened the range between the squadrons. ''Azuma'' then developed engine problems and the Japanese squadron slowed to conform with her best speed. Firing recommenced at 06:24 and ''Rurik'' was hit three times in the stern, flooding her steering compartment; she had to be steered with her engines. Her speed continued to decrease, further exposing her to Japanese fire, and her steering jammed to port around 06:40. Jessen made another 180° turn in an attempt to interpose his two ships between the Japanese and ''Rurik'', but the latter ship suddenly turn to starboard and increased speed and passed between Jessen's ships and the Japanese. Kamimura turned 180° as well so that both squadrons were heading southeast on parallel courses, but Jessen quickly made another 180° turn so that they headed on opposing courses. The Russians reversed course for the third time around 07:45 in another attempt to support ''Rurik'' although ''Rossia'' was on fire herself; her fires were extinguished about twenty minutes later. Kamimura circled ''Rurik'' to the south at 08:00 and allowed the other two Russian ships to get to his north and gave them an uncontested route to Vladivostok. Despite this, Jessen turned back once more at 08:15 and ordered ''Rurik'' to make her own way back to Vladivostok before turning north at his maximum speed, about .Brook 2000, p. 43 About this time Kamimura's two elderly protected cruisers, and , were approaching from the south. Their arrival allowed Kamimura to pursue Jessen with all of his armored cruisers while the two new arrivals dealt with ''Rurik''. They fought a running battle with the Russians for the next hour and a half; scoring enough hits on them to force their speed down to . The Japanese closed to a minimum of about , but Kamimura then opened the range up to . About 10:00, Kamimura's gunnery officer erroneously informed him that ''Izumo'' had expended three-quarters of her ammunition and he turned back after a five-minute rapid-fire barrage. He did not wish to leave the Tsushima Strait unguarded and thought that he could use his remaining ammunition on ''Rurik''. By this time she had been sunk by ''Naniwa'' and ''Takachiho''. They had radioed Kamimura that she was sunk, but he did not receive the message. Shortly after the Japanese turned back, ''Gromoboi'' and ''Rossia'' were forced to heave-to to make repairs. None of the Japanese ships were seriously damaged; despite ''Izumo'' receiving over 20 hits, she only suffered 3 men killed and 16 wounded during the battle. She began repairs at Sasebo Naval Arsenal in mid-September. On 26 January 1905, Kamimura hoisted his flag again in ''Izumo'' at Sasebo and then escorted several troop convoys to Wonsan on February. On 13 April, the 2nd Division, including the armored cruisers ''Tokiwa'' and , sailed to escort minelayers as they laid 715 mines off Vladivostok.


Battle of Tsushima

As the Russian 2nd and 3rd Pacific Squadrons approached Japan on 27 May, having sailed from the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...
, they were spotted by patrolling Japanese ships early that morning, but visibility was limited and radio reception poor. The preliminary reports were enough to cause Tōgō to order his ships to put to sea and the 2nd Division spotted the Russian ships under the command of Vice Admiral Zinovy Rozhestvensky at around 11:30. Kamimura closed to about a range of before sheering off under fire to join Tōgō's battleships. ''Izumo'' was leading the 2nd Division when Tōgō opened fire on the 2nd Pacific Squadron at 14:10 and, like most of the ships in the division, engaged the battleship which was forced to fall out of formation at 14:50 and sank 20 minutes later. By this time the Russian formation was in disorder and ''Knyaz Suvorov'' suddenly appeared out of the mist at 15:35 at a range of about . All of Kamimura's ships engaged her for five minutes or so with ''Azuma'' and the armored cruiser also firing torpedoes at the Russian ship without effect. After 17:30 Kamimura led his division in a fruitless pursuit of some of the Russian cruisers, leaving Tōgō's battleships to their own devices. He abandoned his chase around 18:03 and turned northwards to rejoin Tōgō. His ships spotted the rear of the Russian battleline around 18:30 and opened fire when the range closed to . Nothing is known of any effect on the Russians and they ceased fire by 19:30 and rejoined Tōgō at 20:08 as night was falling. The surviving Russian ships were spotted the next morning and the Japanese ships opened fire around 10:30, staying beyond the range at which the Russian ships could effectively reply. Rear Admiral Nikolai Nebogatov therefore decided to surrender his ships as he could neither return fire nor close the range. Over the course of the battle, ''Izumo'' was struck by five large shells, mostly 12-inch, and three smaller shells, mostly 6-inch. They caused only minor damage, although one 12-inch shell, which pierced a boiler uptake, could have disabled all of the middle boilers had it detonated. The shells killed 4 men and wounded 26 others. As the IJN was preparing to invade
Sakhalin Sakhalin ( rus, Сахали́н, p=səxɐˈlʲin) is an island in Northeast Asia. Its north coast lies off the southeastern coast of Khabarovsk Krai in Russia, while its southern tip lies north of the Japanese island of Hokkaido. An islan ...
Island in early July, Kamimura's 2nd Division, now reduced to ''Iwate'', ''Izumo'', and ''Tokiwa'', was tasked to defend the Korea Strait before it escorted troops that made an amphibious landing in northeastern Korea. In mid-August, the division covered the landing at
Chongjin Chŏngjin (; ) is the capital of North Korea's North Hamgyong Province (함경북도) and the country's List of cities in North Korea, third-largest city. Sometimes called the City of Iron, it is located in the northeast of the country. History ...
, closer to the Russian border. On 20 September 1909, under command of Captain Takeshita Isamu, ''Izumo'' 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 ...
for the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
to participate in the Portola Festival at
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, a citywide fair held on 19–23 October to mark the 140th anniversary of the Portolà expedition, the first recorded Spanish (and European) land entry and exploration of present-day California, and to proclaim to the world that San Francisco was recovered from its devastating 1906 earthquake.
Lieutenant A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a Junior officer, junior commissioned officer rank in the armed forces of many nations, as well as fire services, emergency medical services, Security agency, security services ...
Prince
Shimazu Tadashige Prince , was the son of Shimazu Tadayoshi and 30th head of the Shimazu clan. He was a naval officer, and rear admiral in the Imperial Japanese Navy. His wife was the daughter of Tokudaiji Sanetsune. Biography A native of Kagoshima, Shimazu was ...
was assigned to the ship during this visit.
Lieutenant A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a Junior officer, junior commissioned officer rank in the armed forces of many nations, as well as fire services, emergency medical services, Security agency, security services ...
Allen B. Reed, engineering officer on the and the future commissioning captain of the heavy cruiser was assigned as Captain Takeshita's escort during the ship's visit at San Francisco. ''Izumo'' made port calls in
Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ...
,
Monterrey Monterrey (, , abbreviated as MtY) is the capital and largest city of the northeastern Mexican state of Nuevo León. It is the ninth-largest city and the second largest metropolitan area, after Greater Mexico City. Located at the foothills of th ...
, Santa Barbara, and
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
en route. On 12 November 1913, ''Izumo'' was ordered to patrol the west coast of
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
to safeguard Japanese interests and nationals during the
Mexican Revolution The Mexican Revolution () was an extended sequence of armed regional conflicts in Mexico from 20 November 1910 to 1 December 1920. It has been called "the defining event of modern Mexican history". It saw the destruction of the Federal Army, its ...
.


World War I

When Japan declared war on the Central Powers in August 1914, ''Izumo'' was still off the Mexican coast and was ordered to protect Allied shipping there and search for German commerce raiders.Saxon On 1 November, the ship, then off San Francisco, was ordered to join a British task force commanded by Admiral Sir George Patey off
San Clemente Island San Clemente Island (Tongva: ''Kinkipar''; Spanish: ''Isla de San Clemente'') is the southernmost of the Channel Islands of California. It is owned and operated by the United States Navy, and is a part of Los Angeles County. It is administer ...
that included the
battlecruiser The battlecruiser (also written as battle cruiser or battle-cruiser) was a type of capital ship of the first half of the 20th century. These were similar in displacement, armament and cost to battleships, but differed in form and balance of att ...
and the
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 thi ...
. After the German gunboat was interned by the Americans on 8 November, the ex-Russian battleship ''Hizen'' and ''Asama'', which had been patrolling off
Honolulu Honolulu ( ; ) is the List of capitals in the United States, capital and most populous city of the U.S. state of Hawaii, located in the Pacific Ocean. It is the county seat of the Consolidated city-county, consolidated City and County of Honol ...
, Hawaii, to prevent the German ship from leaving, rendezvoused with the other ships of the American Expeditionary Squadron at
Magdalena Bay Magdalena Bay () is a long bay in Comondú Municipality along the western coast of the Mexico, Mexican States of Mexico, state of Baja California Sur. It is protected from the Pacific Ocean by the unpopulated sandy barrier islands of Isla Magda ...
,
Baja California Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...
on 22 November. The squadron, now commanded by Rear Admiral Moriyama Keizaburo in ''Izumo'', then headed south to search along the western coast of South America for German ships. On 11 December, after the receiving the news of the British victory in the
Battle of the Falkland Islands The Battle of the Falkland Islands was a First World War naval action between the British Royal Navy and Imperial German Navy on 8 December 1914 in the South Atlantic. The British, after their defeat at the Battle of Coronel on 1 November, ...
, the squadron moved north to search off the western coast of
Central America Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually ...
and then Mexican and U.S. waters in January.Estes During a patrol off the coast of Oregon, the ''Izumo'' picked up an SOS from the steam schooner '' Francis H. Leggett'', but did not provide aid due to the presence of a German cruiser nearby. The ''Leggett'' later sank, with only 2 survivors out of 62 on board. While searching Baja California, ''Asama'' was badly damaged when she struck an uncharted rock on 31 January. ''Izumo'', delayed by poor communications, arrived on 12 February and Moriyama radioed for
repair The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installat ...
and salvage ships to be sent from Japan. ''Izumo'' was relieved by ''Tokiwa'' on 19 March and the ship returned home. ''Izumo'' relieved the protected cruiser in June 1917 at
Malta Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...
as the flagship of Rear Admiral Kōzō Satō, commander of the Second Special Mission Squadron that controlled the Japanese
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
s that escorted convoys in the
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 east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...
. In December 1918, ''Izumo'', accompanied by the destroyers and , sailed from Malta to
Scapa Flow Scapa Flow (; ) is a body of water in the Orkney Islands, Scotland, sheltered by the islands of Mainland, Graemsay, Burray,S. C. George, ''Jutland to Junkyard'', 1973. South Ronaldsay and Hoy. Its sheltered waters have played an impor ...
to assume control of seven captured German
U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...
s as prizes of war. They returned to Malta with the U-boats in March 1919 and the armored cruiser accompanied eight destroyers and the U-boats to Japan, while ''Izumo'' made port calls at
Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...
,
Genoa Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...
and
Marseille Marseille (; ; see #Name, below) is a city in southern France, the Prefectures in France, prefecture of the Departments of France, department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur Regions of France, region. Situated in the ...
before arriving in Japan with the remaining destroyers on 2 July 1919.


Interwar years

''Izumo'' participated in the 1919 Naval Review by
Emperor Taishō , posthumously honored as , was the 123rd emperor of Japan according to the traditional order of succession, reigning from 1912 until his death in 1926. His reign, known as the Taishō era, was characterized by a liberal and democratic shift in ...
. She was re-designated a 1st class coast-defense ship on 1 September 1921 and used primarily for training duties in long-distance oceanic navigation and officer training for cadets in the Imperial Japanese Navy Academy. In this capacity, she participated six voyages in the 1920s and 1930s to
Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
, North and
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...
, and
Oceania Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
, including a circumnavigation of the globe from August 1921 to April 1922 with ''Yakumo''. Two of the naval cadets that participated in this cruise were Princes Kuni Asaakira and Kachō Hirotada. While in
Vancouver Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the cit ...
,
British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...
, on 7 February 1925, on one of these cruises, a
tugboat A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, suc ...
collided with one of the ship's boats at night, drowning 11 crewmen. In 1924, four of ''Izumo''s 12-pounder guns were removed, as were all of her QF 2.5-pounder guns, and a single 8 cm/40 3rd Year Type anti-aircraft (AA) gun was added. Refitted again in 1930–31, her torpedo tubes were removed as were all of her main deck 6-inch guns and their casemates plated over; she now carried only four 12-pounders. In 1935 her boilers were replaced by six
Kampon The was the externally operating division of the Ministry of the Navy of Japan responsible for the administration of naval vessel construction. From 1923 onward, it took on the role of a research institution for the research and development of n ...
water-tube boiler A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generat ...
s with an output of only which reduced her top speed to . She now carried 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 increased her deep displacement to .


China service and World War II

On 2 February 1932, during the First Shanghai Incident, ''Izumo'' became the flagship of the newly re-established 3rd Fleet under Admiral Kichisaburō Nomura and arrived in Shanghai six days later. In 1934, ''Izumo'' was equipped to operate a
floatplane A floatplane is a type of seaplane with one or more slender floats mounted under the fuselage to provide buoyancy. By contrast, a flying boat uses its fuselage for buoyancy. Either type of seaplane may also have landing gear suitable for land, ...
at the Sasebo Naval Arsenal. Shortly after the beginning of the
Second Sino-Japanese War The Second Sino-Japanese War was fought between the Republic of China (1912–1949), Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part ...
in July 1937, ''Izumo'' was attacked on 14 August 1937 in a series of raids by Chinese Air Force aircraft during the
Battle of Shanghai The Battle of Shanghai ( zh, t=淞滬會戰, s=淞沪会战, first=t, p=Sōng hù huìzhàn) was a major battle fought between the Empire of Japan and the Republic of China (1912–1949), Republic of China in the Chinese city of Shanghai during ...
. Most of the bombs landed in the river without effect, but two bombs landed among spectators, killing hundreds. ''Izumo''s Nakajima E4N floatplane and another from the light cruiser managed to get into the air and they claimed to have shot down one Curtiss Hawk
biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...
fighter and a Northrop Gamma bomber. Two days later, her E4N claimed to have shot down another Hawk. ''Izumo'' was attacked that same day by a Chinese torpedo boat, but the torpedoes missed and the boat was abandoned by its crew. The ship provided
naval gunfire support Naval gunfire support (NGFS), also known as naval surface fire support (NSFS), or shore bombardment, is the use of naval artillery to provide fire support for amphibious assault and other troops operating within their range. NGFS is one of seve ...
to Japanese troops ashore during the battle. ''Izumo'' was repeatedly attacked without effect by Chinese aircraft for the duration of the Battle of Shanghai. Still in
Shanghai Shanghai, Shanghainese: , Standard Chinese pronunciation: is a direct-administered municipality and the most populous urban area in China. The city is located on the Chinese shoreline on the southern estuary of the Yangtze River, with the ...
at the beginning of the Pacific War on 8 December 1941, ''Izumo'' captured the American
river gunboat A river gunboat is a type of gunboat adapted for river operations. River gunboats required shallow draft for river navigation. They would be armed with relatively small caliber cannons, or a mix of cannons and machine guns. If they carried more ...
and assisted in sinking the British river gunboat . On 31 December, the cruiser struck a mine in
Lingayen Gulf Lingayen Gulf is a large gulf on northwestern Luzon in the Philippines, stretching . It is framed by the provinces of Pangasinan and La Union and sits between the Zambales Mountains and the Cordillera Central (Luzon), Cordillera Central. The Agno ...
while supporting Japanese forces during the Philippines Campaign. She was towed to
Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
in February 1942 for repairs. ''Izumo'' was re-classified as a 1st-class cruiser on 1 July. She returned to Japan in late 1943 and was reclassified as a training shipFukui, p. 4 for the
Kure Naval District was the second of four main administrative districts of the pre-war Imperial Japanese Navy. Its territory included the Inland Sea of Japan and the Pacific coasts of southern Honshū from Wakayama to Yamaguchi prefectures, eastern and northern K ...
. On 19 March 1945, ''Izumo'' was attacked by American carrier aircraft off
Etajima , also called , ''Nomijima'', ''Nomi Island'', or is an island in Hiroshima Bay located in southwestern Hiroshima Prefecture, Japan. The mess with island name originates from the ancient (and possibly legendary) strait at now town . Geography T ...
, although they failed to inflict any damage. Shortly afterwards, her 8-inch guns were replaced by four Type 89
dual-purpose gun A dual-purpose gun is a naval artillery mounting designed to engage both surface and air targets. Description Second World War-era capital ships had four classes of artillery: the heavy main battery, intended to engage opposing battleships and ...
s in two twin mounts and four of her remaining 6-inch guns were removed. Her light anti-aircraft armament was significantly reinforced by the addition of 14 license-built Hotchkiss 25-millimeter Type 96 light AA guns in two triple, two twin, and four single-gun mounts and two 13.2-millimeter Hotchkiss machine guns in single mounts. The ship was damaged by an American mine on 9 April off
Hiroshima is the capital of Hiroshima Prefecture in Japan. , the city had an estimated population of 1,199,391. The gross domestic product (GDP) in Greater Hiroshima, Hiroshima Urban Employment Area, was US$61.3 billion as of 2010. Kazumi Matsui has b ...
.Rohwer, p. 408 ''Izumo'' was not attacked on the first day of the American aerial attack on Kure on 24 July 1945, but she was near missed three times four days later. The shockwave from the detonations sprang the ship's seams and the resulting flooding caused her to
capsize Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action, instability or wind force beyond the angle of positive static stability or it is Turtling (sailing), upside down in the water. The act of reco ...
at coordinates . She was removed from the navy list on 20 November and her
hulk The Hulk is a superhero appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in the debut issue of ''The Incredible Hulk (comic book), The Incredible Hulk ...
was raised and scrapped in 1947 by the Harima Dock Company.


Notes


Footnotes


References

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External links

{{DEFAULTSORT:Izumo Izumo-class cruisers Ships built on the River Tyne 1899 ships Russo-Japanese War cruisers of Japan World War I cruisers of Japan Second Sino-Japanese War cruisers of Japan World War II cruisers of Japan Cruisers sunk by aircraft Maritime incidents in July 1945 Ships sunk by US aircraft Shipwrecks in the Inland Sea Ships built by Armstrong Whitworth Bombing of Kure