was an armoured cruiser of the Imperial Japanese Navy

Imperial Japanese Navy

The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...

, acquired as a prize of war

Prize of war

A prize of war is a piece of military property seized by the victorious party after a war or battle, typically at sea. This term was used nearly exclusively in terms of a captured ship during the 18th and 19th centuries....

 during the Russo-Japanese War

Russo-Japanese War

The Russo-Japanese War was "the first great war of the 20th century." It grew out of rival imperial ambitions of the Russian Empire and Japanese Empire over Manchuria and Korea...

 from the Imperial Russian Navy

Imperial Russian Navy

The Imperial Russian Navy refers to the Tsarist fleets prior to the February Revolution.-First Romanovs:Under Tsar Mikhail Feodorovich, construction of the first three-masted ship, actually built within Russia, was completed in 1636. It was built in Balakhna by Danish shipbuilders from Holstein...

, where it was originally known as the . It was then renamed after Mount Aso

Mount Aso

is the largest active volcano in Japan, and is among the largest in the world. It stands in Aso Kujū National Park in Kumamoto Prefecture, on the island of Kyūshū. Its peak is 1592 m above sea level. Aso has one of the largest caldera in the world...

, an active volcano on the island of Kyūshū

Kyushu

is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

.

Background

The Bayan was built by the Société Nouvelle des Forges et Chantiers de la Méditerranée

Société Nouvelle des Forges et Chantiers de la Méditerranée

The Société Nouvelle des Forges et Chantiers de la Méditerranée was a French shipbuilding company. The 'Société des Forges et Chantiers de la Méditerranée' was founded in 1853 by Philip Taylor, while a new company, the 'Nouvelle' société, was founded in 1856. It had shipyards in La Seyne-sur-Mer,...

 in Toulon

Toulon

Toulon is a town in southern France and a large military harbor on the Mediterranean coast, with a major French naval base. Located in the Provence-Alpes-Côte-d'Azur region, Toulon is the capital of the Var department in the former province of Provence....

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. It was the lead ship

Lead ship

The lead ship or class leader is the first of a series or class of ships all constructed according to the same general design. The term is applicable military ships and larger civilian craft.-Overview:...

 in the of three vessels, and was one of the most advanced warships in the Russian Far East Fleet. The Bayan played an active role in the early stages of the Russo-Japanese War, but was trapped by the Siege of Port Arthur

Siege of Port Arthur

The Siege of Port Arthur , 1 August 1904 – 2 January 1905, the deep-water port and Russian naval base at the tip of the Liaotung Peninsula in Manchuria, was the longest and most violent land battle of the Russo-Japanese War....

 and subsequently sunk by Japanese artillery.

At the end of the Russo-Japanese War, Port Arthur

Lüshunkou

Lüshunkou is a district in the municipality of Dalian, Liaoning province, China. Also called Lüshun City or Lüshun Port, it was formerly known as both Port Arthur and Ryojun....

 was in Japanese hands, and Japanese engineers raised the wreck of the Bayan and towed it to Maizuru

Maizuru, Kyoto

is a city located in Kyōto, Japan, on an inlet of the Sea of Japan.As of 2008, the city has an estimated population of 89,626 and the density of 264 persons per km². The total area is .The city was founded on May 27, 1943....

, where it was repaired and commissioned it into the Imperial Japanese Navy as the 2nd class cruiser

Cruiser

A cruiser is a type of warship. The term has been in use for several hundreds of years, and has had different meanings throughout this period...

 Aso on 22 August 1905. Its new name came from Mount Aso

Mount Aso

is the largest active volcano in Japan, and is among the largest in the world. It stands in Aso Kujū National Park in Kumamoto Prefecture, on the island of Kyūshū. Its peak is 1592 m above sea level. Aso has one of the largest caldera in the world...

, a noted volcano

Volcano

2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...

 in Kyūshū

Kyushu

is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

. It is a tribute to its excellent design that it was able to absorb seven hits on its deck (of which five penetrated) and five hits on the side of its hull from the Japanese 280 mm siege guns (more than any other battleship or cruiser in the Russian squadron), and still could be repaired and brought back into service.

Service record

After being placed into service on 30 November 1908, the Aso was assigned to patrol duty off of the China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 coast. The following year, together with the , the Aso was assigned to a training cruise to North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 by way of Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

, and in 1910, made a similar long distance navigational training voyage south, to Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 by way of the Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

.

From 1911-1915, the Aso was based in Yokosuka

Yokosuka, Kanagawa

is a city located in Kanagawa, Japan. As of 2010, the city had an estimated population of 419,067 and a population density of 4,160 people per km². It covered an area of 100.62 km²...

, patrolling Japanese home waters. However, with the start of World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, the Aso was assigned longer patrols further south, protecting commercial shipping against raids by the Imperial German Navy

Kaiserliche Marine

The Imperial German Navy was the German Navy created at the time of the formation of the German Empire. It existed between 1871 and 1919, growing out of the small Prussian Navy and Norddeutsche Bundesmarine, which primarily had the mission of coastal defense. Kaiser Wilhelm II greatly expanded...

, as part of Japan's contribution to the Allied war effort under the Anglo-Japanese Alliance

Anglo-Japanese Alliance

The first was signed in London at what is now the Lansdowne Club, on January 30, 1902, by Lord Lansdowne and Hayashi Tadasu . A diplomatic milestone for its ending of Britain's splendid isolation, the alliance was renewed and extended in scope twice, in 1905 and 1911, before its demise in 1921...

.

On 1 April 1920, the Aso was re-classified as a minelayer

Minelayer

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

, with a total of 512 naval mine

Naval mine

A naval mine is a self-contained explosive device placed in water to destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, an enemy vessel...

s deployed on its upper and middle deck. From 28 August 1922 to 9 September 1922, the Aso was used for coastal patrol and to transport troops during the Siberian Intervention

Siberian Intervention

The ', or the Siberian Expedition, of 1918–1922 was the dispatch of troops of the Entente powers to the Russian Maritime Provinces as part of a larger effort by the western powers and Japan to support White Russian forces against the Bolshevik Red Army during the Russian Civil War...

. At the time of the Great Kantō earthquake

1923 Great Kanto earthquake

The struck the Kantō plain on the Japanese main island of Honshū at 11:58:44 am JST on September 1, 1923. Varied accounts hold that the duration of the earthquake was between 4 and 10 minutes...

 of September 1923, the Aso was used for disaster relief, and for transport of supplies and refugees.

The Aso was removed from the active list on 1 April 1931 and subsequently sunk as a target by the guns of the , torpedo

Torpedo

The modern torpedo is a self-propelled missile weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with it or in proximity to it.The term torpedo was originally employed for...

es from and bombs from dive bomber

Dive bomber

A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target reduces the distance the bomb has to fall, which is the primary factor in determining the accuracy of the drop...

s sent from Yokosuka on 4 August 1932 offshore from Izu Ōshima

Izu Oshima

is a volcanic island in the Izu Islands and administered by the Tokyo Metropolitan government, Japan, lies about 100 km south of Tokyo, 22 km east of the Izu Peninsula and 36 km southwest of Bōsō Peninsula. serves as the local government of the island...

island.