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 2-vessel Ibuki class of armoured cruisers in 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...

. Ibuki was named after Mount Ibuki

Mount Ibuki

is a high mountain, on the border of Maibara, Shiga Prefecture, and Ibigawa, Gifu Prefecture, Japan. It is one of the 100 Famous Japanese Mountains, and is also included on the lists of the 100 Kinki Mountains the 50 Shiga Mountains...

 located between Gifu

Gifu Prefecture

is a prefecture located in the Chūbu region of central Japan. Its capital is the city of Gifu.Located in the center of Japan, it has long played an important part as the crossroads of Japan, connecting the east to the west through such routes as the Nakasendō...

 and Shiga

Shiga Prefecture

is a prefecture of Japan, which forms part of the Kansai region on Honshu Island. The capital is the city of Ōtsu.- History :Shiga was known as Ōmi Province or Gōshū before the prefectural system was established...

 prefectures in Honshū

Honshu

is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

. On 28 August 1912, Ibuki and her sister ship

Sister ship

A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

  were re-classified as battlecruiser

Battlecruiser

Battlecruisers were large capital ships built in the first half of the 20th century. They were developed in the first decade of the century as the successor to the armoured cruiser, but their evolution was more closely linked to that of the dreadnought battleship...

s by the Japanese navy.

Design and construction

The Ibuki class was planned 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...

 and was authorized under the 1904 Supplemental Naval Budget, at the same time as the armoured cruiser , but with heavier guns and with the new geared turbine engines which promised more power and hence, more speed. However, problems with the turbine engines delayed the construction of the Ibuki, and in the end, construction began almost two years later than her sister ship, the Kurama, which used standard reciprocating engine

Reciprocating engine

A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types...

s.

Ibuki was built at Kure Naval Arsenal

Kure Naval Arsenal

was one of four principal naval shipyards owned and operated by the Imperial Japanese Navy. -History:The Kure Naval District was established at Kure, Hiroshima in 1889, as the second of the naval districts responsible for the defense of the Japanese home islands along with the establishment of the...

. She was laid down on 22 May 1907, launched on 21 October 1907, and commissioned on 11 November 1907.

Operational history

Shortly after commissioning, Ibuki was sent on a voyage to Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

 to attend the coronation

Coronation

A coronation is a ceremony marking the formal investiture of a monarch and/or their consort with regal power, usually involving the placement of a crown upon their head and the presentation of other items of regalia...

 ceremony of the Thai king Rama VI Vajiravudh

Vajiravudh

Phra Bat Somdet Phra Poramentharamaha Vajiravudh Phra Mongkut Klao Chao Yu Hua , or Phra Bat Somdet Phra Ramathibodi Si Sintharamaha Vajiravudh Phra Mongkut Klao Chao Yu Hua , or Rama VI was the sixth monarch of Siam under the House of Chakri, ruling from 1910 until his death...

.

Ibuki played an important role in 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...

 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...

, in protecting British merchant shipping in the South Pacific

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 and in the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

, and participating in the hunt for the German East Asiatic Squadron and the . Ibuki initially escorted a convoy of 10 troop transports crossing the Tasman Sea escorted with HMS Pyramus

HMS Pyramus

Several ships of the Royal Navy have been named HMS Pyramus. was 28-gun frigate captured from the Denmark–Norway Navy at the Battle of Copenhagen, and sold in c1880. was a Pelorus-class protected cruiser launched in 1897, and sold in 1920....

 to Albany, Western Australia

Albany, Western Australia

Albany is a port city in the Great Southern region of Western Australia, some 418 km SE of Perth, the state capital. As of 2009, Albany's population was estimated at 33,600, making it the 6th-largest city in the state....

. Together with HMAS Sydney

HMAS Sydney (1912)

HMAS Sydney was a Chatham class light cruiser of the Royal Australian Navy . Laid down in 1911 and launched in 1912, the cruiser was commissioned into the RAN in 1913....

, Ibuki escorted the ANZACs, consisting of 20,000 men and 7,500 horses, across the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

.
Ibuki was the only protection for the ANZACs when Sydney participated in the Battle of Cocos

Battle of Cocos

The Battle of Cocos took place on 9 November 1914 during the First World War off the Cocos Islands, in the north east Indian Ocean. The German light cruiser attacked the British cable station on Direction Island and was engaged several hours later by the Australian light cruiser...

. The commander of Ibuki, Captain Katoo Kanji had wanted the honour of engaging the Emden, unfurled the battle ensign and strapped down the battlecruiser's deck, but despite being a superior ship to Sydney was ordered to stand down and stay with the convoy. This was later celebrated by the Royal Australian Navy

Royal Australian Navy

The Royal Australian Navy is the naval branch of the Australian Defence Force. Following the Federation of Australia in 1901, the ships and resources of the separate colonial navies were integrated into a national force: the Commonwealth Naval Forces...

 as the "samurai spirit of the Ibuki" whenever Imperial Japanese ships visited Australia in subsequent years.

Decommissioning and fate

After the war, Ibuki fell victim to the Washington Naval Treaty

Washington Naval Treaty

The Washington Naval Treaty, also known as the Five-Power Treaty, was an attempt to cap and limit, and "prevent 'further' costly escalation" of the naval arms race that had begun after World War I between various International powers, each of which had significant naval fleets. The treaty was...

 and was sold for scrap on 20 September 1923, after a short service life of only 15 years.

Her guns were salvaged, and used in the shore batteries at Hakodate in Hokkaidō

Hokkaido

, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

 and along the Tsugaru Strait

Tsugaru Strait

is a channel 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...

 separating Honshū

Honshu

is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

and Hokkaidō.