was an early steam gunboat

Gunboat

A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...

, serving in the fledgling 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...

. She was the third vessel to be completed in the four vessel , and was named after Mount Atago

Mount Atago

is a 924m mountain in the northwestern part of Ukyo-ku, in the city of Kyoto, Kyoto Prefecture, Japan....

 in Kyoto

Kyoto

is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

.

History

Atago was a iron-ribbed, iron-sheathed, two-masted gunboat with a horizontal double expansion reciprocating steam engine

Steam engine

A steam engine is a heat engine that performs mechanical work using steam as its working fluid.Steam engines are external combustion engines, where the working fluid is separate from the combustion products. Non-combustion heat sources such as solar power, nuclear power or geothermal energy may be...

 with two boilers driving two screws. Atago was laid down at the Yokosuka Naval Arsenal

Yokosuka Naval Arsenal

was one of four principal naval shipyards owned and operated by the Imperial Japanese Navy, and was located at Yokosuka city, Kanagawa prefecture on Tokyo Bay, south of Yokohama...

 on July 17, 1886 and launched on June 18, 1887. She was completed on March 2, 1889.

Atago saw combat service in the First Sino-Japanese War

First Sino-Japanese War

The First Sino-Japanese War was fought between Qing Dynasty China and Meiji Japan, primarily over control of Korea...

, patrolling between Korea

Korea

Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

, Dairen and played a role at the Battle of Weihaiwei

Battle of Weihaiwei

The Battle of Weihaiwei was a 23 day siege with a major land and naval component during the First Sino-Japanese War. It took place between 20 January and 12 February 1895 in Weihai, Shandong Province, China) between the forces of Meiji Japan and Qing China...

.

On 21 March 1898, Atago was re-designated as a second-class gunboat

Gunboat

A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.-History:...

, and was used for coastal survey and patrol duties. During the Boxer Rebellion

Boxer Rebellion

The Boxer Rebellion, also called the Boxer Uprising by some historians or the Righteous Harmony Society Movement in northern China, was a proto-nationalist movement by the "Righteous Harmony Society" , or "Righteous Fists of Harmony" or "Society of Righteous and Harmonious Fists" , in China between...

, Atago was assigned to patrol off the Taku Forts

Taku Forts

The Dagu Forts , also called the Peiho Forts are forts located by the Hai River estuary, in Tanggu District, Tianjin municipality, in northeastern China. They are located 60 km southeast of the Tianjin urban center.-History:The first fort was built during the reign of the Ming Jiajing...

.

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...

, Atago assisted in 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....

. While on patrol outside 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....

 on November 6, 1904 she ran aground on some rocks at position 38°24′N 120°55′E, and sank.

She was removed the navy list

Navy List

A 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 country....

on June 15, 1905.