The two were protected cruiser

Protected cruiser

The protected cruiser is a type of naval cruiser of the late 19th century, so known because its armoured deck offered protection for vital machine spaces from shrapnel caused by exploding shells above...

s operated by 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...

. They participated in numerous actions 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 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...

.

Background

The Niitaka class was the second cruiser class built to a completely Japanese design and was ordered as part of the 2nd Emergency Fleet Replenishment Program, with a budget driven by 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...

. These small cruisers were intended for high speed reconnaissance. 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:...

 Niitaka was built 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...

, Yokosuka, Kanagawa

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...

, which already had considerable experiencing in building small cruisers. Its 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...

, the Tsushima, was built at the new 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...

, at Kure, Hiroshima

Kure, Hiroshima

is a city in Hiroshima prefecture, Japan.As of October 1, 2010, the city has an estimated population of 240,820 and a population density of 681 persons per km². The total area is 353.74 km².- History :...

 and took considerably longer to complete.

Design

In terms of design, the Niitaka class was very conservative in layout and similar to, but somewhat larger and the earlier Japanese-designed . The increased displacement, heavier armor and lower center of gravity

Center of gravity

In physics, a center of gravity of a material body is a point that may be used for a summary description of gravitational interactions. In a uniform gravitational field, the center of mass serves as the center of gravity...

 resulted in a more seaworthy and powerful vessel than the Suma, and enabled the Tsushima to outclass many other contemporary protected cruisers.

In terms of armament, it is noteworthy that the Niitaka class cruisers were not equipped with 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. Observing problems experienced by the United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 during the Spanish American War with torpedo reliability and the dangers of sympathetic detonation

Sympathetic detonation

A sympathetic detonation , also called flash over, is a detonation, usually unintended, of an explosive charge by a nearby explosion. Sympathetic detonation is caused by a shock wave, or impact of primary or secondary blast fragments.The initiating explosive is called donor explosive, the initiated...

, it was decided not to use this weapon on the new cruisers. The main guns were standardized to the 152 mm standard.

The Niitaka-class cruisers were fitted with 16 Niclausse boilers, a great improvement on the locomotive boilers of the Suma.

Ships in class

Two Niitaka class cruisers were built. Both were lost before the start of World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

.
Ordered in 1897, launched 15 November 1902, and completed 27 January 1904, the Niitaka played a major role in 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...

. During 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 Niitaka participated at the Battle of Tsingtao

Battle of Tsingtao

The Siege of Tsingtao was the attack on the German-controlled port of Tsingtao in China during World War I by Imperial Japan and the United Kingdom....

 and was subsequently assigned to patrol of shipping lanes in Southeast Asia

Southeast Asia

Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

, 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...

 from its base at Cape Town

Cape Town

Cape Town is the second-most populous city in South Africa, and the provincial capital and primate city of the Western Cape. As the seat of the National Parliament, it is also the legislative capital of the country. It forms part of the City of Cape Town metropolitan municipality...

. After the war, it served during Japan's 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...

. It was lost after running aground in a typhoon on 26 August 1923 on the coast of Sakhalin

Sakhalin

Sakhalin or Saghalien, is a large island in the North Pacific, lying between 45°50' and 54°24' N.It is part of Russia, and is Russia's largest island, and is administered as part of Sakhalin Oblast...

.

Ordered in 1897, launched 15 December 1902, and completed 14 February 1904, the Tsushima participated in the closing stages of 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...

. 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...

, the Tsushima played an active role in the Battle of Tsingtao

Battle of Tsingtao

The Siege of Tsingtao was the attack on the German-controlled port of Tsingtao in China during World War I by Imperial Japan and the United Kingdom....

 and pursuit of the German East Asia Squadron

German East Asia Squadron

The German East Asia Squadron was a German Navy cruiser squadron which operated mainly in the Pacific Ocean between the 1870s and 1914...

. It was subsequently assigned to Cape Town

Cape Town

Cape Town is the second-most populous city in South Africa, and the provincial capital and primate city of the Western Cape. As the seat of the National Parliament, it is also the legislative capital of the country. It forms part of the City of Cape Town metropolitan municipality...

, where it assisted its sister ship Niitaka in patrol of shipping lanes 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...

. It subsequently was used in 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...

. The Tsushima was struck from the Navy list in 1936 and expended as a torpedo target in 1944.