No.19 class minesweeper - AbsoluteAstronomy.com

The was a class of minesweepers 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...

(IJN), serving during the 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...

. 70 vessels were plannned under the Maru 4 Programme

4th Naval Armaments Supplement Programme (Japan, 1939)

The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In 1939, the IJN started new naval armaments expansion plan...

(Ship # 164-169), Maru Kyū Programme

Rapid Naval Armaments Supplement Programme (Japan, 1941)

The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In August 1941, the IJN started building warships for war...

(Ship # 410-437) and Kai-Maru 5 Programme

Modified 5th Naval Armaments Supplement Programme (Japan, 1942)

The was one of the wartime armaments expansion plans of the Imperial Japanese Navy .-Background:In September 1942, after being defeated in the Battle of Midway, the IJN drew up a new armaments expansion plan. This plan was combined by the 5th Naval Armaments Supplement Programme and the 6th Naval...

(Ship # 5301-5336), however, only 17 vessels were completed.

Background

Project number I4B. Improved model of the No.7-class
No.7 class minesweeper (1938)
The was a class of minesweepers of the Imperial Japanese Navy , serving during the Second Sino-Japanese War and the World War II. 6 vessels were built in 1937-39 under the Maru 3 Keikaku.-Background:...

. The IJN gave them a turret of 55 degrees gun elevation, because the IJN wanted to attack the strong point of behind the hill to them. And it was not useful in the Pacific War very much.
And after the Maru Kyū Programme
Rapid Naval Armaments Supplement Programme (Japan, 1941)
The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In August 1941, the IJN started building warships for war...

vessels abolished double-curvature bow for a mass production and changed bow shape.

Ships in class

Ship #	Ship	Builder	Laid down	Launched	Completed	Fate
164	No.19	Tōkyō Ishikawajima Shipyard	17 September 1940	18 February 1941	31 May 1941	Sunk by air raid at the mouth of the Cagayan River Cagayan River The Cagayan River is the longest and largest river in the Philippine Archipelago. It is located in the Cagayan Valley region in northeastern part of Luzon island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan.-Topography:... on 10 December 1941. Decommissioned on 30 November 1945.
165	No.20	Tōkyō Ishikawajima Shipyard	19 March 1941	17 September 1941	15 December 1941	Sunk by USS Trepang USS Trepang (SS-412) The first USS Trepang was a Balao-class submarine in the United States Navy. She was named for the trepang, a marine animal sometimes called a 'sea slug' or a 'sea cucumber', having a long, tough, muscular body and found in the coral reefs of the East Indies.When the contract to build her was... at Yellow Sea Yellow Sea The Yellow Sea is the name given to the northern part of the East China Sea, which is a marginal sea of the Pacific Ocean. It is located between mainland China and the Korean Peninsula. Its name comes from the sand particles from Gobi Desert sand storms that turn the surface of the water golden... 34°16′N 123°37′E on 5 May 1945. Decommissioned on 25 May 1945.
166	No.21	Harima Shipyard	20 September 1941	28 February 1942	29 June 1942	Decommissioned on 25 October 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°19′N 123°31′E on 7 October 1947.
167	No.22	Tōkyō Ishikawajima Shipyard	6 October 1941	28 April 1942	31 July 1942	Sunk by air raid at Palau Palau Palau , officially the Republic of Palau , is an island nation in the Pacific Ocean, east of the Philippines and south of Tokyo. In 1978, after three decades as being part of the United Nations trusteeship, Palau chose independence instead of becoming part of the Federated States of Micronesia, a... on 11 November 1944. Decommissioned on 10 January 1945.
168	No.23	Tōkyō Ishikawajima Shipyard	5 May 1942	13 January 1943	31 March 1943	Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
169	No.24	Harima Shipyard	5 May 1942	16 September 1942	25 January 1943	Sunk by air raid at 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... on 15 July 1945. Decommissioned on 10 August 1945.
410	No.25	Kure Naval Arsenal			30 April 1943	Sunk by air raid at Chichi-jima Chichi-jima , formerly known as Peel Island and in the 19th century known to the English as part of the Bonin Islands, is the largest island in the Ogasawara archipelago. Chichi-jima is approximately 150 miles north of Iwo Jima. The island is within the political boundaries of Ogasawara Town, Ogasawara... on 4 July 1944. Decommissioned on 10 September 1944.
411	No.26	Mitsubishi, Yokohama Shipyard			31 March 1943	Sunk by air raid at Rabaul Rabaul Rabaul is a township in East New Britain province, Papua New Guinea. The town was the provincial capital and most important settlement in the province until it was destroyed in 1994 by falling ash of a volcanic eruption. During the eruption, ash was sent thousands of metres into the air and the... on 17 February 1944. Decommissioned on 30 April 1944.
412	No.27	Harima Shipyard			31 July 1943	Sunk by USS Runner USS Runner (SS-476) USS Runner , a Tench-class submarine, was the second ship of the United States Navy to be named for the runner, an amberfish inhabiting subtropical waters. Her keel was laid down on 10 July 1944 by the Portsmouth Naval Shipyard of Kittery, Maine. She was launched on 17 October 1944 sponsored by... off Yamada Yamada, Iwate is a town located in Shimohei District, Iwate, Japan.As of 2003, the town has an estimated population of 20,413 and a population density of 77.49 persons per km². The total area is 263.44 km².... 39°20′N 142°07′E on 10 July 1945. Decommissioned on 15 September 1945.
413	No.28	Kure Naval Arsenal			28 June 1943	Sunk by USS Jack USS Jack (SS-259) , a Gato-class submarine, was the first ship of the United States Navy to be named for the jack .... at Celebes Sea Celebes Sea The Celebes Sea of the western Pacific Ocean is bordered on the north by the Sulu Archipelago and Sulu Sea and Mindanao Island of the Philippines, on the east by the Sangihe Islands chain, on the south by Sulawesi, and on the west by Kalimantan in Indonesia... 01°25′N 123°29′E on 29 August 1944. Decommissioned on 10 October 1944.
414	No.29	Tōkyō Ishikawajima Shipyard			22 October 1943	Struck a naval mine and sunk off Shimonoseki Shimonoseki, Yamaguchi is a city located in Yamaguchi Prefecture, Japan. It is at the southwestern tip of Honshū, facing the Tsushima Strait and also Kitakyushu across the Kanmon Straits.... on 7 May 1945. Decommissioned on 10 August 1945.
415	No.30	Tōkyō Ishikawajima Shipyard			5 February 1944	Sunk by air raid at Ormoc Bay Ormoc Bay Ormoc Bay is a bay on the island of Leyte in the Philippines. The bay is an inlet of the Camotes Sea. The city of Ormoc lies at the head of the bay and exports rice, copra and sugar. The World War II Battle of Ormoc Bay took place from November 11 until mid-December in Ormoc Bay during late 1944.... on 11 November 1944. Decommissioned on 10 January 1945.
416-417						Cancelled in 1945.
418	No.33	Mitsubishi, Yokohama Shipyard			31 July 1943	Sunk by air raid at Onagawa Bay Onagawa, Miyagi is a town located in Oshika District, Miyagi, Japan. The town was formed in 1926. The town takes pride in the fact that it still has beaches with "squeaking sand", which has apparently become rare in Japan due to human induced environmental changes. Onagawa is a port town, and right at the... on 9 August 1945. Decommissioned on 15 September 1945.
419	No.34	Tōkyō Ishikawajima Shipyard			29 May 1944	Sunk by USS Chub USS Chub (SS-329) USS Chub , a Balao-class submarine, was a ship of the United States Navy named for the chub, a game fish of the Atlantic and Mediterranean. The name is also given locally to a wide variety of American fishes... at Java Sea Java Sea The Java Sea is a large shallow sea on the Sunda Shelf. It was formed as sea levels rose at the end of the last ice age. The Java Sea lies between the Indonesian islands of Borneo to the north, Java to the south; Sumatra to the west, and Sulawesi to the east... 06°18′S 116°14′E on 21 May 1945. Decommissioned on 10 June 1945.
420-422						Cancelled in 1945.
423	No.38	Fujinagata Shipyards			10 June 1944	Sunk by USS Atule USS Atule (SS-403) USS Atule , a Balao-class submarine, was the only ship of the United States Navy to be named for the atule.Her keel was laid down on 25 November 1943 by the Portsmouth Naval Shipyard in Kittery, Maine. Atule was launched on 6 March 1944 sponsored by Miss Elizabeth Louise Kauffman, the daughter of... at Bashi Channel Bashi Channel The Bashi Channel is a strait between the Y'Ami Island of the Philippines and Orchid Island of Taiwan. It is characterized by windy storms during the rainy period, June to December. It is a part of the Pacific Ocean.... 21°21′N 119°45′E on 19 November 1944. Decommissioned on 10 March 1945.
424	No.39	Harima Shipyard			27 May 1944	Sunk by USS Threadfin USS Threadfin (SS-410) USS Threadfin , a Balao-class submarine, was the only ship of the United States Navy to be named for the threadfin, any of a family of fishes related to the mullets and distinguished by filamentous rays on the lower part of the pectoral fin.... at Yellow Sea 35°01′N 125°42′E on 20 July 1945. Decommissioned on 15 September 1945.
425						Cancelled in 1945.
426	No.41	Fujinagata Shipyards			17 July 1944	Sunk by air raid at Hainan Hainan Hainan is the smallest province of the People's Republic of China . Although the province comprises some two hundred islands scattered among three archipelagos off the southern coast, of its land mass is Hainan Island , from which the province takes its name... on 4 January 1945. Decommissioned on 15 September 1945.
427-437						Cancelled in 1945.
5301-5336						Cancelled in 1944.

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