Background

• In 1938, Soviet Union
  Soviet Union
  The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
  
   strengthened its Pacific Ocean Fleet. They increased the number of submarines they had. It was one of the threats that Japan
  Empire of Japan
  The Empire of Japan is the name of the state of Japan that existed from the Meiji Restoration on 3 January 1868 to the enactment of the post-World War II Constitution of...
  
   faced. The No.13 class was planned to deal with it.

No.13 class

• Project number K8. 15 vessels were built in 1939-42 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 # 180 - 183) and the Maru Rin Programme
  Temporal Naval Armaments Supplement Programme (Japan, 1940)
  The is one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In October 1940, the IJN schemed building of the submarines and auxiliary vessels because there was a shortage of them.-Table of vessels:-References:...
  
   (Ship # 184 - 194). And after the Maru Rin Programme vessels were equipped with a kitchen and food storage between bridge and the chimney for a long cruise.

  Ship #	Ship	Builder	Completed	Fate
  180	the same shall apply hereinafter	Tsurumi Iron Works	15-07-1940	Sunk by USS Pickerel USS Pickerel (SS-177) USS Pickerel , a Porpoise-class submarine, was the first ship of the United States Navy to be named for the pickerel, a young or small pike....  at southeast of Noda Noda, Iwate is a village located in Kunohe District, Iwate, Japan.As of 2003, the village has an estimated population of 4,967 and a population density of 61.45 persons per km². The total area is 80.83 km².-External links:*... , 03-04-1943.
  181	No.14	Tama Shipyards	31-03-1941	Sunk by aircraft at Owase Owase, Mie is a city located in the south of Mie, Japan. As of 2008, the city has an estimated population of 21,002 and the density of 109 persons per km². The total area is 193.16 km².... , 28-07-1945.
  182	No.15	Ōsaka Iron Works	31-03-1941	Decommissioned on 30-11-1945. Scrapped 1948.
  183	No.16	Nihon Kōkan	05-04-1941	Sunk by aircraft 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... , 04-07-1944.
  184	No.17	Tōkyō Ishikawajima Shipyard	31-07-1941	Sunk by USS Springer USS Springer (SS-414) USS Springer was a Balao-class submarine of the United States Navy, named after the springer, a Grampus.Springer was laid down on 3 October 1943 at Vallejo, Calif., by the Mare Island Navy Yard; launched on 3 August 1944, sponsored by Mrs. M. S...  at Gotō Islands Goto Islands The are Japanese islands in the East China Sea, off the western coast of Kyūshū. The islands are a part of Nagasaki Prefecture.- Geography :There are 140 islands in total, including five main islands:,,,, and.... , 28-04-1945.
  185	No.18	Nihon Kōkan	31-07-1941	Sunk by aircraft at west of Manila Manila Manila is the capital of the Philippines. It is one of the sixteen cities forming Metro Manila.Manila is located on the eastern shores of Manila Bay and is bordered by Navotas and Caloocan to the north, Quezon City to the northeast, San Juan and Mandaluyong to the east, Makati on the southeast,... , 30-12-1944.
  186	No.19	Harima Zōsen	20-09-1941	Sink at Sasebo Sasebo, Nagasaki is a city located in Nagasaki Prefecture, Japan. As of 2011, the city has an estimated population of 259,800 and the density of 609 persons per km². The total area is 426.47 km². The locality is famed for its scenic beauty. The city includes a part of Saikai National Park...  after the end of war.
  187	No.20	Tama Shipyards	20-08-1941	Scrapped 1948.
  188	No.21	Ōsaka Iron Works	20-08-1941	Decommissioned on 05-10-1945. Surrendered to United Kingdom United Kingdom The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...  on 07-10-1947, later scrapped.
  189	No.22	Mitsubishi Heavy Industries	12-10-1941	Sunk by aircraft at Steven Channel New Ireland (island) New Ireland is a large island in Papua New Guinea, approximately 7,404 km² in area. It is the largest island of the New Ireland Province, lying northeast of the island of New Britain. Both islands are part of the Bismarck Archipelago, named after Otto von Bismarck, and they are separated by...  on 19-02-1944.
  190	No.23	Harima Zōsen	15-11-1941	Decommissioned on 25-10-1945. Scrapped 1948.
  191	No.24	Ōsaka Iron Works	20-12-1941	Sunk by USS Burns USS Burns (DD-588) USS Hugh Burns , a , was the second ship of the United States Navy to be named for Captain Hugh Otway Burns , a privateer in the War of 1812....  at west of Truk, 17-02-1944.
  192	No.25	Mitsubishi Heavy Industries	29-12-1941	Sunk by USS Grunion USS Grunion (SS-216) was a Gato-class submarine that was sunk at Kiska, Alaska, during World War II. She was the only ship of the United States Navy to be named for the grunion, a small fish of the silversides family, indigenous to the western American coast....  at Kiska Kiska Kiska is an island in the Rat Islands group of the Aleutian Islands of Alaska located at . It is about long and varies in width from - Discovery :... , 15-07-1942.
  193	No.26	Nihon Kōkan	20-12-1941	Sunk by aircraft off Jinhae, 30-07-1945.
  194	No.27	Tōkyō Ishikawajima Shipyard	18-01-1942	Sunk by USS Grunion USS Grunion (SS-216) was a Gato-class submarine that was sunk at Kiska, Alaska, during World War II. She was the only ship of the United States Navy to be named for the grunion, a small fish of the silversides family, indigenous to the western American coast....  at Kiska, 15-07-1942.

No.28 class

• Project number K8B. 31 vessels were built in 1941-44 under the Maru Rin Programme (Ship # 221 - 232) and the Maru Kyū Programme (Ship # 440 - 458). They abolished a slant of stern for mass production.

  Ship #	Ship	Builder	Completed	Fate
  221	No.28	Nihon Kōkan	15-05-1942	Sunk by aircraft at Balintang Channel Balintang Channel The Balintang Channel is the small waterway that separates the Batanes and Babuyan Islands, both of which belong to the Philippines, in the Luzon Strait.... , 01-02-1945.
  222	No.29	Harima Zōsen	30-04-1942	Sunk by aircraft off Truk, 18-02-1944.
  223	No.30	Mitsui Engineering & Shipbuilding	13-05-1942	Sunk by USS Barbero USS Barbero (SS-317) USS Barbero was a Balao-class submarine of the United States Navy, named for a family of fishes commonly called surgeon fish....  off Kuching Kuching Kuching , officially the City of Kuching, and formerly the City of Sarawak, is the capital and most populous city of the East Malaysian state of Sarawak. It is the largest city on the island of Borneo, and the fourth largest city in Malaysia.... , 24-12-1944.
  224	No.31	Tōkyō Ishikawajima Shipyard	15-06-1942	Sunk by aircraft at southeast of French Indochina French Indochina French Indochina was part of the French colonial empire in southeast Asia. A federation of the three Vietnamese regions, Tonkin , Annam , and Cochinchina , as well as Cambodia, was formed in 1887.... , 12-01-1945.
  225	No.32	Nihon Kōkan	19-08-1942	Sunk by aircraft at Coron Bay Coron Island Coron Island is the third largest island in the Calamian Group of Islands in northern Palawan in the Philippines. The island is part of the larger municipality of the same name. It is about southwest of Manila, is known for several Japanese shipwrecks World War II vintage. The island is part of... , 24-09-1944.
  226	No.33	Mitsui Engineering & Shipbuilding	15-08-1942	Sunk by aircraft at Cam Ranh Bay Cam Ranh Bay Cam Ranh Bay is a deep-water bay in Vietnam in the province of Khánh Hòa. It is located at an inlet of the South China Sea situated on the southeastern coast of Vietnam, between Phan Rang and Nha Trang, approximately 290 kilometers / 180 miles northeast of Hồ Chí Minh City / Saigon.Cam Ranh is... , 21-03-1945.
  227	No.34	Harima Zōsen	31-08-1942	Sunk by HMS Saumarez HMS Saumarez (G12) HMS Saumarez was an S class destroyer of the Royal Navy, completed on 1 July 1943. As a flotilla leader, her standard displacement was 20 tons heavier than other ships of her class... , HMS Vigilant HMS Vigilant (R93) HMS Vigilant was an V-class destroyer of the British Royal Navy that saw service during World War II. She was later converted into a Type 15 fast anti-submarine frigate, with the new pennant number F93....  and HMS Rapid HMS Rapid (H32) HMS Rapid was an R-class destroyer of the Royal Navy that saw service during the Second World War. She was part of Force 68, serving in the Indian Ocean, and later the Pacific. In one operation she was damaged by fire from a shore battery, with 11 killed and 23 wounded. She was towed to Akyab for...  at east of Little Andaman Little Andaman Little Andaman island is the fourth largest of the Andaman Islands of India with an area of 734.39 km², lying at the southern end of the archipelago. It is separated from Rutland Island in Great Andaman by the Duncan Passage. It is home to the Onge tribe, who call the island Egu Belong, and... , 26-03-1945.
  228	No.35	Hakodate Dock	28-02-1943	Sunk by aircraft at Mekong Mekong The Mekong is a river that runs through China, Burma, Laos, Thailand, Cambodia and Vietnam. It is the world's 10th-longest river and the 7th-longest in Asia. Its estimated length is , and it drains an area of , discharging of water annually.... , 23-02-1945.
  229	No.36	Tōkyō Ishikawajima Shipyard	15-10-1942	Sunk by aircraft at Subic Bay Subic Bay Subic Bay is a bay forming part of Luzon Sea on the west coast of the island of Luzon in Zambales, Philippines, about 100 kilometers northwest of Manila Bay. Its shores were formerly the site of a major United States Navy facility named U.S... , 19-11-1944.
  230	No.37	Mitsui Engineering & Shipbuilding	31-10-1942	Sunk by aircraft at Amami Ōshima Amami Oshima is a semi-tropical island in the Amami Islands, which is part of the larger Nansei Islands in Japan. Ōshima literally means big island, and it is the largest of the Amami Islands. It lies roughly halfway between the islands of Okinawa and Kyūshū. Briefly part of the Ryūkyū Kingdom, in 1624 it was... , 22-05-1945.
  231	No.38	Nihon Kōkan	10-12-1942	Decommissioned on 25-10-1945. Surrendered to Soviet Union Soviet Union The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....  on 03-10-1947.
  232	No.39	Harima Zōsen	31-10-1942	Sunk by aircraft at Kavieng Kavieng Kavieng is the capital of the Papua New Guinean province of New Ireland and the largest town on the island of the same name. The town is located at Balgai Bay, on the northern tip of the island. As of 2000, it had a population of 10,600.... , 16-02-1944.
  440	No.40	Hitachi Zōsen	31-03-1942	Sunk by aircraft off Kavieng, 19-02-1944.
  441	No.41	Kawanami Kōgyō	31-01-1943	Scuttled by Royal Navy Royal Navy The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service... , 11-07-1946. Decommissioned on 10-08-1946.
  442	No.42	Hitachi Zōsen	31-01-1943	Sunk by aircraft at Onagawa 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... , 09-08-1945.
  443	No.43	Niigata Iron Works	07-04-1943	Sunk by aircraft at Cam Ranh Bay, 12-01-1945.
  444	No.44	Kawanami Kōgyō	15-05-1943	Decommissioned on 15-09-1945. Scrapped 1948.
  445	No.45	Hakodate Dock	15-10-1943	Sunk by aircraft at Cebu, 29-11-1944.
  446	No.46	Hitachi Zōsen	30-09-1943	Sunk by aircraft at Masbate Masbate Masbate is an island province of the Philippines located in the Bicol Region. Its capital is Masbate City and consists of three major islands: Masbate, Ticao and Burias.-History:... , 25-11-1944.
  447	No.47	Kawanami Kōgyō	12-08-1943	Decommissioned on 15-09-1945. Surrendered to United States United States The United States of America is a federal constitutional republic comprising fifty states and a federal district...  on 01-10-1947 at Qingdao Qingdao ' also known in the West by its postal map spelling Tsingtao, is a major city with a population of over 8.715 million in eastern Shandong province, Eastern China. Its built up area, made of 7 urban districts plus Jimo city, is home to about 4,346,000 inhabitants in 2010.It borders Yantai to the... . Sunk as target at 35°45′N 123°17′E, 07-10-1947.
  448	No.48	Niigata Iron Works	31-07-1943	Sunk by aircraft at Kamaishi Kamaishi, Iwate is a small, historic city located on the Sanriku rias coast of Iwate, Japan. As of 2008, the city has an estimated population of 41,022 and a density of 92.9 persons per km². The total area is 441.42 km². It is famous in modern times for its steel production and most recently for its promotion... , 14-07-1945.
  449	No.49	Hakodate Dock	31-01-1944	Decommissioned on 05-10-1945. Surrendered to Republic of China Republic of China The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...  on 03-10-1947, and renamed Haihong. Renamed Yalong (PC-106) in January 1951. Renamed Qujiang in 1954. Decommissioned on 01-10-1956.
  450	No.50	Hitachi Zōsen	30-11-1943	Sunk by aircraft at Chichi-jima, 20-07-1944.
  451	No.51	Kawanami Kōgyō	08-11-1943	Decommissioned on 15-09-1945. Scrapped on 01-08-1948.
  452	No.52	Naniwa Dock	30-11-1943	Scrapped 1948.
  453	No.53	Naniwa Dock	20-03-1944	Sunk by USS Waller USS Waller (DD-466) USS Waller , a Fletcher-class destroyer, was a ship of the United States Navy named for Major General Littleton Waller, USMC ....  and USS Pringle USS Pringle (DD-477) USS Pringle , a , was a ship of the United States Navy named for Vice Admiral Joel R. P. Pringle .Pringle was laid down by the Charleston Navy Yard, on 31 July 1941; launched on 2 May 1942, sponsored by Mrs. John D. H. Kane; and commissioned on 15 September 1942, with Lieutenant Commander Harold O...  at Ormoc Bay, 28-11-1944.
  454	No.54	Niigata Iron Works	12-11-1943	Sunk by USS Pollack USS Pollack (SS-180) USS Pollack , a , was the first ship of the United States Navy to be named for the pollack, a food fish resembling the true cod, but with the lower jaw projecting and without the barbel....  at Bonin Islands, 25-03-1944.
  455	No.55	Hakodate Dock	31-05-1944	Sunk by aircraft at Cebu Strait Cebu Strait Cebu Strait, sometimes called Bohol Strait, is a strait in the Philippines that separates the island provinces of Cebu and Bohol. The Cebu Strait connects the western part of Bohol Sea with Camotes Sea, and is a major sea-lane connecting Cebu City on its northern end with port cities in the south... , 13-09-1944.
  456	No.56	Naniwa Dock	26-07-1944	Decommissioned 1947.
  457	No.57	Hakodate Dock	28-10-1944	Sunk by HMS Tartar HMS Tartar (F43) HMS Tartar was a Tribal-class destroyer of the Royal Navy that saw service in most of the naval theatres of World War II. She had an eventful career, eventually receiving the nickname 'Lucky Tartar' due to her numerous escapes from dangerous situations...  and HMS Eskimo HMS Eskimo (F75) HMS Eskimo was a Tribal-class destroyer, laid down by the High Walker Yard of Vickers Armstrong at Newcastle-on-Tyne on 5 August 1936...  at north of Sabang Sabang Sabang is a city consisting of several islands in Aceh, Indonesia. The metropolitan area is located on Weh Island, 17 km north of Banda Aceh. The city covers an area of 118 square kilometres and according to the 2000 census had a population of 23,654 people... , 12-06-1945.
  458	No.58	Niigata Iron Works	26-01-1944	Sunk by aircraft at Amami Ōshima, 22-05-1945.
  459	No.59			Cancelled in 1943.

No.60 class

• Project number K8C. 3 vessels were built in 1943-44 under the 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 # 5341, # 5342 and 5344). They were changed inner hull design from the No.28 class. Therefore, there is not a difference of appearances.

  Ship #	Ship	Builder	Completed	Fate
  5341	No.60	Niigata Iron Works	28-03-1944	Decommissioned on 05-10-1945. Scrapped 1948.
  5342	No.61	Niigata Iron Works	08-05-1944	Sunk by aircraft at south of Taiwan Taiwan Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following... , 09-01-1945.
  5343	No.62			Cancelled in 1943.
  5344	No.63	Niigata Iron Works	30-06-1944	Sunk by HMS Virago HMS Virago (R75) HMS Virago was an V-class destroyer of the British Royal Navy that saw service during World War II. She was later converted into a Type 15 fast anti-submarine frigate, with the new pennant number F76....  and HMS Volage HMS Volage (R41) HMS Volage was a V-class destroyer of the British Royal Navy, commissioned on 26 May 1944, that served in the Arctic and the Indian Oceans during World War II... at east of Little Andaman, 26-03-1945.
  5345 - 5370	No.64 to No.89			Cancelled in 1943.