List of ships of the Imperial Japanese Navy

The following is the list of ships of the Imperial Japanese Navy for the duration of its existence, 1868–1945. This list also includes ships before the official founding of the Navy and some auxiliary ships used by the Army. For a list of ships of its successor, the Japan Maritime Self-Defense Force, see List of active Japan Maritime Self-Defense Force ships and List of combatant ship classes of the Japan Maritime Self-Defense Force.

Early warships

 * Atakebune, 16th century coastal oar propelled warships.
 * Red seal ships – Around 350 armed sailships, commissioned by the Bakufu in the early 17th century, for Asian and South-East Asian trade.
 * JAPANESE WARSHIP San Buena Ventura (1607) – Built by William Adams for Tokugawa Ieyasu. Crossed the Pacific in 1610.
 * JAPANESE WARSHIP San Juan Bautista (1614) – One of Japan's first Western-style sail warships, transported the embassy of Hasekura Tsunenaga to America in 1614.

Western-style sail warships

 * JAPANESE BATTLESHIP Shohei Maru (1854) – Japan's first post-seclusion Western-style sail warship.
 * JAPANESE WARSHIP Hou-Ou Maru (1854)
 * JAPANESE WARSHIP Asahi Maru (1856)

Steam warships

 * Kankō Maru (1855), Japan's first steam warship.
 * JAPANESE WARSHIP Kanrin Maru (1855) – Japan's first screw-driven steam warship
 * JAPANESE WARSHIP Chōyō (1858)
 * JAPANESE BATTLESHIP Kaiyō Maru (1866)
 * JAPANESE WARSHIP Kaiten
 * JAPANESE WARSHIP Banryū
 * JAPANESE WARSHIP Chogei
 * JAPANESE WARSHIP Shinsoku
 * JAPANESE WARSHIP Mikaho
 * JAPANESE WARSHIP Yoshun(ja:陽春丸)
 * JAPANESE WARSHIP Kasuga
 * JAPANESE GUNBOAT Chiyodagata (1863), Japan's first domestically built steam warship.
 * JAPANESE WARSHIP Hiryū(ja:飛龍丸)
 * JAPANESE WARSHIP Teibo
 * JAPANESE BATTLESHIP Ryūjō (1864) Japanese-Gunboat-Unyo-1875.png
 * JAPANESE GUNBOAT Unyo
 * JAPANESE WARSHIP Nisshin
 * JAPANESE WARSHIP Takao(ja:第二回天)
 * JAPANESE WARSHIP Moshun

Corvettes and gunboats

 * Kongō-class ironclad
 * JAPANESE CORVETTE Kongō (1877)
 * JAPANESE CORVETTE Hiei (1877)
 * JAPANESE CORVETTE Amagi
 * JAPANESE GUNBOAT Tsukushi
 * JAPANESE CORVETTE Kaimon
 * JAPANESE CORVETTE Tenryū
 * Katsuragi-class corvette
 * JAPANESE CORVETTE Katsuragi
 * JAPANESE CORVETTE Yamato
 * JAPANESE CORVETTE Musashi
 * JAPANESE GUNBOAT Heien (1882, ex-Chinese, captured 1895)
 * Maya-class gunboat
 * JAPANESE GUNBOAT Maya
 * JAPANESE GUNBOAT Akagi
 * JAPANESE GUNBOAT Atago
 * JAPANESE GUNBOAT Chōkai
 * JAPANESE GUNBOAT Ōshima
 * JAPANESE GUNBOAT Banjo
 * JAPANESE GUNBOAT Uji

Old battleships
‡ Before conversion to hybrid aircraft carriers

Seaplane tenders

 * JAPANESE SEAPLANE CARRIER Wakamiya (1913)
 * Notoro (1920)
 * Akitsushima
 * Kamoi
 * Chitose-class aircraft carrier (converted to aircraft carriers)
 * JAPANESE SEAPLANE CARRIER Mizuho
 * JAPANESE SEAPLANE CARRIER Nisshin
 * Kamikawa Maru-class seaplane tender

Aircraft carriers



 * JAPANESE AIRCRAFT CARRIER Hōshō (1921)
 * JAPANESE AIRCRAFT CARRIER Akagi (1925)
 * JAPANESE AIRCRAFT CARRIER Kaga (1928)
 * JAPANESE AIRCRAFT CARRIER Ryūjō (1931)
 * JAPANESE AIRCRAFT CARRIER Sōryū (1935)
 * JAPANESE AIRCRAFT CARRIER Hiryū (1937)
 * Shōkaku-class aircraft carrier
 * JAPANESE AIRCRAFT CARRIER Shōkaku (1939)
 * JAPANESE AIRCRAFT CARRIER Zuikaku (1939)
 * Zuihō-class aircraft carrier
 * JAPANESE AIRCRAFT CARRIER Zuihō (1940)
 * JAPANESE AIRCRAFT CARRIER Shōhō (1941)
 * Hiyō-class aircraft carrier
 * JAPANESE AIRCRAFT CARRIER Jun'yō (1941)
 * JAPANESE AIRCRAFT CARRIER Hiyō (1941)
 * Taiyō-class escort carrier escort carrier
 * JAPANESE AIRCRAFT CARRIER Unyō (liner converted to escort carrier in 1941)
 * JAPANESE AIRCRAFT CARRIER Chūyō (liner converted to escort carrier in 1942)
 * JAPANESE AIRCRAFT CARRIER Taiyō (liner converted to escort carrier in 1942)
 * JAPANESE AIRCRAFT CARRIER Kaiyō (liner converted to escort carrier in 1942) (liner converted to escort carrier in 1943)
 * JAPANESE AIRCRAFT CARRIER Ryūhō (converted from submarine tender in 1942)
 * JAPANESE AIRCRAFT CARRIER Taihō (1943)
 * Chitose-class aircraft carrier light aircraft carriers
 * JAPANESE AIRCRAFT CARRIER Chiyoda (1943)
 * JAPANESE AIRCRAFT CARRIER Chitose (1944)
 * Unryū-class aircraft carrier
 * JAPANESE AIRCRAFT CARRIER Amagi (1943)
 * JAPANESE AIRCRAFT CARRIER Unryū (1943)
 * JAPANESE AIRCRAFT CARRIER Katsuragi (1944)
 * JAPANESE AIRCRAFT CARRIER Kasagi (not completed)
 * Aso (not completed)
 * Ikoma (not completed)
 * Shin'yō (1943)
 * JAPANESE AIRCRAFT CARRIER Shinano (1944)
 * Shimane Maru-class escort carrier escort carrier
 * JAPANESE AIRCRAFT CARRIER Shimane Maru (1944)
 * Otakisan Maru (not completed)

Imperial Japanese Army

 * Yamashio Maru-class aircraft carrier auxiliary escort carrier (used by the Army)
 * JAPANESE AIRCRAFT CARRIER Yamashio Maru (1944)
 * Chigusa Maru (not completed)
 * JAPANESE AIRCRAFT CARRIER Akitsu Maru (1941, landing craft carrier and escort carrier)
 * JAPANESE AIRCRAFT CARRIER Kumano Maru (1945, landing craft carrier and escort carrier)

2nd Class destroyers

 * Sakura-class destroyer (1911–1912)
 * JAPANESE DESTROYER Sakura
 * JAPANESE DESTROYER Tachibana
 * Kaba-class destroyer (1915)
 * JAPANESE DESTROYER Kaba
 * JAPANESE DESTROYER Kashiwa
 * JAPANESE DESTROYER Sakaki
 * JAPANESE DESTROYER Katsura
 * JAPANESE DESTROYER Sugi
 * JAPANESE DESTROYER Kaede
 * JAPANESE DESTROYER Ume
 * JAPANESE DESTROYER Kiri
 * JAPANESE DESTROYER Kusunoki
 * JAPANESE DESTROYER Matsu
 * Momo-class destroyer (1916–1917)
 * JAPANESE DESTROYER Momo
 * JAPANESE DESTROYER Kashi
 * JAPANESE DESTROYER Hinoki
 * JAPANESE DESTROYER Yanagi
 * Enoki-class destroyer (1917–1918)
 * JAPANESE DESTROYER Enoki
 * JAPANESE DESTROYER Maki
 * JAPANESE DESTROYER Nara
 * JAPANESE DESTROYER Keyaki
 * JAPANESE DESTROYER Kuwa
 * JAPANESE DESTROYER Tsubaki
 * Momi-class destroyer (1919–1922)
 * JAPANESE DESTROYER Momi
 * JAPANESE DESTROYER Kaya
 * JAPANESE DESTROYER Nire
 * JAPANESE DESTROYER Kuri
 * JAPANESE DESTROYER Nashi
 * JAPANESE DESTROYER Take
 * JAPANESE DESTROYER Kaki
 * JAPANESE DESTROYER Tsuga
 * JAPANESE DESTROYER Kiku
 * JAPANESE DESTROYER Aoi
 * JAPANESE DESTROYER Hagi
 * JAPANESE DESTROYER Susuki
 * JAPANESE DESTROYER Fuji
 * JAPANESE DESTROYER Tsuta
 * JAPANESE DESTROYER Ashi
 * JAPANESE DESTROYER Hishi
 * JAPANESE DESTROYER Hasu
 * JAPANESE DESTROYER Sumire
 * JAPANESE DESTROYER Yomogi
 * JAPANESE DESTROYER Warabi
 * JAPANESE DESTROYER Tade
 * Wakatake-class destroyer (1922–1923)
 * JAPANESE DESTROYER Wakatake
 * JAPANESE DESTROYER Kuretake
 * JAPANESE DESTROYER Sanae
 * JAPANESE DESTROYER Sawarabi
 * JAPANESE DESTROYER Asagao
 * JAPANESE DESTROYER Yūgao
 * JAPANESE DESTROYER Fuyo
 * JAPANESE DESTROYER Karukaya

3rd Class destroyers

 * Murakumo-class destroyer (1898–1922)
 * JAPANESE DESTROYER Murakumo
 * JAPANESE DESTROYER Shinonome
 * JAPANESE DESTROYER Yūgiri
 * JAPANESE DESTROYER Shiranui
 * JAPANESE DESTROYER Kagero
 * JAPANESE DESTROYER Usugumo
 * Ikazuchi-class destroyer (1898–1926)
 * JAPANESE DESTROYER Ikazuchi
 * JAPANESE DESTROYER Inazuma
 * JAPANESE DESTROYER Akebono
 * JAPANESE DESTROYER Sazanami
 * JAPANESE DESTROYER Niji
 * JAPANESE DESTROYER Oboro
 * Akatsuki-class destroyer (1901–1920)
 * JAPANESE DESTROYER Akatsuki
 * JAPANESE DESTROYER Kasumi
 * Shirakumo-class destroyer (1901–1926)
 * JAPANESE DESTROYER Shirakumo
 * JAPANESE DESTROYER Asashio
 * Harusame-class destroyer (1902–1926)
 * JAPANESE DESTROYER Harusame
 * JAPANESE DESTROYER Murasame
 * JAPANESE DESTROYER Hayatori
 * JAPANESE DESTROYER Asagiri
 * JAPANESE DESTROYER Ariake
 * JAPANESE DESTROYER Fubuki
 * JAPANESE DESTROYER Arare
 * Kamikaze-class destroyer (1905–1930)
 * JAPANESE DESTROYER Kamikaze
 * JAPANESE DESTROYER Hatsushimo
 * JAPANESE DESTROYER Yayoi
 * JAPANESE DESTROYER Kisaragi
 * JAPANESE DESTROYER Asakaze
 * JAPANESE DESTROYER Shiratsuyu
 * JAPANESE DESTROYER Shirayuki
 * JAPANESE DESTROYER Matsukaze
 * JAPANESE DESTROYER Harukaze
 * JAPANESE DESTROYER Shigure
 * JAPANESE DESTROYER Asatsuyu
 * JAPANESE DESTROYER Hayate
 * JAPANESE DESTROYER Oite
 * JAPANESE DESTROYER Yūnagi
 * JAPANESE DESTROYER Yūgure
 * JAPANESE DESTROYER Yūdachi
 * JAPANESE DESTROYER Mikazuki
 * JAPANESE DESTROYER Nowaki
 * JAPANESE DESTROYER Ushio
 * JAPANESE DESTROYER Nenohi
 * JAPANESE DESTROYER Hibiki
 * JAPANESE DESTROYER Shirotae
 * JAPANESE DESTROYER Hatsuharu
 * JAPANESE DESTROYER Wakaba
 * JAPANESE DESTROYER Hatsuyuki
 * JAPANESE DESTROYER Uzuki
 * JAPANESE DESTROYER Minatsuki
 * JAPANESE DESTROYER Nagatsuki
 * JAPANESE DESTROYER Kikutsuki
 * JAPANESE DESTROYER Uranami
 * JAPANESE DESTROYER Isonami
 * JAPANESE DESTROYER Ayanami

Torpedo boats

 * Shirataka-class torpedo boat (1899–1923)
 * JAPANESE TORPEDO BOAT Shirataka
 * Hayabusa-class torpedo boat (1899–1923)
 * JAPANESE TORPEDO BOAT Hayabusa
 * JAPANESE TORPEDO BOAT Kasasagi
 * JAPANESE TORPEDO BOAT Manazuru
 * JAPANESE TORPEDO BOAT Chidori
 * JAPANESE TORPEDO BOAT Aotaka
 * JAPANESE TORPEDO BOAT Kari
 * JAPANESE TORPEDO BOAT Hato
 * JAPANESE TORPEDO BOAT Tsubame
 * JAPANESE TORPEDO BOAT Hibari
 * JAPANESE TORPEDO BOAT Kiji
 * JAPANESE TORPEDO BOAT Hashitaka
 * JAPANESE TORPEDO BOAT Sagi
 * JAPANESE TORPEDO BOAT Uzura
 * JAPANESE TORPEDO BOAT Kamome
 * JAPANESE TORPEDO BOAT Ōtori
 * Chidori-class torpedo boat (1933)
 * JAPANESE TORPEDO BOAT Chidori
 * JAPANESE TORPEDO BOAT Hatsukari
 * JAPANESE TORPEDO BOAT Manazuru
 * JAPANESE TORPEDO BOAT Tomozuru
 * Ōtori-class torpedo boat (1935–1937)
 * JAPANESE TORPEDO BOAT Hato
 * JAPANESE TORPEDO BOAT Hayabusa
 * JAPANESE TORPEDO BOAT Hiyodori
 * JAPANESE TORPEDO BOAT Kari
 * JAPANESE TORPEDO BOAT Kasasagi
 * JAPANESE TORPEDO BOAT Kiji
 * JAPANESE TORPEDO BOAT Ōtori
 * JAPANESE TORPEDO BOAT Sagi

River gunboats

 * JAPANESE GUNBOAT Sumida
 * JAPANESE GUNBOAT Fushimi
 * JAPANESE GUNBOAT Ataka
 * JAPANESE GUNBOAT Okitsu (ex-Italian minelayer Lepanto)
 * JAPANESE GUNBOAT Karatsu (ex-USS Luzon (PR-7))
 * JAPANESE GUNBOAT Katada
 * JAPANESE GUNBOAT Fushimi
 * JAPANESE GUNBOAT Sumida
 * JAPANESE GUNBOAT Hozu
 * JAPANESE GUNBOAT Katata
 * JAPANESE GUNBOAT Futami
 * JAPANESE GUNBOAT Atami
 * JAPANESE GUNBOAT Seta
 * JAPANESE GUNBOAT Kotaka
 * JAPANESE GUNBOAT Toba
 * JAPANESE GUNBOAT Hira
 * JAPANESE GUNBOAT Tatara (ex-USS Wake (PR-3))
 * JAPANESE GUNBOAT Suma (ex-HMS Moth (1915))
 * Kozakura-class traffic boat

Minesweepers

 * No. 1 class
 * No. 13 class
 * No. 7 class
 * No. 19 class
 * Aux. No. 1 class

Patrol vessels
List of IJN Patrol Vessels can be found here at
 * No.1-class auxiliary submarine chaser (驅潛特務艇第一號型): Over 200 built during World War II, 81 lost.
 * No.1-class patrol boat
 * Patrol Boat No. 1 (ex-JAPANESE DESTROYER Shimakaze)
 * Patrol Boat No. 2 (ex-JAPANESE DESTROYER Nadakaze)
 * No.31-class patrol boat
 * Patrol Boat No. 31 (ex-JAPANESE DESTROYER Kiku)
 * Patrol Boat No. 32 (ex-JAPANESE DESTROYER Aoi)
 * Patrol Boat No. 33 (ex-JAPANESE DESTROYER Hagi)
 * Patrol Boat No. 34 (ex-JAPANESE DESTROYER Susuki)
 * Patrol Boat No. 35 (ex-JAPANESE DESTROYER Tsuta)
 * Patrol Boat No. 36 (ex-JAPANESE DESTROYER Fuji)
 * Patrol Boat No. 37 (ex-JAPANESE DESTROYER Hishi)
 * Patrol Boat No. 38 (ex-JAPANESE DESTROYER Yomogi)
 * Patrol Boat No. 39 (ex-JAPANESE DESTROYER Tade)
 * Patrol Boat No. 46 (ex-JAPANESE DESTROYER Yūgao)
 * Patrol Boat No. 101 (ex-HMS Thracian)
 * Patrol Boat No. 102 (ex-USS Stewart)
 * Patrol Boat No. 103 (ex-USS Finch)
 * Patrol Boat No. 104 (ex-HNLMS Valk)
 * Patrol Boat No. 105 (ex-Arayat)
 * Patrol Boat No. 106 (ex-HNLMS Banckert)
 * Patrol Boat No. 107 (ex-USS Genesee)
 * Patrol Boat No. 108 (ex-HNLMS Arend)
 * Patrol Boat No. 109 (ex-HNLMS Fazant)

Minelayers

 * JAPANESE MINELAYER Itsukushima
 * JAPANESE MINELAYER Yaeyama

1st Class submarines

 * Junsen class
 * Type J1, Junsen 1 gata (巡潜I型), 4 units, JAPANESE SUBMARINE I-1, JAPANESE SUBMARINE I-2, JAPANESE SUBMARINE I-3, JAPANESE SUBMARINE I-4.
 * Type J1M, Junsen 1 gata kai (巡潜I型改), JAPANESE SUBMARINE I-5.
 * Type J2, Junsen 2 gata (巡潜II型), JAPANESE SUBMARINE I-6.
 * Type J3, Junsen 3 gata (巡潜III型), 2 units, JAPANESE SUBMARINE I-7, JAPANESE SUBMARINE I-8.
 * Kou class
 * Type A1, Kou gata(S35) (甲型 (S35)), 3 units, JAPANESE SUBMARINE I-9, JAPANESE SUBMARINE I-10, JAPANESE SUBMARINE I-11.
 * Type A2, Kou gata(S35B) (甲型 (S35B)), JAPANESE SUBMARINE I-12.


 * Type AM, Kou gata(S35G) (甲型 (S35G)), 2 units, JAPANESE SUBMARINE I-13, JAPANESE SUBMARINE I-14.
 * Otsu class
 * Type B1, Otsu gata(S37) (乙型 (S37)), 20 units, JAPANESE SUBMARINE I-15, JAPANESE SUBMARINE I-17, JAPANESE SUBMARINE I-19, JAPANESE SUBMARINE I-21, JAPANESE SUBMARINE I-23, JAPANESE SUBMARINE I-25, JAPANESE SUBMARINE I-26, JAPANESE SUBMARINE I-27, JAPANESE SUBMARINE I-28, JAPANESE SUBMARINE I-29, JAPANESE SUBMARINE I-30, JAPANESE SUBMARINE I-31, JAPANESE SUBMARINE I-32, JAPANESE SUBMARINE I-33, JAPANESE SUBMARINE I-34, JAPANESE SUBMARINE I-35, JAPANESE SUBMARINE I-36, JAPANESE SUBMARINE I-37, JAPANESE SUBMARINE I-38, JAPANESE SUBMARINE I-39.
 * Type B2, Otsu gata(S37B) (乙型 (S37B)), 6 units, JAPANESE SUBMARINE I-40, JAPANESE SUBMARINE I-41, JAPANESE SUBMARINE I-42, JAPANESE SUBMARINE I-43, JAPANESE SUBMARINE I-44, JAPANESE SUBMARINE I-45.
 * Type B3, Otsu gata(S37C) (乙型 (S37C)), 3 units, JAPANESE SUBMARINE I-54, JAPANESE SUBMARINE I-55, JAPANESE SUBMARINE I-58.
 * Hei class
 * Type C1, Hei gata(S38) (丙型 (S38)), 5 units, JAPANESE SUBMARINE I-16, JAPANESE SUBMARINE I-18, JAPANESE SUBMARINE I-20, JAPANESE SUBMARINE I-22, JAPANESE SUBMARINE I-24.
 * Type C2, Hei gata(S38B) (丙型 (S38B)), 3 units, JAPANESE SUBMARINE I-46, JAPANESE SUBMARINE I-47, JAPANESE SUBMARINE I-48.
 * Type C3, Hei gata(S37D) (丙型 (S37D)), 3 units, JAPANESE SUBMARINE I-52, JAPANESE SUBMARINE I-53, JAPANESE SUBMARINE I-55.
 * Tei class
 * Type D1, Tei gata(S51/S51B) (丁型 (S51/S51B)), 12 units, JAPANESE SUBMARINE I-361, JAPANESE SUBMARINE I-362, JAPANESE SUBMARINE I-363, JAPANESE SUBMARINE I-364, JAPANESE SUBMARINE I-365, JAPANESE SUBMARINE I-366, JAPANESE SUBMARINE I-367, JAPANESE SUBMARINE I-368, JAPANESE SUBMARINE I-369, JAPANESE SUBMARINE I-370, JAPANESE SUBMARINE I-371, JAPANESE SUBMARINE I-372 (S51B).
 * Type D2, Tei gata kai(S51C) (丁型改 (S51C)), JAPANESE SUBMARINE I-373.
 * Kaidai class
 * Type KD1, Kaidai 1 gata (海大I型), JAPANESE SUBMARINE I-51.
 * Type KD2, Kaidai 2 gata (海大II型), JAPANESE SUBMARINE I-152 (ex-I-52).
 * Type KD3a, Kaidai 3 gata a (海大III型a), 4 units, JAPANESE SUBMARINE I-153 (ex-I-53), JAPANESE SUBMARINE I-154 (ex-I-54), JAPANESE SUBMARINE I-155 (ex-I-55), JAPANESE SUBMARINE I-158 (ex-I-58).
 * Type KD3b, Kaidai 3 gata b (海大III型b), 5 units, JAPANESE SUBMARINE I-156 (ex-I-56), JAPANESE SUBMARINE I-157 (ex-I-57), JAPANESE SUBMARINE I-159 (ex-I-59), JAPANESE SUBMARINE I-60, JAPANESE SUBMARINE I-63.
 * Type KD4, Kaidai 4 gata (海大IV型), 3 units, JAPANESE SUBMARINE I-61, JAPANESE SUBMARINE I-162 (ex-I-62), JAPANESE SUBMARINE I-164 (ex-I-64)
 * Type KD5, Kaidai 5 gata (海大V型), 3 units, JAPANESE SUBMARINE I-165 (ex-I-65), JAPANESE SUBMARINE I-166 (ex-I-66), JAPANESE SUBMARINE I-67
 * Type KD6a, Kaidai 6 gata a (海大VI型a), 6 units, JAPANESE SUBMARINE I-168 (ex-I-68), JAPANESE SUBMARINE I-169 (ex-I-69), JAPANESE SUBMARINE I-70, JAPANESE SUBMARINE I-171 (ex-I-71), JAPANESE SUBMARINE I-172 (ex-I-72), JAPANESE SUBMARINE I-73.
 * Type KD6b, Kaidai 6 gata b (海大VI型b), 2 units, JAPANESE SUBMARINE I-174 (ex-I-74), JAPANESE SUBMARINE I-175 (ex-I-75).
 * Type KD7, Kaidai 7 gata (海大VII型), 10 units, JAPANESE SUBMARINE I-176 (ex-I-76), JAPANESE SUBMARINE I-177, JAPANESE SUBMARINE I-178, JAPANESE SUBMARINE I-179, JAPANESE SUBMARINE I-180, JAPANESE SUBMARINE I-181, JAPANESE SUBMARINE I-182, JAPANESE SUBMARINE I-183, JAPANESE SUBMARINE I-184, JAPANESE SUBMARINE I-185.
 * Sentoku type, Toku gata (特型), 3 units, JAPANESE SUBMARINE I-400, JAPANESE SUBMARINE I-401, JAPANESE SUBMARINE I-402 (I-404 not launched, I-405 not completed).
 * Sentaka type, Sentaka (潜高), 3 units, JAPANESE SUBMARINE I-201, JAPANESE SUBMARINE I-202, JAPANESE SUBMARINE I-203 (I-204 to I-208 not completed).
 * Senho type, Senho (潜補), JAPANESE SUBMARINE I-351 (I-352 not completed).
 * Kiraisen (Mine layer) type, Kiraisen (機雷潜), 4 units JAPANESE SUBMARINE I-121 (ex-I-21), JAPANESE SUBMARINE I-122 (ex-I-22), JAPANESE SUBMARINE I-123 (ex-I-23), JAPANESE SUBMARINE I-124 (ex-I-24).
 * Captured German submarines, 6 units, I-501 (ex-GERMAN SUBMARINE U-181), I-502 (ex-GERMAN SUBMARINE U-862), I-503 (ex-UIT-24, ex-ITALIAN SUBMARINE Comandante Cappellini), I-504 (ex-UIT-25, ex-ITALIAN SUBMARINE Luigi Torelli), I-505 (ex-GERMAN SUBMARINE U-219), I-506 (ex-GERMAN SUBMARINE U-195).

2nd Class submarines

 * Type F
 * Type F1, Ro-ichi-gata (F1型（呂一型) 2 units, JAPANESE SUBMARINE Ro-1, JAPANESE SUBMARINE Ro-2.
 * Type F2, Ro-san-gata (F2型（呂三型), 3 units, JAPANESE SUBMARINE Ro-3, JAPANESE SUBMARINE Ro-4, JAPANESE SUBMARINE Ro-5.
 * Kaichū type
 * Type K1, Kaichū 1 gata (海中I型), 2 units, JAPANESE SUBMARINE Ro-11, JAPANESE SUBMARINE Ro-12.
 * Type K2, Kaichū 2 gata (海中II型), 3 units, JAPANESE SUBMARINE Ro-13, JAPANESE SUBMARINE Ro-14, JAPANESE SUBMARINE Ro-15.
 * Type K3, Kaichū 3 gata (海中III型), 10 units, JAPANESE SUBMARINE Ro-16, JAPANESE SUBMARINE Ro-17, JAPANESE SUBMARINE Ro-18, JAPANESE SUBMARINE Ro-19, JAPANESE SUBMARINE Ro-20, JAPANESE SUBMARINE Ro-21, JAPANESE SUBMARINE Ro-22, JAPANESE SUBMARINE Ro-23, JAPANESE SUBMARINE Ro-24, JAPANESE SUBMARINE Ro-25.
 * Type K4, Kaichū 4 gata (海中IV型), 3 units, JAPANESE SUBMARINE Ro-26, JAPANESE SUBMARINE Ro-27, JAPANESE SUBMARINE Ro-28.
 * Type KT (Toku-Chū), Kaichū 5 gata (海中V型), 5 units, JAPANESE SUBMARINE Ro-29,JAPANESE SUBMARINE Ro-30, Submarine No. 70, JAPANESE SUBMARINE Ro-31, JAPANESE SUBMARINE Ro-32.
 * Type K6, Kaichū 6 gata (海中VI型), 2 units, JAPANESE SUBMARINE Ro-33, JAPANESE SUBMARINE Ro-34.
 * Type KS (Sen-Chū), Kaichū 7 gata (海中VII型), 18 units, JAPANESE SUBMARINE Ro-35, JAPANESE SUBMARINE Ro-36, JAPANESE SUBMARINE Ro-37, JAPANESE SUBMARINE Ro-38, JAPANESE SUBMARINE Ro-39, JAPANESE SUBMARINE Ro-40, JAPANESE SUBMARINE Ro-41, JAPANESE SUBMARINE Ro-42, JAPANESE SUBMARINE Ro-43, JAPANESE SUBMARINE Ro-44, JAPANESE SUBMARINE Ro-45, JAPANESE SUBMARINE Ro-46, JAPANESE SUBMARINE Ro-47, JAPANESE SUBMARINE Ro-48, JAPANESE SUBMARINE Ro-49, JAPANESE SUBMARINE Ro-50, JAPANESE SUBMARINE Ro-55, JAPANESE SUBMARINE Ro-56.
 * Type L
 * Type L1, Ro go jū 1 gata (L1型), 2 units, JAPANESE SUBMARINE Ro-51, JAPANESE SUBMARINE Ro-52.
 * Type L2, Ro go jū 2 gata (L2型), 4 units, JAPANESE SUBMARINE Ro-53, JAPANESE SUBMARINE Ro-54, JAPANESE SUBMARINE Ro-55, JAPANESE SUBMARINE Ro-56.
 * Type L3, Ro go jū 3 gata (L3型), 3 units, JAPANESE SUBMARINE Ro-57, JAPANESE SUBMARINE Ro-58, JAPANESE SUBMARINE Ro-59.
 * Type L4, Ro go jū 4 gata (L4型), 9 units, JAPANESE SUBMARINE Ro-60, JAPANESE SUBMARINE Ro-61, JAPANESE SUBMARINE Ro-62, JAPANESE SUBMARINE Ro-63, JAPANESE SUBMARINE Ro-64, JAPANESE SUBMARINE Ro-65, JAPANESE SUBMARINE Ro-66, JAPANESE SUBMARINE Ro-67, JAPANESE SUBMARINE Ro-68.
 * Ko Type, 18 units, JAPANESE SUBMARINE Ro-100, JAPANESE SUBMARINE Ro-101, JAPANESE SUBMARINE Ro-102, JAPANESE SUBMARINE Ro-103, JAPANESE SUBMARINE Ro-104, JAPANESE SUBMARINE Ro-105, JAPANESE SUBMARINE Ro-106, JAPANESE SUBMARINE Ro-107, JAPANESE SUBMARINE Ro-108, JAPANESE SUBMARINE Ro-109, JAPANESE SUBMARINE Ro-110, JAPANESE SUBMARINE Ro-111, JAPANESE SUBMARINE Ro-112, JAPANESE SUBMARINE Ro-113, JAPANESE SUBMARINE Ro-114, JAPANESE SUBMARINE Ro-115, JAPANESE SUBMARINE Ro-116, JAPANESE SUBMARINE Ro-117.
 * Sen'yu-Shō Type, 10 units, JAPANESE SUBMARINE Ha-101, JAPANESE SUBMARINE Ha-102, JAPANESE SUBMARINE Ha-103, JAPANESE SUBMARINE Ha-104, 'JAPANESE SUBMARINE Ha-105, JAPANESE SUBMARINE Ha-106, JAPANESE SUBMARINE Ha-107, JAPANESE SUBMARINE Ha-108, JAPANESE SUBMARINE Ha-109, JAPANESE SUBMARINE Ha-111 (Ha-110 and Ha-112 not completed)
 * Sentaka-Shō Type, 11 units, JAPANESE SUBMARINE Ha-201, JAPANESE SUBMARINE Ha-202, JAPANESE SUBMARINE Ha-203, JAPANESE SUBMARINE Ha-204, JAPANESE SUBMARINE Ha-205, JAPANESE SUBMARINE Ha-207, JAPANESE SUBMARINE Ha-208, JAPANESE SUBMARINE Ha-209, JAPANESE SUBMARINE Ha-210, JAPANESE SUBMARINE Ha-216 (Ha-206, Ha-211 to Ha-215, Ha-217 to Ha-279 not completed)
 * Ex-German submarines, 2 units, Ro-500 (ex-GERMAN SUBMARINE U-511), Ro-501 (ex-GERMAN SUBMARINE U-1224).

3rd Class submarines

 * Type A Kō-hyōteki-class submarine, 101 units.
 * Kairyū-class submarine, about 250 units (750 planned).
 * Kaiten, about 1000 units.
 * C1 type
 * C2 type
 * S1 type
 * Kawasaki class
 * S2 type
 * No.71, Dai 71 gou-kan (第71号艦),71-gou

Army submarines

 * Type 3 submergence transport vehicle
 * Yu 1-class submarine
 * Yu 1001-class submarine
 * Yu 2001-class submarine

Other submarines

 * Holland-class submarine
 * modified Holland class

Suicide vessels

 * Shinyo, 6,200 units.
 * Kaiten, approx. 420 units.