Japan Maritime Self-Defense Force

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The Japan Maritime Self-Defense Force (海上自衛隊 Kaijō Jieitai), or JMSDF, is the naval branch of the Japan Self-Defense Force, tasked with the naval defense of Japan. It was formed following the dissolution of the Imperial Japanese Navy (IJN) after World War II. The JMSDF has a large fleet and its main tasks are to maintain control of the nation's sea lanes and to patrol territorial waters. It has also stepped up its participation in UN-led peacekeeping operations (PKOs) and Maritime Interdiction Operations (MIOs).

Force Structure[edit | edit source]

Statistics[edit | edit source]

  • Active Duty Personnel: 55,000
  • Reserve Personnel: 34,600
  • Commander of the Navy: Admiral Katsutoshi Kawano
  • Active Vessels: 162
  • Number of Naval Bases: 8 (Fukuoka, Kagoshima, Kure, Maizuru, Okayama, Ominato, Sasebo, Yokosuka)
  • Number of Air Bases: 7 (Atsugai, Hachinohe, Iwakuni, Kanoya, Naha, Oomura, Tateyama)

Active Vessels[edit | edit source]

  • Fuji-class Aircraft Carrier (2, 1 UC) - 2020
    • JS Fuji (CV-01)
    • JS Tate (CV-02) - sea trials
    • JS Haku (CV-03) - fitting out
  • Yura-class Utility Landing Ship (2) - 1981
    • JS Yura (LSU-4171)
    • JS Maizuru (LSU-4172)
  • 1-Go-class Landing Craft (2) - 1988
    • JS Yusotei 1-Go (LCU-2001)
    • JS Yusotei 2-Go (LCU-2002)
  • Oosumi-class Tank Landing Ship (3) - 1998
    • JS Oosumi (LST-4001)
    • JS Shimokita (LST-4002)
    • JS Kunisaki (LST-4003)
  • LCAC-class Air Cushioned Landing Craft (6) - 1998
    • JS LCAC-01 (LCAC-2101)
    • JS LCAC-02 (LCAC-2102)
    • JS LCAC-05 (LCAC-2103)
    • JS LCAC-04 (LCAC-2104)
    • JS LCAC-05 (LCAC-2105)
    • JS LCAC-06 (LCAC-2106)
  • J-LHD (2 planned) - 20XX
    • JS Unnamed
    • JS Unnamed
  • Hyuuga-class Helicopter Destroyer (2) - 2009
    • JS Hyuuga (DDH-181)
    • JS Ise (DDH-182)
  • Izumo-class Helicopter Destroyer (2) - 2015
    • JS Izumo (DDH-183)
    • JS Kaga (DDH-184)
  • Hatakaze-class Guided Missile Destroyer (2) - 1986
    • JS Hatakaze (DDG-171)
    • JS Shimakaze (DDG-172)
  • Kongou-class Guided Missile Destroyer (4) - 1993
    • JS Kongou (DDG-173)
    • JS Kirishima (DDG-174)
    • JS Myoukou (DDG-175)
    • JS Choukai (DDG-176)
  • Atago-class Guided Missile Destroyer (4) - 2007
    • JS Atago (DDG-177)
    • JS Ashigara (DDG-178)
    • JS Maya (DDG-179)
    • JS Haguro (DDG-180)
  • Yukinami-class Guided Missile Destroyer (2) - 2020
  • Asagiri-class Destroyer (8) - 1988
    • JS Asagiri (DD-151)
    • JS Yamagiri (DD-152)
    • JS Yuugiri (DD-153)
    • JS Amagiri (DD-154)
    • JS Hamagiri (DD-155)
    • JS Setogiri (DD-156)
    • JS Sawagiri (DD-157)
    • JS Umigiri (DD-158)
  • Murasame-class Destroyer (9) - 1996
    • JS Murasame (DD-101)
    • JS Harusame (DD-102)
    • JS Yudachi (DD-103)
    • JS Kirisame (DD-104)
    • JS Inazuma (DD-105)
    • JS Samidare (DD-106)
    • JS Ikazuchi (DD-107)
    • JS Akebono (DD-108)
    • JS Ariake (DD-109)
  • Takanami-class Destroyer (5) - 2003
    • JS Takanami (DD-110)
    • JS Onami (DD-111)
    • JS Makinami (DD-112)
    • JS Sazanami (DD-113)
    • JS Suzunami (DD-114)
  • Akizuki-class Destroyer (4) - 2012
    • JS Akizuki (DD-115)
    • JS Teruzuki (DD-116)
    • JS Suzutsuki (DD-117)
    • JS Fuyuzuki (DD-118)
  • Asahi-class Destroyer (2) - 2018
    • JS Asahi (DD-119)
    • JS Shiranui (DD-120)
  • Isokaze-class Destroyer (4 planned) - 2020
    • JS Isokaze (DD-121) - planned for construction
    • JS Yukikaze (DD-122) - planned for construction
    • JS Tokitsukaze (DD-123) - planned for construction
    • JS Amatsukaze (DD-124) - planned for construction
  • Abukuma-class Destroyer Escort (6) - 1989
    • JS Abukuma (DE-229)
    • JS Jintsu (DE-230)
    • JS Ooyodo (DE-231)
    • JS Sendai (DE-232)
    • JS Chikuma (DE-233)
    • JS Tone (DE-234)
  • Mogami-class Frigate (5, 3 UC, 4 planned) - 2022
    • JS Mogami (FFM-01)
    • JS Kumano (FFM-02)
    • JS Noshiro (FFM-03)
    • JS Mikuma (FFM-04)
    • JS Yahagi (FFM-05) - sea trials
    • JS Agano (FFM-06) - fitting out
    • JS Niyodo (FFM-07) - fitting out
    • JS Unnamed (FFM-08) - under construction
    • JS Unnamed (FFM-09) - planned for construction
    • JS Unnamed (FFM-10) - planned for construction
    • JS Unnamed (FFM-11) - planned for construction
    • JS Unnamed (FFM-12) - planned for construction
  • Harushio-class Patrol Submarine (4) - 1990
    • JS Harushio (SS-583)
    • JS Natsushio (SS-584)
    • JS Arashio (SS-586)
    • JS Wakashio (SS-587)
  • Oyashio-class Submarine (11) - 1998
    • JS Oyashio (SS-590)
    • JS Michishio (SS-591)
    • JS Uzushio (SS-592)
    • JS Makishio (SS-593)
    • JS Isoshio (SS-594)
    • JS Narushio (SS-595)
    • JS Kuroshio (SS-596)
    • JS Takashio (SS-597)
    • JS Yaeshio (SS-598)
    • JS Setoshio (SS-599)
    • JS Mochishi (SS-600)
  • Souryuu-class Submarine (12) - 2009
    • JS Souryuu (SS-501)
    • JS Unryuu (SS-502)
    • JS Hakuryuu (SS-503)
    • JS Kenryuu (SS-504)
    • JS Zuiryuu (SS-505)
    • JS Kokuryu (SS-506)
    • JS Jinyuu (SS-507)
    • JS Sekiryuu (SS-508)
    • JS Seiryuu (SS-509)
    • JS Shouryuu (SS-510)
    • JS Ooryuu (SS-511)
    • JS Touryuu (SS-512)
  • Taigei-class Hunter-Killer Submarine (1, 4 UC, 7 planned) - 2022
    • JS Taigei (SS-513)
    • JS Hakugei (SS-514) - fitting out
    • JS Jingei (SS-515) - fitting out
    • JS Unnamed (SS-516) - under construction
    • JS Unnamed (SS-517) - under construction
    • JS Unnamed (SS-518) - planned for construction
    • JS Unnamed (SS-519) - planned for construction
    • JS Unnamed (SS-520) - planned for construction
    • JS Unnamed (SS-521) - planned for construction
    • JS Unnamed (SS-522) - planned for construction
    • JS Unnamed (SS-523) - planned for construction
    • JS Unnamed (SS-524) - planned for construction
  • Sagami-class Combat Support Ship (1) - 1979
  • Futami-class Ocean Survey Vessel (2) - 1979
    • JS Futami (AGS-5102)
    • JS Wakata (AGS-5104)
  • Suma-class Ocean Survey Vessel (1) - 1982
    • JS Suma (AGS-5103)
  • Towada-class Combat Support Ship (3) - 1987
    • JS Towada (AOE-422)
    • JS Tokiwa (AOE-423)
    • JS Hamana (AOE-424)
  • Kurobe-class Training Support Ship (1) - 1989
    • JS Kurobe (ATS-4202)
  • Hibiki-class Ocean Surveillance Ship (3) - 1991
    • JS Hibiki (AOS-5201)
    • JS Harima (AOS-5202)
    • JS Aki (AOS-5203)
  • Asuka-class Experimental Testbed Vessel (1) - 1995
    • JS Asuka (ASE-6102)
  • Nichinan-class Ocean Survey Vessel (1) - 1999
    • JS Nichinan (AGS-5105)
  • Hashidate-class Yacht (1) - 1999
    • JS Hashidate (ASY-91)
  • Chihaya-class Submarine Rescue Ship (1) - 2000
    • JS Chihaya (ASR-403)
  • Tenryu-class Training Support Ship (2) - 2000
    • JS Tenryu (ATS-4203)
    • JS Tatsuta (ATS-4204)
  • YDT-01-class Diving Support Vessel (6) - 2000
    • JS YDT-01
    • JS YDT-02
    • JS YDT-03
    • JS YDT-04
    • JS YDT-05
    • JS YDT-06
  • Hiuchi-class Multirole Support Ship (5) - 2002
    • JS Hiuchi (AMS-4301)
    • JS Suo (AMS-4302)
    • JS Amakusa (AMS-4303)
    • JS Genkai (AMS-4304)
    • JS Enshu (AMS-4305)
  • Mashu-class Combat Support Ship (2) - 2004
    • JS Mashi (AOE-425)
    • JS Omi (AOE-426)
  • Shirase-class Icebreaker (1) - 2009
    • JS Shirase (AGB-5003)
  • Shounan-class Ocean Survey Vessel (1) - 2010
    • JS Shounan (AGS-5106)
  • Muroto-class Cablelayer (1) - 2012
    • JS Muroto (ARC-483)
  • Chiyoda-class Submarine Rescue Vessel (1 UC) - 2018
    • JS Chiyoda (AS-404) - fitting out
  • YOT-1-class Yard Oiler Tanker (2 UC) - 2022
    • JS YOT-1 - fitting out
    • JS YOT-2 - fitting out
  • Towada-class replacement (3 planned) - 20XX
    • JS Unnamed (AOE-427) - planned for construction
    • JS Unnamed (AOE-428) - planned for construction
    • JS Unnamed (AOE-429) - planned for construction
  • Kashima-class Training Ship (4) - 1995
    • JS Kashima (TV-3508)
    • JS Kashii (TV-3509)
    • JS Katori (TV-3510)
    • JS Kashihara (TV-3511)
  • Shimayuki-class Training Vessel (3) - 1999
    • JS Shimayuki (TV-3513)
    • JS Shirayuki (TV-3517)
    • JS Setoyuki (TV-3518)
  • Asashio-class Training Submarine (3) - 2002
    • JS Asashio (TSS-3601)
    • JS Hayashio (TSS-3606)
    • JS Fuyushio (TSS-3607)
  • Uraga-class Minesweeper Tender (2) - 1997
    • JS Uraga (MST-463)
    • JS Bungo (MST-464)
  • Sugashima-class Minesweeper (12) - 1999
    • JS Sugashima (MSC-681)
    • JS Notojima (MSC-682)
    • JS Tsunoshima (MSC-683)
    • JS Naoshima (MSC-684)
    • JS Toyoshima (MSC-685)
    • JS Ukushima (MSC-686)
    • JS Izushima (MSC-687)
    • JS Aishima (MSC-688)
    • JS Aoshima (MSC-689)
    • JS Miyajima (MSC-690)
    • JS Shishijima (MSC-691)
    • JS Kuroshima (MSC-692)
  • Hirashima-class Minesweeper (3) - 2008
    • JS Hirashima (MSC-601)
    • JS Yakushima (MSC-602)
    • JS Takashima (MSC-602)
  • Enoshima-class Minesweeper (3) - 2011
    • JS Enoshima (MSC-604)
    • JS Chichijima (MSC-605)
    • JS Hatsushima (MSC-606)
  • Awaji-class Minesweeper (3, 1 planned) - 2017
    • JS Awaji (MSO-604)
    • JS Hirado (MSO-605)
    • JS Etajima (MSO-606)
    • JS Unnamed (MSO-607) - planned for construction
  • Hayabusa-class Guided Missile Patrol Boat (6) - 2002
    • JS Hayabusa (PG-824)
    • JS Wakataka (PG-285)
    • JS Otaka (PG-286)
    • JS Kumataka (PG-287)
    • JS Umitaka (PG-288)
    • JS Shiritaka (PG-289)
  • J-LCS (12) - 202X
    • JS Unnamed (LCS-01) - planned for construction
    • JS Unnamed (LCS-02) - planned for construction
    • JS Unnamed (LCS-03) - planned for construction
    • JS Unnamed (LCS-04) - planned for construction
    • JS Unnamed (LCS-05) - planned for construction
    • JS Unnamed (LCS-06) - planned for construction
    • JS Unnamed (LCS-07) - planned for construction
    • JS Unnamed (LCS-08) - planned for construction
    • JS Unnamed (LCS-09) - planned for construction
    • JS Unnamed (LCS-10) - planned for construction
    • JS Unnamed (LCS-11) - planned for construction
    • JS Unnamed (LCS-12) - planned for construction

Aircraft of the JMSDF[edit | edit source]

Fixed Wing Aircraft[edit | edit source]

Fighters[edit | edit source]
ELINT Aircraft[edit | edit source]
Maritime Patrol Aircraft[edit | edit source]
Transport/Utility Aircraft[edit | edit source]
Trainer Aircraft[edit | edit source]

Helicopters[edit | edit source]

Future Acquisitions[edit | edit source]

Ships[edit | edit source]

  • Japan will be continuing modifications to the Izumo-class light carriers to enable them to carry the Lockheed Martin F-35B Lightning II. Both carriers are expected to have their modifications completed by 2027.
  • Japan will be building a pair of landing helicopter docks and a quartet of amphibious transport docks. The landing helicopter docks will have a length of 720 feet (219.46 meters), a beam of 124 feet (37.8 meters), a draft of 26 feet 3 inches (8 meters), a displacement of ~20,000 tons, a top speed of 24 knots (44.45 km/h). The amphibious transport docks will have a length of 689 feet (210 meters), a beam of 98 feet 5 inches (30 meters), a draft of 23 feet (7 meters), a displacement of 16,000 tons, and a top speed of 22 knots (40.74 km/h).
  • Japan will be building a trio of amphibious transport vessels based on the US Army's General Frank S. Besson-class support vessels.
  • Japan will be building a trio of mobile landing platforms based on the USN's Lewis B. Puller expeditionary mobile base and Montford Point-class expeditionary transfer dock. This class will be 787 feet 6 inches (240 meters) in length, 128 feet (39 meters) wide, have a draft of 23 feet (7 meters), a displacement of 21,000 tons, a speed of 15 knots (27.78 km/h), and a maximum complement of 240 people.
  • Japan will be building two Aegis System Equipped Vessels (ASEV) with a standard displacement of 12,000 tons. The vessels are expected to be delivered in the 2027 and 2028 fiscal years.
  • Japan will be building twelve 3,900 ton Mogami-class frigates and a further twelve of a new class of larger 4,880 frigates to replace the older Asagiri-class destroyers and Abukuma-class destroyer escorts.
  • Japan will be building at least seven 3,000 ton Taigei-class submarines to replace the older Harushio-class patrol submarines.
  • Japan is building a class of eight 6,800 ton nuclear powered fast attack submarines.
  • Japan will be building a new class of 14,500 tonne replenishment vessels to replace the aging Sagami and Towada-class combat support ships.
  • Japan will be building twelve new offshore patrol vessels to take over the patrol missions of the Abukuma-class destroyer escorts and Hayabusa-class patrol boats.

Aircraft[edit | edit source]

  • The JMSDF will be purchasing the F-35B Lightning II for the Izumo-class light carriers and the F-35C for the larger Fuji-class carriers.
  • The JMSDF will be developing a new electronic warfare aircraft based on the Kawasaki P-1.

Weapons[edit | edit source]

  • Japan and the United States will be working together to develop the Glide Phase Interceptor (GPI).
  • Japan will develop a new stealthy surface-to-ship/surface-to-surface precision guided missile with a planned service date of ~2030.