List of active Japan Maritime Self-Defense Force ships

List of active ships of the Japan Maritime Self-Defense Force is a list of ships in active service with the Japan Maritime Self-Defense Force.

The JMSDF is one of the world's largest navies, and the second largest navy in Asia in terms of fleet tonnage. As of 2025, the JMSDF operates a total of 155 vessels (including minor auxiliary vessels), including: two multi-role aircraft-carrying cruisers (or light aircraft carriers), two helicopter destroyers (or helicopter carriers), 36 destroyers, six frigates, six destroyer escorts (or frigates), 23 attack submarines, 19 mine countermeasure vessels, six patrol vessels, three landing ship tanks, seven training vessels, and a fleet of various auxiliary ships.

As of 2013, a procurement list, added to the current National Defense Program Guidelines (NDPG), has revealed that, among other things, an additional 48 escort vessels of various classes are planned to be added to the MSDF fleet in the 2020s. In addition, as of 7 July 2013, it was being reported that plans were under way to procure two more Aegis equipped destroyers in order to bolster ongoing BMD efforts, the first to be contracted for in fiscal year 2015 and the other in fiscal year 2016.Japan eyes two new Aegis destroyers to counter N. Korea missile threat Japan Times, 7 July 2013

Submarine fleet

Submarines Class In service Picture Type Ship No. Comm. Displacement Notes Submarines (23 in service) Oyashio-class 6 Attack submarine (Diesel-electric) SS-595 2003 2,750 tonnes (surfaced)4,000 tonnes (submerged) 2 of 11 built converted to training ships (see Training Vessels below), and 3 decommissioned. SS-596 2004 SS-597 2005 SS-598 2006 SS-599 2007 SS-600 2008 10 Attack submarine (AIP sterling engine + lead-acid batteries) SS-501 2009 2,900 tonnes (surfaced)4,200 tonnes (submerged) SS-502 2010 SS-503 2011 SS-504 2012 SS-505 2013 SS-506 2015 SS-507 2016 SS-508 2017 SS-509 2018 SS-510 2019 2 Attack submarine (AIP lithium-ion batteries) SS-511 2020 The JS Ōryū is the world's first submarine powered by lithium-ion batteries.Japan commissions first Sōryū-class submarine equipped with lithium-ion batteries Jane's, 05 March 2020 SS-512 2021 5 (+3 being built)Attack submarine (AIP lithium ion)SS-5132022 3,000 tonnes (surfaced) Total planned of 10. SS-514 2023 SS-515 2024JS Raigei SS-516 2025JS Chogei SS-517 2026

Surface fleet Multi-role aircraft-carrying cruiser (de facto light aircraft carrier) - CVM Officially classed as “aircraft-carrying multi-role cruiser” the class is being converted to function as light aircraft carriers. Class In service Picture Type Ship No. Comm. Displacement NotesCVM - Multi-role aircraft-carrying cruiser (light aircraft carrier; 2 in service) 2 CVM (multi-role aircraft-carrying cruiser) CVM-183 2015 27,000 tonnes Converting into light aircraft carrier configuration to carry F-35B V/STOL fighters from the mid-2020s. CVM-184 2017

Helicopter destroyers (de facto helicopter carrier) - DDH Officially classed as "helicopter destroyers", these vessels have a full-length flight deck helicopter carrier configuration. Class In service Picture Type Ship No. Comm. Displacement Notes DDH – Helicopter-carrying destroyers (2 in service) 2 DDH (de facto helicopter carrier) DDH-181 2009 19,000 tonnes DDH-182 2011

Landing ships Class In service Picture Type Ship No. Comm. Displacement NotesLanding ships - LST (3 in service) 3 Landing ship tank (de facto Amphibious transport dock) LST 4001 1998 14,000 tonnes Class upgraded to land Boeing MV-22s and carry the AAV7A1 Amphibious Assault Vehicles. LST 4002 2002 LST 4003 2003 Landing craft (15 in service) 6 LCAC (air-cushioned landing craft) — LCAC-2101 1997 182 tonnes 2 carried with each ships — LCAC-2102 1997 — LCAC-2103 2001 — LCAC-2104 2001 — LCAC-2105 2002 — LCAC-2106 2002 7 LCM (Landing craft mechanized) — YL-12 — 50 tonnes — YL-13 — — YL-14 — — YL-15 — — YL-16 — — YL-17 — — YL-18 — 1 LCU (Landing craft utility) LCU-2002 1992 50 tonnes decommissioned in 2022 1 LCL (Landing craft lighters) — YL-119 — 200 tonnes

Destroyers - DDG/DD The JMSDF uses the official term Destroyers despite some larger ships being analogous to cruisers and smaller vessels being analogous to frigates by most international classifications. Class In service Picture Type Ship No. Comm. Displacement NotesAegis equipped destroyers - DDG (8 in service) 4 DDG (Aegis) DDG-173 1993 9,500 tonnes DDG-174 1995 DDG-175 1996 DDG-176 1998 2 DDG (Aegis) DDG-177 2007 10,000 tonnes DDG-1782008 2 DDG (Aegis) DDG-179 2020 10,500 tonnes DDG-180 2021 Destroyers - DD (26 in service) 6 DD DD-153 1989 5,200 tonnes Being replaced by the Yamagiri (DD-152) has since been reclassified as a training vessel. DD-154 1989 DD-155 1990 DD-156 1990 DD-157 1990 DD-158 1991 9 DD DD-101 1996 6,200 tonnes DD-102 1997 DD-103 1999 DD-104 1999 DD-105 2000 DD-106 2000 DD-107 2001 DD-108 2002 DD-109 2002 5 DD DD-110 2003 6,400 tonnes DD-111 2003 DD-112 2004 DD-113 2005 DD-114 2006 4 DD DD-115 2012 6,800 tonnes DD-116 2013 DD-117 2014 DD-118 2014 2 DD DD-119 2018 6,800 tonnes DD-120 2019

Frigate Multi-Purpose/Mine - FFM Class In service Picture Type Ship No. Comm. Displacement NotesFrigate Multi-Purpose/Mine - FFM (10 in Service) 10 (+2 ordered) Frigate FFM-1 2022 5,500 tonnes Successor of the and Designed for anti-submarine, anti-surface, and anti-air warfare, as well as surveillance and minesweeping

commissioned in June 2026.

Twelve instead of 22 are planned in total. A new design should make up the 12 other ships. FFM-2 2022 FFM-3 2022 FFM-4 2023 FFM-5 2024 FFM-6 2024 FFM-7 2025 FFM-82025FFM-92026 FFM-10 2026

Destroyer escorts - DE Class In service Picture Type Ship No. Comm. Displacement NotesDestroyer escorts - DE (6 in service) 6 Destroyer escort (or frigate) DE-229 1989 2,550 tonnes To be replaced by the To be retired and transferred to the Philippines starting in 2027. DE-230 1990 DE-231 1991 DE-232 1991 DE-233 1993 DE-234 1993

Mine countermeasure vessels Class In service Picture Type Ship No. Comm. Displacement Notes Mine countermeasure vessels (19 in service) 2 Mine countermeasure support ship MST-463 1997 6,850 tonnes MST-464 1998 6 Mine Sweeper Coastal MSC-687 2003 650 tonnes wooden ship, five decommissioned (one after collision, 2019) & one sunk after fire, 2024 MSC-688 2004 MSC-689 2005 MSC-690 2005 MSC-691 2006 MSC-692 2007 3 Mine Sweeper Coastal MSC-601 2008 650 tonnes wooden ship MSC-602 2009 MSC-603 2010 3 Mine Sweeper Coastal MSC-604 2012 650 tonnes FRP ship Only “Hatsushima” is equipped with a remote-controlled turret type machine gun MSC-605 2013 MSC-606 2015 4 Mine Sweeper Ocean MSO-304 2017 690 tonnes FRP ship MSO-305 2018 MSO-306 2021 MSO-307 2025

Patrol vessels Class In service Picture Type Ship No. Comm. Displacement NotesPatrol vessels (6 in service) 6 Guided-Missile Patrol Boat PG-824 2002 240 tonnes PG-825 2002 PG-826 2003 PG-827 2003 PG-828 2004 PG-829 2004

Surveillance ships Class In service Picture Type Ship No. Comm. Displacement NotesSurveillance ships (4 in service) 4 Ocean surveillance ship AOS-5201 1991 2,896 – 3,861 tonnes Equipped with a AN/UQQ-2 Surveillance Towed Array Sensor System AOS-5202 1992 AOS-5203 2021 AOS-5204 2026

Training vessels Class In service Picture Type Ship No. Comm. Displacement NotesTraining submarine (2 in service) Oyashio-class 2 Training attack submarine (Diesel-electric) TSS-3610 (former SS-593) Commissioned in 2001, converted in 2023 2,750 tonnes (surfaced)4,000 tonnes (submerged) TSS-3611 (former SS-594) Commissioned in 2002, converted in 2025 Training surface vessels (3 in service) Kashima-class 1 Cadet training ship TV-3508 1995 5,400 tonnes 1 Training guided-missile destroyers TV-3521 (former DDG-172) Commissioned in 1988, converted in 2021 6,100 tonnes Converted Hatakaze-class guided missile destroyer 1 Training destroyers TV-3515 (former DD-152) Commissioned in 1989, converted in 2025 (Second change) 4,900 tonnes Converted Asagiri-class destroyer

Auxiliary fleet

Logistics Class In service Picture Type Ship No. Comm. Displacement NotesReplenishment ships (5 in service) 3 Replenishment oiler AOE-422 1987 15,000 tonnes AOE-423 1990 AOE-424 1990 2 Replenishment oiler AOE-425 2006 25,000 tonnes AOE-4262006 Oil tankers (2 in service) 2 Yard oiler tanker — YOT-01 2022 6,000 tonnes — YOT-02 2022

Miscellaneous Class In service Picture Type Ship No. Comm. Displacement NotesExperimental ships (1 in service) Asuka-class 1 Experiment ship JS Asuka ASE-6102 1995 6,300 tonnes Performance confirmation tests for integrated navigation systems.Training support ships (2 in service) Kurobe-class 1 Training support ship JS Kurobe ATS-4202 1989 2,590 tonnes Tenryū-class 1 Training support ship JS Tenryū ATS-4203 2000 2,790 tonnes Rescue vessels (2 in service) Chihaya-class 1 Submarine rescue vessel JS Chihaya ASR-403 2000 7,000 tonnes Chiyoda-class 1 Submarine rescue vessel JS Chiyoda ASR-404 2018 7,200 tonnes JMSDF commissions new submarine rescue shipDisaster relief (1 in service) Hashidate-class 1 Accommodation ship JS Hashidate AYS-91 1999 490 tonnes Participates in disaster relief先代までの迎賓艇は全体を白1色の塗装としているが、本艇は白色なのは上半部のみである。Diving support vessels (6 in service) 6 Diving support vessel — YDT-01 2000 260 tonnes Used for EOD missions. — YDT-02 2000 — YDT-03 2001 — YDT-04 2001 — YDT-05 2003 — YDT-06 2003Cable laying ship (1 in service) Muroto-class 1 Cable laying ship JS Muroto ARC-483 2013 6,500 tonnes Icebreaker (1 in service) Shirase-class (2008) 1 Icebreaker JS Shirase AGB-5003 2009 20,000 tonnes Research ships (3 in service) Nichinan-class 1 Oceanographic research ship JS Nichinan AGS-5105 1999 4,500 tonnes Shōnan-class 1 Oceanographic research ship JS Shōnan AGS-5106 2010 4,150 tonnes Akashi-class 1 Oceanographic research ship AGS-5107 2026 3,500 tonnes Multi-purpose support ships (5 in service) 5 multi-purpose support ships AMS-4301 2002 1,000 tonnes Global Security, AMS Hiuchi Class, ship list In addition to towing non-self-propelled vessels and target vessels, the program will support shooting and torpedo drills, firefighting, rescue operations, supply transport, disaster relief to remote islands, and offshore testing of new equipment. AMS-4302 2004 AMS-4303 2004 AMS-4304 2008 AMS-4305 2008 Private Maritime Transport Services (2 in service) Not part of the JMSDF, under charter to the MoD 1 Roll-on/roll-off Hakuo 2014 17,345 tonnes Contract renewed in FY2024

Future JMSDF vessels

Authorized projects Authorized projects for the Japanese Maritime Self-Defense Force include the ongoing construction of an improved AIP-type non-nuclear attack submarine class, the recapitalization of the JMSDF's frigate fleet units, and the acquisition of a pair of JMSDF-owned oil tankers and up to four amphibious transports, as well as the pending construction of a dozen next-generation offshore patrol vessels (OPV) and two "Aegis system equipped ships" (ASEV) to provide dedicated sea-based ballistic missile defense (BMD) coverage of the Japanese home islands to replace the cancelled Aegis Ashore land-based BMD system.

29SS submarines

This submarine class has a non-nuclear air-independent propulsion (AIP) propulsion plant using improved lithium-ion batteries for enhanced silencing and operational flexibility. These submarines will also have improved sonar and weapons systems. The lead ship Taigei will serve as a test bed for the rest of the class, allowing more rapid technical upgrades to the other submarines within this class.

Aegis system equipped ships (ASEV)