Japanese Submarines.  Photographs and history of Japanese Submarines.

Japanese naval thoughts of the use of the submarine in squadrons and as part of the battle fleets. this purpose was not the best use, as later it was proven that there best use was in the sinking of naval ships and merchant ships during patrols.

KD1 class.  ordered in 1919 and completed in June 1924 at the Kure naval yard. when launched the I51 outclassed all other submarines afloat. Powered initially with 4 diesel engines then reduced to two. The I51 had a range of over 20,000 nautical miles at 10 knots on the surface    or 100 miles at 4 knots submerged. The I51 was a experimental submarine  and was removed from service in 1941 and was used as a training submarine at Kure.

        Displacement: 1390t standard; 1500t/2430t        Armament: 8-21in TT, 1-4.7in/45, 1-3in/40   8  torpedo tubes with 24 torpedoes.       Complement: 60

I51

29.11.1921

Sold 1941

KD2 class   In 1920 as part of that years naval building programme the Japanese imperial navy ordered a second experimental submarine built along the designs of the German "cruiser Submarines" which were built at the end of world war one. I52 was a larger submarine compared to I51 although her displacement was about the same. Completed in 1925 she joined the the naval fleet and carried out many experiments which were the base of future submarine development and building.  In 1940  the I52 was used for training at the Kure Naval district. and became obsolete in 1942 and was scrapped between 1944 and 1945.

        Displacement: 1390t standard; 1500t/2500t         Armament: 8-21in TT, 1-4.7in/45, 1-3in/40        Complement: 60

I52

12.6.1922

Broken up 1948

DA3a class  Based on the Britihs navy L class submariens. \ther were small submarines 

         Displacement: 1635t standard; 1800t/2300t         Armament: 8-21in TT, 1-4.7in/45            Complement: 64

I53

5.8.1925

Broken up 1948

I54

15.3.1926

Broken up c1946

I55

2.9.1925

Broken up c 1946

I58

3.10.1925

Scuttled 1.4.46

KD3b class             Displacement: 1635t standard; 1800-2300t        Armament: 8-21in, 1-4.7in/45          Complement: 79

I56

23.3.1928

Scuttled 1.4.46

I57

1.10.1928

Scuttled 1.4.46

I59

25.3.1929

Scuttled 1.4.46

I60

24.4.1929

Sunk by British destroyer in Java sea 17.1.42

I63

28.9.1927

Sunk in collision with I60 on 2 Feb 1939, raised in Jan 1940 and Broken up

KD4 class                  Displacement: 1635t standard; 1720t/2300t          Armament: 6-21in TT, 1-4.7in/45            Complement: 58

I61

12.11.1927

Sunk by collision on 6 Oct 1941, raised in Feb 1942 and scrapped

I62

29.11.1928

Scuttled 1.4.46

I64

5.10.1929

Torpedoed by US submarine Triton 17.5.42

KD5 class               Displacement: 1575t standard; 1705t/2330t           Armament: 6-21in TT, 1-3.9in/50, 1-13.2mm          Complement: 70-82

I65

2.6.1931

Lost while on a Kaiten mission

I66

2.6.1931

Torpedoed by British submarine Telemachus 17.7.44

I67

7.4.1931

Sank accidentally during fleet manoeuvres 29.8.40

KD6a class                Displacement: 1400t standard; 1785t/2440t             Armament: 6-21in TT, 1-3.9in/50, 1-13.2mm           Complement: 60-84

I68

26.6.1933

Sunk in the Solomon & Central Pacific areas 27.7.43

I69

15.2.1934

Sunk in the Solomon & Central Pacific areas 4.4.44

I70

14.6.1934

Sunk in the Pearl Harbour operation 10.12.41

I71

25.8.1934

Sunk in the Solomon & Central Pacific areas 1.2.44

I72

20.6.1935

Sunk in the Solomon & Central Pacific areas 10.11.42

I73

20.6.1935

Torpedoed by US submarine Gudgeon 27.1.42

KD6b class            Displacement: 1420t standard; 1810t/2564t            Armament: 6-21in TT, 1-4.7in/45, 4-13.2mm         Complement: 60-84

I74

28.3.1937

Sunk by US forces in the Central Pacific 12.4.44

I75

16.9.1936

Sunk by US forces in the Central Pacific 4.2.44

KD7 class           Displacement: 1630t standard; 1833t/2602t         Armament: 6-21in TT, 1-4.7in/45, 2-25mm        Complement: 88

I76

7.6.1941

Sunk by US forces 16/17.5.44

I77

20.12.1941

Sunk by US forces 3.10.44?

I78

24.2.1942

Sunk by US forces 28.5.43?

I79

16.7.1942

Foundered on a training exercise 1943, refloated 1957, hull was used for test purposes

I80

7.2.1942

Sunk by US forces 26.4.44

I81

2.5.1942

Sunk by US forces 16.1.44?

I82

30.5.1942

Sunk by US forces 1.9.43?

I83

21.1.1943

Sunk by US forces 28/29.4.44

I84

12.12.1942

Sunk by US forces 19.6.44?

I85

16.9.1643

Sunk by US forces 22.6.44?

J1 class   Developed from the German Cruiser type submarine  design. This design was an excellent design and fulfilled all its role. These were the first Japanese submarines armed with  two 5.,5 inch gun. It had the capability to be at sea for 60 days. it had a range of 24,000 nautical miles at  10 knots and 60 mile submerged at 3 knots.  During 1942 I 1 and I 2 were modified to a transport submarine role. it had the 5.5 inch guns removed and a reduction of torpedo carrying  capability. In its place  it could carry  a 46 ft Daihatsu landing craft or Amphibious tank or other forms of stores. 

          Displacement: 1970t standard; 2135t/2791t           Armament: 6-21in TT, 2-5.5in/40           Complement: 92

I1

15.10.1924

Sunk in southwest Pacific area while supplying beleaguered island bases 29.1.43

I2

23.2.1925

Sunk in southwest Pacific area 7.4.44

I3

8.6.1925

Sunk in southwest Pacific area while supplying beleaguered island bases 9/10.12.42

I4

22.5.1928

Sunk in southwest Pacific area while supplying beleaguered island bases 25.12.42

J1M class    Designed as a long range scouting  submarine. When completed I5 had a aircraft hanger which retracted into the deck when aircraft was not in use.  There were two hangers which carried the aircraft one contained the main fuselage and the floats and the other held the wings. this system was not satisfactory way to carry an aircraft as it had to be assembled on the catapult and during this process the submarine was very vulnerable as it took along time to assemble the aircraft. The seaplane was remove din 1940 and the submarine was altered to become a attack submarine and a 5.5 inch gun was fitted instead of the hanger. The submarine had similar performance as the I class.  During the war the submarine did not  inflict any damage on shipping before she was sunk by American DE east of Guam, 19.7.44

          Displacement: 2080t standard; 2243/2921t            Armament: 6-21in TT, 1-5.5/40, 1 air craft             Complement: 93

I5

19.6.1931

Sunk by American DE east of Guam, 19.7.44

J2 class        Displacement: 1900t standard; 2243t/3061t           Armament: 6-21in TT, 1-5in/40 DP, 1-13.2mm AA, 1 aircraft         Complement: 97

I6

31.3.1934

Possibly sunk by American attack in Saipan? 14.7.44

J3 class   Designed entirely in Japan it was a development from the Kaidai 3 type submarine at the time of joining the Fleet they were the largest submarines  built in Japan.  As in the previous design of the I5 they carried a seaplane. and between them they became the scouting force of thru submarine fleet.  At the end of 1944 they had there hangers and seaplane removed, and replaced with Kaiten midget submarines.  Between the class they sunk 7 Allied merchant ships.

           Displacement: 2231t standard; 2525t/3538t         Armament: 6-21in TT, 1-5.5in/40, 2-13.2mm AA, 1 aircraft         Complement: 100

I7

3.7.1935

Sunk by American forces in Aleutians 22.6.43

I8

20.7.1936

Sunk by American forces in Okinawa 31.3.45

KRS class          Displacement: 1142t standard, 1383t/1768t            Armament: 4-21in TT, 1-5.5/40, 42 mines          Complement: 51-70

I21

30.3.1926

Broken up c1946

I22

8.11.1926

Sunk by US submarine ‘Skate’ 10.6.45

I23

19.3.1927

Sunk off Guadalcanal 29.8.42?

I24

12.12.1927

Sunk in the East Indies 20.1.42

A1 class    Developed from the J3 submarine  this was a specialized design. it carried extra communication facilities.  This was the first design to have the seaplane hanger fitted to the Hull casing  in front of the conning tower. and a 5.5 inch gun fitted behind the conning tower.   They could remain at sea for 90 days.  it had a range of 16,000 miles at a cruising speed of 16 knots.  During the war I 11 damaged  a light cruiser and the whole class sunk  19 allied merchant ships.  and seriously damaged three others. 

             Displacement: 2434t standard; 2919t/4149t           Armament: 6-21in TT, 1-5.5in/40, 2-25mm AA, 1 Aircraft            Complement: 114

I9

20.5.1939

Sunk by US forces in Aleutians 15.6.43

I10

20.9.1939

Sunk by US forces in Saipan 4.7.44

I11

28.2.1941

Reported missing near Samoa 11.1.44

A2 class   was built at the Kawasaki (Kobe) naval yard. it was designed as a headquarters submarine. and had a radius of 22 nautical miles.  Although alot heavier than the I9 class  it had the dimensions as I9.  during the war I12 sunk a merchant ship of 7,176 tons.  the loss of the submarine is not sure but her last signal was on the 5ht of January 1945 and she  probably was lost in the following few days. 

         Displacement: 2390t standard; 2934t/4172t            Armament: 6-21in TT, 1-5.5in/40, 2-25mm AA, 1 aircraft           Complement: 114

I12

1943

Lost in Central Pacific but exact cause is unknown? 5.1.45

AM class                Displacement: 2620t standard; 3603t/4762t          Armament: 6-21in TT, 1-5.5in/40, 7-25mm AA, 2 aircraft          Complement: c114

I13

1944

Sunk by US forces off the Japanese coast 16.7.45

I14

1944

Broken up 1946

I15

12.4.1944

Broken up incomplete 1945

I1

10.6.1944

Broken up incomplete 1947

B1 class      A development of the earlier KD6 cruiser submarines.  The B1 Class was a superb scouting submarine  during the war the The hangers were removed and replaced with another 5.5 inch gun and re classed as attack submarines.  at the end of 1944 I 36 and I 37  were modified to carry Kaiten midget submarines.

        Displacement: 2198t standard; 2589t/3654t           Armament: 6-21in TT, 1-5.5in/40, 2-25mm AA, 1 aircraft              Complement: 101

I15

7.3.1939

Sunk by US forces 10.11.42

I17

19.7.1939

Sunk by US forces 19.8.43

I19

16.9.1939

Sunk by US forces 25.11.43

I21

24.2.1940

Sunk by US forces 27/29.11.43

I23

24.11.1939

Sunk by US forces 26.2.42

I25

8.6.1940

Sunk by US forces 3/20.9.43

I26

10.4.1940

Sunk by US forces 24.10.44

I27

6.6.1940

Sunk by British destroyers near Addu Atoll 12.2.44

I28

18.12.1940

Sunk by US forces 17.5.42

I29

29.9.1940

Sunk by US forces 26.7.44

I30

17.9.1940

Sunk by US forces 13.10.42

I31

13.3.1941

Sunk by US forces 13.6.43

I32

17.12.1940

Sunk by US forces 24.3.44

I33

1.5.1941

Sunk by US forces 13.6.44

I34

24.9.1941

Torpedoed by British submarine  ‘Taurus’ off Penang 13.11.43

I35

24.9.1941

Sunk by US forces 22.11.43

I36

1.11.1941

scuttled by  US forces 1.4.46

I37

22.10.1941

Sunk by US forces 19.11.44

I38

15.4.1942

Sunk by US forces 12.11.44

I39

15.4.1942

Sunk by US forces 26.11.43

B2 class   Ordered under the emergency naval programme of 1941.   A development of the earlier B Class (I15) submarines.  The B2 Class was a  scouting submarine  during the war some of the submarines had There hangers were removed and replaced with another 5.5 inch gun   I 44  were modified to carry 4  Kaiten midget submarines.  All the class were sunk. I 45 sunk the escort destroyer USS Eversole.  this was the only ship sunk by the class.

         Displacement: 2230t standard; 2624t/3700t            Armament: 6-21in TT, 1-5.5in/40, 2-25mm AA, 1 aircraft         Complement: 101

I40

1942

Sunk by US forces between 29.11.43 & 3.12.43

I41

1943

Sunk by US forces 28.11.44

I42

1943

Sunk by US forces 23.3.44

I43

1943

Sunk by US forces 15.2.44

I44

1943

Sunk by US forces 29.4.45

I45

1943

Sunk by US forces 28.10.44

B3 class           Displacement: 2140t standard; 2607t/3688t           Armament: 6-21in TT, 1-5.5in/40, 2-25mm AA, 1 aircraft            Complement: 101

I54

1943

Sunk 28.10.44

I56

1943

Sunk 18.4.45

I58

1944

Sunk 1.4.46

C1 class            Displacement: 2184t standard; 2554t/3561t            Armament: 8-21in TT, 1-5.5in/40, 2-25mm AA              Complement: 101

I16

28.7.1938

Sunk by US forces in Pacific theatre 19.5.44

I18

12.11.1938

11.2.43

I20

15.1.1939

3.9.43

I22

13.12.1938

5.10.42

I24

12.11.1939

11.6.43

C2 class   developed as attack submarines and ordered as part of the 1941 emergency naval building programme.  all built in 1943 at teh Sasebo naval yard,  during 1944 the class except I46 was adapted to carry Kaiten midget submarines.  the class was meant to have 6 submarines but due to the realization that the larger submarines were being lost at a higher percentage ate due to them being easier to detect by radar and asdic sonar

           Displacement: 2184t standard; 2557t/3564t            Armament: 8-21in TT, 1-5.5in/40, 2-25mm            Complement: 101

I46

1943

Sunk after 27.10.44

I47

1943

Scuttled 1.4.46

I48

1943

Sunk by US forces near Yap while on A Kaiten operation 32.1.45

C3 class            Displacement: 2095t standard; 2564t/3644t           Armament: 6-21in TT, 2-5.5in/40, 2-25mm AA           Complement: 101

I52

1943

Sunk by US forces near Azores while blockade running 24.6.44

I53

1943

Scuttled 1.4.46

I55

1943

Sunk by US forces near Tinian 28.7.44

ST class             Displacement: 1070t standard; 1291t/1450t            Armament: 4-21in TT, 2-25. AA          Complement: 31

I201

1944

To USA 1945

I202

1944

Scuttled 1946

I203

1944

To USA 1945

I204

16.12.1944

Sunk incomplete 22.6.45

I205

15.2.1945

Broken up 1948

I206

26.3.1945

Broken up incomplete 1946

SH class               Displacement: 2650t standard; 3512t/4290t            Armament: 4-21in TT, 2-3in trench mortars, 7-25mm AA            Complement: 90

I351

1944

Sunk by US submarine in West Indies 14.7.45

I352

23.4.1944

Sunk by US air attack 22.6.45

D1 class              Displacement: 1440t standard; 1779y/2215t           Armament: 1-5.5in/40, 2-25mm AA              Complement: 60

I361

1943

Sunk 30.5.45

I362

1943

Sunk 13 or 18.1.45

I363

1943

Accidentally mined while under way post-war 29.10.45

I364

1943

Sunk15 or 16.9.

44

I365

1944

Sunk 28.11.44

I366

1944

Sunk 1.4.46

I367

1944

Sunk 1.4.46

I368

1944

Sunk 27.2.45

I369

1944

Broken up c1946

I370

1944

Sunk 26.2.45

I371

1944

Sunk 24.2.45

I372

1944

Sunk 18.7.45

D2 class               Displacement: 1660t standard; 1926t/2240t           Armament: 1-5.5in/50, 2-25mm AA               Complement: 60

I373

1944

Torpedoed & sunk by US submarine ‘Spikefish’ as hostilities were ending 14.8.45

I374

-

Broken up incomplete 1945

STO class               Displacement: 3530t standard; 5223t/6560t            Armament: 8-21in TT, 1-5.5in/50, 10-25mm AA, 3 aircraft           Complement: 144

I400

1944

Scuttled 1946

I401

1944

Scuttle 1946

I402

1944

Scuttled 1.4.46

I403

-

Hit by air raid whilst being built, cancelled 1945

I404

7.7.1944

Sunk incomplete 28.7.45

I405

-

Broken up incomplete 1945

L4 class              Displacement: 988t standard; 996t/1322t          Armament: 6-21in TT, 1-3in/40 AA, 1 MG             Complement: 47-60

RO60

22.12.1995

Shipwreck on Kwajalein 29.12.41

RO61

19.5.1923

Sunk by US forces 13.8.42

RO62

19.9.1223

Broken up 1946

RO63

14.1.1924

Broken up 1946

RO64

19.8.1924

Sunk by US forces 12.4.45

RO65

25.9.1925

Sunk by US forces 4.11.42

RO66

25.10.1926

Sunk in collision with RO62 17.12.41

RO67

18.3.1926

Broken up 1946

RO68

23.2.1925

Broken up 1946

K5 class            Displacement: 700t standard; 940t surface              Armament: 4-21in TT, 1-3in/40 AA, 1-13.2mm AA               Complement: 42

RO33

10.10.1934

Sunk by an Australian destroyer near Port Moresby 29.8.42

RO34

12.12.1935

Sunk by American destroyer in Solomons 5.4.43

K6 class               Displacement: 960t standard; 1115t/1447t                 Armament: 4-21in TT, 1-3in/40 AA, 2-25mm AA             Complement: 54

RO35

4.6.1942

Sunk 25.8.43

RO36

14.10.1942

Sunk 13.6.44

RO37

30.6.1942

Sunk 22.1.44

RO38

24.12.1942

Sunk after 19.11.44

RO39

6.3.1943

Sunk 2.2.44

RO40

6.3.1943

Sunk 16.2.44

RO41

5.5.1943

Sunk 23.3.45

RO42

25.10.1942

Sunk 10/11.6.43

RO43

5.6.1943

Sunk26.2.45

RO44

1943

Sunk 16.6.44

RO45

1943

Sunk 30.4.44

RO46

1943

Sunk 25.4.45

RO47

1943

Sunk 26.9.44

RO48

1943

Sunk 14.7.44

RO49

1943

Sunk 5.4.45

RO50

1943

Sunk 1.4.46

RO55

1944

Sunk 7.2.45

RO56

1944

Sunk 9.4.45

KS class                Displacement: 525t standard; 601/782t           Armament: 4-21in TT, 2-25mm AA             Complement: 38

RO100

6.12.1941

Sunk 25.11.43

RO101

17.5.1942

Sunk 15.9.43

RO102

17.5.1942

Sunk 14.5.43

RO103

6.12.1941

Sunk after 28.7.43

RO104

11.7.1942

Sunk 23.5.44

RO105

11.7.1942

Sunk 31.5.44

RO106

30.5.1942

Sunk 22.5.44

RO107

30.5.1942

Sunk 12.7.43

RO108

26.10.1942

Sunk 26.5.44

RO109

1942

Sunk 29.4.45

RO110

1943

Sunk 11.2.44

RO111

1943

Sunk 10.6.44

RO112

1943

Sunk 11.2.45

RO113

1943

Sunk 12.2.45

RO114

1943

Sunk 17.6.44

RO115

1943

Sunk 31.1.45

RO116

1943

Sunk 24.5.44

RO117

1943

Sunk 17.6.44

No 71              Displacement: 195t standard, 213t/240t                 Armament: 3-18in TT               Complement: 11

71

1938

Broken up 1940

SS class        Displacement: 370t standard; 429t/493t         Armament: 1-25mm AA         Complement: 21

HA101

1944

Broken up 1946

HA102

1944

Broken up 1946

HA103

1944

Scuttled 1.4.46

HA104

1944

Broken up 1946

HA105

1945

Scuttled 1.4.46

HA106

1944

Scuttled 1.4.46

HA107

1945

Scuttled 1.4.46

HA108

1945

Scuttled 1.4.46

HA109

1945

Scuttled 1.4.46

HA110

1945

Sunk after springing a leak 16.4.46

HA111

1945

Scuttled 1.4.46

HA112

1945

Broken up 1946

STS class            Displacement: 320t standard, 377t/440t                  Armament: 2-21in TT, 1-7.7mm MG               Complement: 22

HA201

1945

Scuttled 1.4.46

HA202

1945

Scuttled 1.4.46

HA203

1945

Broken up 1948

HA204

1945

Wrecked in a storm 29.10.45

HA205

1945

Broken up 1946

HA206

10.7.1945

Sank in a storm 25.8.45

HA207

1945

Scuttled 5.4.46

HA208

1945

Scuttled 1.4.46

HA209

1945

Broken up 1946

HA210

1945

Scuttled 5.4.46

HA211

24.4.1946

Broken up incomplete 1946

HA212

25.6.1945

Broken up incomplete 1946

HA213

29.7.1945

Broken up 1946

HA214

15.8.1945

Broken up incomplete 1946

HA215

15.6.1945

Scuttled incomplete 5.4.46

HA216

1945

Scuttled 5.4.46

HA217

26.6.1945

Scuttled incomplete 5.4.46

HA218

2.7.1945

Broken up 1946

HA219

12.7.1945

Scuttled incomplete 54.4.46

HA221

4.8.1945

Broken up 1946

HA228

18.7.1945

 Scuttled incomplete 5.4.46

HA229

17.7.1945

Broken up 1946

HA230

1946

Broken up incomplete 1946

Yu1 class        Displacement: 273t/370t             Armament: 1-37mm AA             Complement: 13

Yu1

1943-44

-

Yu2

1943-44

-

Yu3

1943-44

-

Yu4

1943-44

-

Yu5

1943-44

-

Yu6

1943-44

-

Yu7

1943-44

-

Yu8

1943-44

-

Yu9

1943-44

-

Yu10

1943-44

Scrapped 1947

Yu11

1943-44

-

Yu12

1943-44

Scrapped 1947

Ex-US GATO class submarine

Kuroshio

15.8.55

Decommissioned 31.3.66

OYASHIO submarine         Displacement: 1139t surfaced; 1420t submerged          Armament: 4-21in TT (bow) Complement: 65

Oyashio

25.5.59

Discarded 30.9.76

HAYASHIO class submarines         Displacement: 650t surfaced; 800t submerged       Armament: 3-21in TT (bow) Complement: 43

Hayashio

31.7.61

Discarded 1979

Wakashio

28.6.60

Discarded 23.3.79

NATSUSHIO class submarines        Displacement: 690t surfaced; 850t submerged      Armament: 3-21in TT (bow) Complement: 43

Natsushio

18.9.62

Deleted 20.3.78

Fuyushio

14.12.62

Deleted 20.6.78

OSHIO class submarines         Displacement: 1650t (Oshio 1600t) standard; 2150t (Oshio 2100t) submerged       Complement: 80

Oshio

30.4.64

Deleted 20.8.81

Asashio

27.11.65

Deleted 30.3.83

Harushio

25.2.67

Deleted 30.3.84

Michishio

5.12.67

Deleted 28.3.85

Arashio

24.10.68

Deleted Mar 1986

UZUSHIO class submarines        Displacement: 1850t surfaced; 3600t submerged        Armament: 6-21in TT       Complement: 80

Uzushio

11.3.70

Deleted 24.3.87

Makishio

27.1.71

Deleted Mar 1988

Isoshio

18.3.72

ATSS 8001 Oct 1989, deleted Mar 1992

Narushio

22.11.72

ATSS 8002 Jun 1990,deleted Mar 1993

Kuroshio

22.2.74

ATSS 8003 May 1991, deleted Dec 1993

Takashio

30.6.75

ATSS 8004 Jul 1992, In service 1995

Yaeshio

19.5.77

ATSS 8005 Dec 1993, In service 1995

YUSHIO class submarines         Displacement: 2200t surface (SS 574, 577-582 2250t, SS 576 2300t) Armament: 6-21in TT           Complement: 80

Yushio

39.3.79

In service 1995

Mochishio

12.3.80

In service 1995

Setoshio

12.2.81

In service 1995

Okishio

5.3.82

In service 1995

Nadashio

27.1.83

In service 1995

Hamashio

1.1.84

In service 1995

Akishio

22.1.85

In service 1995

Takeshio

9.2.86

In service 1995

Yukishio

23.1.87

In service 1995

Sachishio

17.2.88

In service 1995

HARUSHIO class submarines         Displacement: 2450t surfaced         Armament: 6-21in TT (amidships, 20 Type 89 torpedoes or Sub-Harpoon missiles) Complement: 75

Harushio

26.7.89

In service 1995

Natsushio

20.3.90

In service 1995

Hayashio

17.1.91

In service 1995

Arashio

17.3.92

In service 1995

Wakashio

22.1.93

In service 1995

Fuyushio

16.2.94

In service 1995

-

Jun 1995

In service 1995

Improved HARUSHIO class submarines

SS 590

Nov 1996

Building

SS 591

1997

Authorised