Class overview | |
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Name: | Kaidai type submarines • Kaidai I (I-51 class) • Kaidai II (I-152 class) • Kaidai IIIa (I-153 class) • Kaidai IIIb (I-156 class) • Kaidai IV (I-61/I-162 class) • Kaidai V (I-165 class) • Kaidai VIa (I-168 class) • Kaidai VIb (I-174 class) • Kaidai VII (I-176 class) |
Builders: | Kure Naval Arsenal Sasebo Naval Arsenal Yokosuka Naval Arsenal Kawasaki Shipbuilding Mitsubishi Heavy Industries |
Operators: | Imperial Japanese Navy |
Built: | 1921-1943 |
In commission: | 1924-1945 |
The Kaidai (海大型 ) was a type of 1st class submarine operated by the Imperial Japanese Navy (IJN) before and during World War II. The type name, was shortened to ''Navy Large Type Submarine (海軍式大型潜水艦 Kaigun-shiki Ōgata Sensuikan ). All Kaidai class submarines originally had a two digit boat name, from I-51 onwards. On 20 May 1942, all Kaidai submarines added a '1' to their name. For example, I-52 became I-152. Ships are listed by the three digit boat name if they had one, two digit if they were not granted one or left service before 20 May 1942.
Contents |
Kaidais were divided into seven types and two sub-types; Kaidai I - VII
Project number S22. The prototype for the class. The sole Kaidai I, I-51, was based on World War I-era German submarines. She was completed in 1924, refitted with new engines in 1932 and scrapped in 1941. I-51 never saw combat.[1]
Boat | Builder | Laid down | Launched | Completed | Fate |
No.44 Submarine I-51 [2] |
Kure Naval Arsenal | 6 April 1921 | 29 November 1921 | 20 June 1924 | Renamed I-51 on 1 November 1924. Decommissioned on 1 April 1940 |
Project number S25. There was only 1 Kaidai II, I-152 planned under the Eight-six fleet together with the I-51. She was completed in 1924, used as a training vessel until mid-1942, then struck from service. She was scrapped in 1946.
Boat | Builder | Laid down | Launched | Completed | Fate |
No.51 Submarine I-52, I-152 |
Kure Naval Arsenal | 14-02-1922 | 12-06-1923 | 20-05-1924 | Renamed I-52 on 01-11-1924, decommissioned on 01-08-1942, scrapped post-war |
Project number S26 (Kaidai IIIa) and S27 (Kaidai IIIb). The nine Kaidai IIIs were based on earlier designs, but featured a strengthened hull. The "IIIb" types were 40 cm longer and had a different bow design. All nine boats were constructed between 1927 and 1930.[3]
Of the nine Kaidai IIIs, seven survived the war, as they spent much of their time as training vessels. These were scuttled or scrapped shortly after the end of World War II. I-63 was sunk in a collision with I-60 in 1939, the former losing all her crew. I-63 was refloated and scrapped in 1940. I-60 was later sunk by HMS Jupiter.[3]
Boat | Sub type | Builder | Laid down | Launched | Completed | Results | Fate |
---|---|---|---|---|---|---|---|
I-53, I-153 | Kaidai IIIa | Kure Naval Arsenal | 01-04-1924 | 05-08-1925 | 30-03-1927 | Sank Dutch merchant ship Mösi on 27-02-1942 Sank RMS City of Manchester on 28-02-1942 Sank unknown merchant vessel on 27-02-1942 |
Decommissioned on 20-11-1945, scrapped in 1948 |
I-54, I-154 | Kaidai IIIa | Sasebo Naval Arsenal | 15-11-1924 | 15-03-1926 | 15-12-1927 | Sank Dutch merchant ship Majokaat on 02-03-1942 | Decommissioned on 20-11-1945, disposed of at Iyo Nada in May 1946 |
I-55, I-155 | Kaidai IIIa | Kure Naval Arsenal | 01-04-1924 | 02-09-1925 | 05-09-1927 | Sank Dutch merchant-man Van Lansberge on 04-02-1942 Sank Dutch merchant ship Van Cloon on 07-02-1942 Sank RMS Derrymore on 14-02-1942 Sank Norwegian merchant vessel Madrono on 18-02-1942 |
Decommissioned on 20-11-1945, disposed of at Iyo Nada in May 1946 |
I-56, I-156 | Kaidai IIIb | Kure Naval Arsenal | 03-11-1926 | 23-03-1928 | 31-03-1929 | Sank Greek merchant ship Hydra II or Norwegian merchant ship Hai Tung on 11-12-1941 Sank RMS Kuantan on 05-01-1942 Damaged Dutch merchant ship Tanimbar on 06-01-1942 Sank Dutch merchantman Van Rees on 08-01-1942 Sank Dutch merchant ship Van Riebeeck on 08-01-1942 Damaged Dutch merchant ship Patras on 13-01-1942 Sank Dutch merchant ship Togian on 04-02-1942 |
Decommissioned 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946 |
I-57, I-157 | Kaidai IIIb | Kure Naval Arsenal | 08-07-1927 | 01-10-1928 | 24-12-1929 | Sank Dutch merchant ship Djirak on 07-01-1942 | Decommissioned 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946 |
I-58, I-158 | Kaidai IIIa | Yokosuka Naval Arsenal | 03-12-1924 | 03-10-1925 | 15-05-1928 | Sank Dutch merchant ship Langkoas on 03-01-1942 Sank Dutch merchant ship Camphuys on 09-01-1942 Sank Dutch merchant vessel Pijnacker Hordijk on 22-02-1942 Sank Dutch merchant ship Boeroe on 25-02-1942 torpedoed but did not sink RMS British Judge on 28-02-1942 |
Decommissioned on 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946 |
I-59, I-159 | Kaidai IIIb | Yokosuka Naval Arsenal | 25-03-1927 | 25-03-1929 | 31-03-1930 | Sank Norwegian merchant ship Eidsvold on 20-01-1942 Sank unknown merchantman 25-01-1942 Sank Dutch merchant ship Rooseboom on 01-03-1942 |
Decommissioned on 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946 |
I-60 | Kaidai IIIb | Sasebo Naval Arsenal | 10-10-1927 | 24-04-1929 | 20-12-1929 | Sunk by HMS Jupiter in the Sunda Strait on 17 January 1942[4] | |
I-63 | Kaidai IIIb | Sasebo Naval Arsenal | 12-08-1926 | 28-09-1927 | 20-12-1928 | Lost in an accident in the Bungo Channel on 20-02-1939. Salvaged and scrapped on 21-01-1940 |
Project number S28. Slightly smaller than her predecessors and with only four torpedo tubes, three Kaidai IVs were constructed between 1929 and 1930; I-61, I-162, and I-164. I-61 was lost in a collision in 1941. I-164 was sunk by USS Triton on 17 May 1942. I-162 survived the war.[5]
Boat | Builder | Laid down; Launched; Completed |
Results | Fate |
I-61 | Mitsubishi, Kōbe Shipyard | 15-11-1926; 12-11-1927; 06-04-1929 |
Lost in an accident on 02-10-1941 in the Iki Channel. Raised and BU in 1942 | |
I-62, I-162 | Mitsubishi, Kōbe Shipyard | 20-04-1927; 29-11-1928; 24-03-1930 |
• Damaged RMS Longwood 31-01-1942 • Damaged RMS Spondilus on 04-02-1942 • Sank RMS Lakshmi Govinda on 10-03-1942 • Sank Dutch merchant ship Merkus on 16-03-1942 • Damaged RMS San Cirilo on 21-03-1942 • Sank unknown merchant ship on 22-03-1942 • Sank Soviet merchant ship Mikoyan on 03-10-1942 • Sank RMS Manon on 07-10-1942 • Damaged RMS Martaban on 13-10-1942 • Sank RMS Fort McCloud on 03-03-1944 |
Decommissioned 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946 |
I-64, I-164 | Kure Naval Arsenal | 28-03-1928; 05-10-1929; 30-08-1930 |
• Sank Dutch merchant vessel Van Overstraten on 22-01-1942 • Damaged RMS Idar on 28-01-1942 • Sank SS Florence Luckenbach on 29-01-1942 • Sank Indian merchant ship Jalatarang on 30-01-1942 • Sank Indian merchant ship Jalapalaka on 31-01-1942 • Sank Norwegian merchant ship Mabella on 13-03-1942 |
Sunk by USS Triton south of Kyūshū on 17-05-1942 |
I-65 in 1932 |
|
Class overview | |
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Built: | 1929-1932 |
In commission: | 1932-1945 |
Completed: | 3 |
Lost: | 3 |
General characteristics | |
Displacement: | 1,575 long tons (1,600 t) surfaced 2,330 long tons (2,367 t) submerged |
Length: | 97.70 m (320 ft 6 in) |
Beam: | 8.20 m (26 ft 11 in) |
Draught: | 4.70 m (15 ft 5 in) |
Propulsion: | 2 × Sulzer Mk.3 diesels 2 shafts 6,000 bhp 1,800 shp |
Speed: | 20.5 knots (38.0 km/h) surfaced 8.2 kn (15.2 km/h) submerged |
Range: |
10,000 nmi (19,000 km) at 10 kn (19 km/h) surfaced |
Test depth: | 75.0 m (246.1 ft) |
Complement: | 62 |
Armament: |
• 6 × 533 mm (21 in) torpedo tubes (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 100 mm (3.9 in) L/50 Type 88 AA gun • 1 × 12.7 mm AA gun • 1 × 7.7 mm MG |
Notes: | 230 tons fuel |
Project number S29. Three Kaidai Vs were constructed; I-165, I-166, and I-67 which were all completed in 1932. The design saw the upgrade of the deck weapon from a 50 cal to a 65 cal dual-purpose gun. The submarine was also slightly wider and taller, with an increased crew complement of 75 and an increased maximum depth of 230 ft (70 m). I-165 was modified in 1945, her gun removed and two Kaiten midget submarines/manned torpedoes substituted.[6]
None of the Kaidai Vs survived World War II. I-67 was lost with all 87 crew during an exercise in 1940. I-165 was sunk on 27 June 1945, off the east coast of Saipan. I-166 was sunk by the British submarine HMS Telemachus on 17 July 1944, off the coast of Singapore.[6]
Boat | Builder | Laid down | Launched | Completed | Results | Fate |
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I-65, I-165 | Kure Naval Arsenal | 19-12-1929 | 02-06-1931 | 01-12-1932 | • Sank Dutch merchant ship Benkoelen on 09-01-1942 • Sank Indian merchant ship Jalarajan on 15-01-1942 • Sank Netherlands merchant Johanne Justesen on 15-02-1942 • Sank RMS Bhima on 20-02-1942 • Sank SS Harmonides on 25-08-1942 • Sank USS Losmar on 24-09-1942 • Sank RMS Perseus on 16-01-1944 • Sank SS Nancy Moller on 18-03-1944 |
Converted to the Kaiten mother ship in 1945, sunk by USN patrol bomber in the Mariana Islands on 27-06-1945 |
I-66, I-166 | Sasebo Naval Arsenal | 08-11-1929 | 02-06-1931 | 10-11-1932 | • Sank Dutch submarine K XVI on 25-12-1941 • Sank USS Liberty Glo on 11-01-1942 • Sank Panamanian merchantman Nord 21-01-1942 • Sank RMS Chak Sang on 22-01-1942 • Sank RMS Kamuning 14-02-1942 • Sank Panamanian merchantman Camila on 01-10-1942 • Sank RMS Cranfield on 22-11-1942 |
Sunk by HMS Telemachus on 17-07-1945 |
I-67 | Mitsubishi, Kōbe Shipyard | 08-11-1929 | 02-06-1931 | 10-11-1932 | Lost in an accident at Minami Torishima on 29-08-1940 |
Project number S31 (Kaidai VIa) and S34 (Kaidai VIb). They were built in 1931-34 under the Maru 1 Programme and the Maru 2 Programme. Constructed between 1934 and 1938, eight Kaidai VIs were built; I-168, I-169, I-70, I-171, I-172, I-73, I-174, and I-175. At 23 knots, this type had the fastest surface speed for any submarine at the time of construction, although the speed was bettered slightly by later Japanese submarines. I-174 and I-175 were of the Kaidai VIb sub-type. They were 30 cm longer, 25 tons heavier, and equipped with a 50 cal deck weapon instead of a 65 cal.[7]
Kaidai VIs contributed to the sinking of two American aircraft carriers during World War II. The destruction of these submarines also hold some milestones; I-70 was Japan's first major warship casualty in World War II, and the sinking of I-73 represented the first warship kill by a United States Navy submarine in the war.[7]
Boat | Sub types | Builder | Laid down | Launched | Completed | Results | Fate |
I-68, I-168 | Kaidai VIa (Early production) |
Kure Naval Arsenal | 18 June 1931 | 26 June 1933 | 31 July 1934 | Sank USS Hammann (DD-412) on 06 June 1942 Sank USS Yorktown (CV-5) on 07 June 1942 |
Sunk by USS Scamp at north of Rabaul 27 July 1943 |
I-69, I-169 | Kaidai VIa (Early production) |
Mitsubishi, Kōbe Shipyard | 22 December 1932 | 15 February 1934 | 28 September 1935 | Sank Dutch merchantman Tjinegara 21 July 1942 | Sunk by air raid at Truk on 04 April 1944 |
I-70, I-70 | Kaidai VIa (Early production) |
Sasebo Naval Arsenal | 25 January 1933 | 14 June 1934 | 09 November 1935 | Sunk by aircraft from USS Enterprise in the Hawaiian Islands on 10 December 1941 | |
I-71, I-171 | Kaidai VIa (Late production) |
Kawasaki, Kōbe Shipyard | 15 February 1933 | 25 August 1934 | 24 December 1935 | Sank USS General Royal T. Frank on 19 January 1942 | Sunk by USS Guest and USS Hudson west of Buka Island on 30 January 1944 |
I-72, I-172 | Kaidai VIa (Late production) |
Mitsubishi, Kōbe Shipyard | 16 December 1933 | 06 April 1935 | 07 January 1937 | Sank USS Prusa on 19 December 1941 Sank the oiler USS Neches on 23 January 1942 |
Sunk by USS Southard at San Cristobal 10 November 1942 |
I-73 | Kaidai VIa (Late production) |
Kawasaki, Kōbe Shipyard | 05 September 1933 | 20 June 1935 | 07 January 1937 | (1). Sunk by USS Gudgeon at Midway Atoll on 27 January 1942 (2). Sunk by USS Long, USS Jarvis and USS Trever at Pearl Harbor on 29 January 1942 |
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I-74, I-174 | Kaidai VIb | Sasebo Naval Arsenal | 16 October 1934 | 28 March 1937 | 15 August 1938 | Sank US Army transport Portmar on 16 June 1943 and damaged USS LST-469 in an attack on Convoy GP55 on 16 June 1943 | Sunk by a United States Navy B-24 Liberator patrol aircraft near Truk on 12 April 1944 |
I-75, I-175 | Kaidai VIb | Mitsubishi, Kōbe Shipyard | 01 November 1934 | 16 September 1936 | 18 December 1938 | Sank USS Manini 18 December 1941 Damaged Australian merchant ship Allara on 23 July 1942 Sank Australian merchant ship Murada on 24 July 1942 Sank French merchant vessel Cagou on 28 July 1942 Sank RMS Dranker on 03 August 1942 Sank USS Liscome Bay on 24 November 1943 |
Sunk by USS Nicholas northeast of Wotje Atoll on 17 February 1944 |
I-176 in 1942 |
|
Class overview | |
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Built: | 1939-1943 |
In commission: | 1942-1944 |
Planned: | 10 |
Lost: | 10 |
General characteristics | |
Displacement: | 1,630 long tons (1,656 t) surfaced 2,602 long tons (2,644 t) submerged |
Length: | 105.50 m (346 ft 2 in) |
Beam: | 8.25 m (27 ft 1 in) |
Draft: | 4.60 m (15 ft 1 in) |
Propulsion: | 2 × Kampon Mk 1B Model 8 diesels, 2 shafts, 8,000 bhp 1,800 shp |
Speed: | 23.1 kn (42.8 km/h) surfaced 8.0 kn (14.8 km/h) submerged |
Range: |
8,000 nmi (15,000 km) at 16 kn (30 km/h) surfaced |
Test depth: | 80 m (260 ft) |
Complement: | 86 |
Armament: | • 6 × 533 mm (21 in) TTs (6 × bow) • 12 × Type 95 torpedoes • 1 × 120 mm (4.7 in) L/40 11th Year Type Naval gun • 2 × Type 96 25mm AA guns |
Notes: | 354.7 tons fuel |
Project number S41. The final design in the Kaidai class, ten Kaidai VIIs were ordered in 1939 (I-176 I-185), and were completed over the course of 1942 and 1943.[8] They were built in 1939 under the Maru 4 Programme. The IJN called New Kaidai (新海大型 Shin Kaidai-gata ) unofficially, and intended to replace this type with Kaidai III and Kaidai IV. Instead of possessing some aft-firing torpedo tubes as all other predecessors did, the Kaidai VII's six tubes all faced forward. They had an endurance of 75 days.[9]
Seven of the ten Kaidai VIIs were sunk within their first year of operation and all ten vessels were sunk by October 1944.[9]
Boat No. | Boat | Builder | Laid down | Launched | Completed | Results | Fate |
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154 | I-176 | Kure Naval Arsenal | 22-06-1940 | 07-06-1941 | 04-08-1942 | Damaged USS Chester on 20-10-1942 Sank USS Corvina on 17-11-1943 |
Sunk by USS Franks and USS Haggard northwest of Buka Island on 17-05-1944. |
155 | I-177 | Kawasaki, Kōbe Shipyard | 10-03-1941 | 20-12-1941 | 28-12-1942 | Sank RMS Limerick on 26-04-1943 Sank AHS Centaur on 14-05-1943 |
Sunk by USS Steele and USS Samuel S. Miles northwest of Palau on 03-10-1944 |
156 | I-178 | Mitsubishi, Kōbe Shipyard | 21-05-1941 | 24-02-1942 | 26-12-1942 | Sank USS Lydia M. Chillds on 27-04-1943 | Sunk by RAAF topedo bomber on 04-08-1943 |
157 | I-179 | Kawasaki, Kōbe Shipyard | 21-08-1941 | 16-07-1942 | 08-06-1943 | Lost in an accident at Iyo Nada on 09-07-1943 | |
158 | I-180 | Yokosuka Naval Arsenal | 17-04-1941 | 07-02-1942 | 15-01-1943 | Sank Australian merchant ship Wollongbar on 29-04-1943 Sank Norwegian merchant ship Fingal 05-05-1943 Damaged Australian merchant vessel Ormiston on 12-05-1943 Damaged Australian merchant-man Caradale on 12-05-1943 |
Sunk by USS Gilmore at Dutch Harbor on 27-04-1944 |
159 | I-181 | Kure Naval Arsenal | 11-11-1941 | 02-05-1942 | 25-05-1943 | (1). Sunk by USN destroyer and patrol torpedo boat in New Guinea on 16-01-1944 (2). Sunk by USN carrier aircraft in the Saint George's Channel on 16-01-1944 |
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160 | I-182 | Yokosuka Naval Arsenal | 10-11-1941 | 20-05-1942 | 10-05-1943 | (1). Sunk by USS Wadsworth at Espiritu Santo on 01-09-1943 (2). Sunk by USS Ellet in the New Hebrides on 03-09-1943 |
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161 | I-183 | Kawasaki, Kōbe Shipyard | 26-12-1941 | 21-01-1943 | 03-10-1943 | Sunk by USS Pogy south of Shikoku on 28-04-1944 | |
162 | I-184 | Yokosuka Naval Arsenal | 01-04-1942 | 12-12-1942 | 15-10-1943 | Sunk by aircraft from USS Suwannee southeast of Saipan on 19-06-1944 | |
163 | I-185 | Yokosuka Naval Arsenal | 02-09-1942 | 16-09-1942 | 23-09-1943 | Sunk by USS Newcomb and USS Chandler northwest of Saipan on 22-06-1944 |
Type | Kaidai I (I-51) | Kaidai II (I-152) | Kaidai IIIa (I-153) | Kaidai IIIb (I-156) | Kaidai IV (I-61) | |
Displacement | Surfaced | 1,390 long tons (1,412 t) | 1,390 long tons (1,412 t) | 1,635 long tons (1,661 t) | 1,635 long tons (1,661 t) | 1,575 long tons (1,600 t) |
Submerged | 2,430 long tons (2,469 t) | 2,500 long tons (2,540 t) | 2,300 long tons (2,337 t) | 2,300 long tons (2,337 t) | 2,300 long tons (2,337 t) | |
Length (overall) | 91.44 m (300 ft 0 in) | 100.85 m (330 ft 10 in) | 100.58 m (330 ft 0 in) | 101.00 m (331 ft 4 in) | 97.70 m (320 ft 6 in) | |
Beam | 8.81 m (28 ft 11 in) | 7.64 m (25 ft 1 in) | 7.98 m (26 ft 2 in) | 7.90 m (25 ft 11 in) | 7.80 m (25 ft 7 in) | |
Draft | 4.60 m (15 ft 1 in) | 5.14 m (16 ft 10 in) | 4.83 m (15 ft 10 in) | 4.90 m (16 ft 1 in) | 4.83 m (15 ft 10 in) | |
Depth | 6.02 m (19 ft 9 in) | 6.71 m (22 ft 0 in) | 6.71 m (22 ft 0 in) | 6.70 m (22 ft 0 in) | 6.70 m (22 ft 0 in) | |
Power plant and shaft | 4 × Sulzer Mk.2 diesels 4 shafts |
2 × Sulzer Mk 3 diesels 2 shafts |
2 × Sulzer Mk 3 diesels 2 shafts |
2 × Sulzer Mk 3 diesels 2 shafts |
2 × Rauschenbach Mk 2 diesels 2 shafts |
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Power | Surfaced | 5,200 bhp | 6,800 bhp | 6,800 bhp | 6,800 bhp | 6,000 bhp |
Submerged | 2,000 shp | 1,800 shp | 1,800 shp | 1,800 shp | 1,800 shp | |
Speed | Surfaced | 18.4 knots (34.1 km/h) | 20.1 knots (37.2 km/h) | 20.0 knots (37.0 km/h) | 20.0 knots (37.0 km/h) | 20.0 knots (37.0 km/h) |
Submerged | 8.4 knots (15.6 km/h) | 7.7 knots (14.3 km/h) | 8.0 knots (14.8 km/h) | 8.0 knots (14.8 km/h) | 8.5 knots (15.7 km/h) | |
Range | Surfaced | 20,000 nmi (37,000 km) at 10 knots (19 km/h) | 10,000 nmi (19,000 km) at 10 knots (19 km/h) | 10,000 nmi (19,000 km) at 10 knots (19 km/h) | 10,000 nmi (19,000 km) at 10 knots (19 km/h) | 10,000 nmi (19,000 km) at 10 knots (19 km/h) |
Submerged | 100 nmi (190 km) at 4 knots (7.4 km/h) | 100 nmi (190 km) at 4 knots (7.4 km/h) | 90 nmi (170 km) at 3 knots (5.6 km/h) | 60 nmi (110 km) at 3 knots (5.6 km/h) | 60 nmi (110 km) at 3 knots (5.6 km/h) | |
Test depth | 45.7 m (150 ft) | 45.7 m (150 ft) | 60.0 m (196.9 ft) | 60.0 m (196.9 ft) | 60.0 m (196.9 ft) | |
Fuel | 508 tons | 284.5 tons | 241.8 tons | 230 tons | 230 tons | |
Complement | 70 | 58 | 63 | 63 | 58 | |
Armament (initial) | • 8 × 533 mm (21 in) TTs (6 × bow, 2 × aft) • 24 × 6th Year Type torpedoes • 1 × 120 mm (4.7 in) L/45 3rd Year Type Naval gun |
• 8 × 533 mm (21 in) TTs (6 × bow, 2 × aft) • 16 × 6th Year Type torpedoes • 1 × 120 mm (4.7 in) L/45 3rd Year Type Naval gun • 1 × 76.2 mm (3.00 in) L/23.5 AA gun |
• 8 × 533 mm (21 in) TTs (6 × bow, 2 × aft) • 16 × 6th Year Type torpedoes • 1 × 120 mm (4.7 in) L/40 11th Year Type Naval gun • 1 × 7.7 mm MG |
same as Kaidai IIIa | • 6 × 533 mm (21 in) TTs (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 120 mm (4.7 in) L/40 11th Year Type Naval gun • 1 × 7.7 mm MG |
Type | Kaidai V (I-165) | Kaidai VIa (Early production, I-168) | Kaidai VIa (Late production, I-171) | Kaidai VIb (I-174) | |
Displacement | Surfaced | 1,575 long tons (1,600 t) | 1,400 long tons (1,422 t) | same as Early Production | 1,420 long tons (1,443 t) |
Submerged | 2,330 long tons (2,367 t) | 2,440 long tons (2,479 t) | 2,564 long tons (2,605 t) | ||
Length (overall) | 97.70 m (320 ft 6 in) | 104.70 m (343 ft 6 in) | 105.00 m (344 ft 6 in) | ||
Beam | 8.20 m (26 ft 11 in) | 8.20 m (26 ft 11 in) | 8.20 m (26 ft 11 in) | ||
Draft | 4.70 m (15 ft 5 in) | 4.58 m (15 ft 0 in) | 4.60 m (15 ft 1 in) | ||
Depth | 7.05 m (23 ft 2 in) | 7.00 m (23 ft 0 in) | 7.00 m (23 ft 0 in) | ||
Power plant and shaft | 2 × Sulzer Mk.3 diesels 2 shafts |
2 × Kampon Mk.1A Model 8 diesels, 2 shafts | 2 × Kampon Mk 1A Model 8 diesels, 2 shafts | ||
Power | Surfaced | 6,000 bhp | 9,000 bhp | 9,000 bhp | |
Submerged | 1,800 shp | 1,800 shp | 1,800 shp | ||
Speed | Surfaced | 20.5 knots (38.0 km/h) | 23.0 knots (42.6 km/h) | 23.0 knots (42.6 km/h) | |
Submerged | 8.2 knots (15.2 km/h) | 8.2 knots (15.2 km/h) | 8.2 knots (15.2 km/h) | ||
Range | Surfaced | 10,000 nmi (19,000 km) at 10 knots (19 km/h) | 14,000 nmi (26,000 km) at 10 knots (19 km/h) | 10,000 nmi (19,000 km) at 16 knots (30 km/h) | |
Submerged | 60 nmi (110 km) at 3 knots (5.6 km/h) | 65 nmi (120 km) at 3 knots (5.6 km/h) | 90 nmi (170 km) at 3 knots (5.6 km/h) | ||
Test depth | 75.0 m (246.1 ft) | 70.0 m (229.7 ft) | 85.0 m (278.9 ft) | ||
Fuel | 230 tons | 341 tons | 442 tons | ||
Complement | 62 | 68 | 68 | ||
Armament (initial) | • 6 × 533 mm (21 in) TTs (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 100 mm (3.9 in) L/50 Type 88 AA gun • 1 × 12.7 mm AA gun • 1 × 7.7 mm MG |
• 6 × 533 mm (21 in) TTs (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 100 mm (3.9 in) L/50 Type 88 AA gun • 1 × 13.2 mm AA gun • 1 × 7.7 mm MG |
• 6 × 533 mm (21 in) TTs (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 120 mm (4.7 in) L/40 11th Year Type Naval gun • 1 × 13.2 mm AA gun • 1 × 7.7 mm MG |
• 6 × 533 mm (21 in) TTs (4 × bow, 2 × aft) • 14 × Type 89 torpedoes • 1 × 120 mm (4.7 in) L/40 11th Year Type Naval gun • 1 × 13.2 mm AA gun |
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