Junsen type submarine
| Class overview | |
|---|---|
| Name | Junsen type submarines |
| Builders | |
| Operators |  Imperial Japanese Navy |
| Succeeded by | |
| Subclasses |
|
| Built | 1923-1938 |
| In commission | 1926-1945 |
The Junsen type submarine (巡潜型潜水艦, "巡洋潜水艦", Junsen-gata sensuikan, "J3.
Class variants
The Junsen type submarines were divided into four classes:
- Junsen I (巡潜一型（伊一型）, Junsen 1-gata, I-1-class)
- Junsen I Mod. (巡潜一型改（伊五型）, Junsen 1-gata Kai, I-5-class)
- Junsen II (巡潜二型（伊六型）, Junsen 2-gata, I-6-class)
- Junsen III (巡潜三型（伊七型）, Junsen 3-gata, I-7-class).
Junsen I (I-1 class)
Four boats were built in 1923-1929. Genealogy of the large-size submarine in the IJN began with
Kaidai II
and U-142 become Junsen I.
| Boat | Builder | Laid down | Launched | Completed | Results | Fate |
| I-1 [1] | Kawasaki Shipbuilding | 12-03-1923 | 15-10-1924 | 10-03-1926 | Damaged USS Hulbert 31-12-1941 Sank Dutch merchant ship Siantar 03-03-1942 |
Sunk by HMNZS Moa and HMNZS Kiwi at Guadalcanal 29-01-1943. |
| I-2 | Kawasaki Shipbuilding | 06-08-1923 | 23-02-1925 | 24-07-1926 | Sank Dutch merchant ship Parigi 01-03-1942 Sank RMS Chilka 11-03-1942 |
Sunk by USS Saufley north of Rabaul 02°17′S 149°14′E / 2.283°S 149.233°E 07-04-1944. |
| I-3 | Kawasaki Shipbuilding | 01-11-1924 | 08-06-1925 | 30-11-1926 | Sank RMS Elmdale 07-04-1942 Sank RMS Fultala 08-04-1942 |
Sunk by USS PT-59 at Kamimbo 09-12-1942.
|
| I-4 | Kawasaki Shipbuilding | 17-04-1926 | 22-05-1928 | 24-12-1929 | Sank Norwegian merchant ship Hoegh Merchant 14-12-1941 Sank Dutch merchant ship Ban Ho Guan 28-02-1942 Sank USS Washingtonian 06-04-1942 Damaged unknown sailing boat 10-04-1942 Damaged USS Alhena 27-09-1942 |
Sunk by USS Seadragon southeast of Rabaul 05°02′S 152°33′E / 5.033°S 152.550°E 20-12-1942. |
Junsen I Mod (I-5 class)
This is a type which added a floatplane to the Junsen I.
| Boat | Builder | Laid down | Launched | Completed | Results | Fate |
| I-5 | Kawasaki Shipbuilding | 30-10-1929 | 19-06-1931 | 31-07-1932 | Sunk by USS Wyman east of Saipan 13°01′N 151°58′E / 13.017°N 151.967°E 19-07-1944. |
Junsen II (I-6 class)
Project number S32. This is a type which added a catapult to the Junsen I Mod. She was built in 1931 under the 1st Naval Armaments Supplement Programme (Maru 1).
| Boat | Builder | Laid down | Launched | Completed | Results | Fate |
|---|---|---|---|---|---|---|
| I-6 | Kawasaki-Kōbe Shipyard | 14 October 1932 | 31 March 1934 | 15 May 1935 | Damaged aircraft carrier USS Saratoga 11 January 1942 Sank Clan Line cargo ship SS Clan Ross 2 April 1942 Sank RMS Bahadar 7 April 1942 Sank two unknown sailing boats 10 April 1942 |
Accidentally rammed, attacked and sunk by Toyokawa Maru northeast of Hachijo-Shima on 16 June 1944. |
Junsen III (I-7 class)
Project number S33. These boats combined the good points of the Junsen II and the
Maru 2 Programme
.
Junsen III became a 'typeship' for the Type-C
.
| Boat | Builder | Laid down | Launched | Completed | Results | Fate |
| I-7 | Kure Naval Arsenal | 12 September 1934 | 3 July 1935 | 31 March 1937 | Sank Dutch merchant ship Le Maire 04-03-1942 Sank RMS Glenshiel 03-04-1942 Sank USS Arcata 15-07-1942 |
Damaged by USS Monaghan at Kiska 21 June 1943. Scuttled 5 July 1943. |
| I-8 | Kawasaki-Kōbe Shipyard | 11-10-1934 | 20-07-1936 | 05-12-1938 | Sank Dutch merchant ship Tjisalak 26-03-1944 Sank RMS City of Adelaide 30-03-1944 Sank Australian merchant ship Nellore 29-06-1944 Sank USS Jean Nicolet 02-07-1944 |
Sunk by USS Stockton southeast of Okinawa Island 25°29′N 128°35′E / 25.483°N 128.583°E 31-03-1945. |
Characteristics
| Type | Junsen I (I-1) | Junsen I Mod. (I-5) | Junsen II (I-6) | Junsen III (I-7) | |
| Displacement | Surfaced | 1,970 long tons (2,002 t) | same as Junsen I | 1,900 long tons (1,930 t) | 2,231 long tons (2,267 t) |
| Submerged | 2,791 long tons (2,836 t) | 3,061 long tons (3,110 t) | 3,583 long tons (3,640 t) | ||
| Length (overall) | 97.50 m (319 ft 11 in) | 98.50 m (323 ft 2 in) | 109.30 m (358 ft 7 in) | ||
| Beam | 9.22 m (30 ft 3 in) | 9.06 m (29 ft 9 in) | 9.10 m (29 ft 10 in) | ||
| Draft | 4.94 m (16 ft 2 in) | 5.31 m (17 ft 5 in) | 5.26 m (17 ft 3 in) | ||
| Depth | 7.58 m (24 ft 10 in) | 7.58 m (24 ft 10 in) | 7.70 m (25 ft 3 in) | ||
| Power plant and shaft | 2 × Rauschenbach Mk.2 diesels 2 shafts |
2 × Kampon Mk.1A Model 7 diesels 2 shafts |
2 × Kampon Mk.1A Model 10 diesels 2 shafts | ||
| Power | Surfaced | 6,000 bhp | 8,000 bhp | 11,200 bhp | |
| Submerged | 2,600 shp | 2,600 shp | 2,800 shp | ||
| Speed | Surfaced | 18.8 knots (34.8 km/h) | 20.0 knots (37.0 km/h) | 23.0 knots (42.6 km/h) | |
| Submerged | 8.1 knots (15.0 km/h) | 7.5 knots (13.9 km/h) | 8.0 knots (14.8 km/h) | ||
| Range | Surfaced | 24,400 nmi (45,200 km) at 10 knots (19 km/h) | 20,000 nmi (37,000 km) at 10 knots (19 km/h) | 14,000 nmi (26,000 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) | 80 nmi (150 km) at 3 knots (5.6 km/h) | ||
| Test depth | 75 m (246 ft) | 80 m (260 ft) | 100 m (330 ft) | ||
| Fuel | 545 tons | 580 tons | 580 tons | 800 tons | |
| Complement | 75 | 75 | 80 | 100 | |
| Armament (initial) | • 6 × 533 mm (21 in) torpedo tubes (4 × bow, 2 × aft) • 22 × Type 89 torpedoes • 2 × 140 mm (5.5 in) L/40 11th Year Type Naval guns[2] • 1 × 7.7 mm machine gun |
• 6 × 533 mm (21 in) torpedo tubes (4 × bow, 2 × aft) • 20 × Type 89 torpedoes • 2 × 127 mm (5.0 in) L/40 Type 88 AA guns • 1 × 7.7 mm machine gun |
• 6 × 533 mm (21 in) torpedo tubes (4 × bow, 2 × aft) • 17 × Type 89 torpedoes • 1 × 127 mm (5.0 in) L/40 Type 88 AA gun • 1 × 13.2 mm (0.52 in) AA gun
|
• 6 × 533 mm (21 in) torpedo tubes (6 × bow) • 20 × Type 89 torpedoes • 2 × 140 mm L/40 11th Year Type Naval guns[2] • 2 × 13 mm AA guns | |
| Aircraft and facilities | • Hangar • 1 × Yokosuka E6Y1 |
• Catapult and hangar • 1 × Yokosuka E6Y1 |
• Catapult and hangar • 1 × Watanabe E9W1 Slim | ||
Footnotes
- ^ 伊号第1潜水艦 (I-Gō Dai-1 Sensuikan). The same shall apply hereinafter.
- ^ ISBN 0-87021-459-4p.191
Bibliography
- "Rekishi Gunzō"., History of Pacific War Vol.17 I-Gō Submarines, ISBN 4-05-601767-0
- Rekishi Gunzō, History of Pacific War Extra, "Perfect guide, The submarines of the Imperial Japanese Forces", Gakken (Japan), March 2005, ISBN 4-05-603890-2
- Model Art Extra No.537, Drawings of Imperial Japanese Naval Vessels Part-3, Model Art Co. Ltd. (Japan), May 1999, Book code 08734-5
- The Maru Special, Japanese Naval Vessels No.31 Japanese Submarines I, Ushio Shobō (Japan), September 1979, Book code 68343-31
External links
Wikimedia Commons has media related to Junsen type submarine.