The submarines of the K6 sub-class were versions of the preceding K5 sub-class with greater range and diving depth.[1] They displaced 1,133 tonnes (1,115 long tons) surfaced and 1,470 tonnes (1,447 long tons) submerged. The submarines were 80.5 meters (264 ft 1 in) long, had a beam of 7 meters (23 ft 0 in) and a draft of 4.07 meters (13 ft 4 in). They had a diving depth of 80 meters (260 ft).[2]
For surface running, the boats were powered by two 2,100-brake-horsepower (1,566 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 600-horsepower (447 kW) electric motor.[3] They could reach 19.75 knots (36.58 km/h; 22.73 mph) on the surface and 8 knots (15 km/h; 9.2 mph) underwater. On the surface, the K6s had a range of 11,000 nautical miles (20,000 km; 13,000 mi) at 12 knots (22 km/h; 14 mph); submerged, they had a range of 45 nmi (83 km; 52 mi) at 5 knots (9.3 km/h; 5.8 mph).[1]
Ro-35 was laid down on 9 October 1941 by Mitsubishi at Kobe, Japan, as the lead unit of the K6 subclass with the name Submarine No. 201. Renamed Ro-35, she was launched on 4 June 1942 and provisionally attached to the Maizuru Naval District that day. She was completed and commissioned on 25 March 1943.[4]
Service historyedit
Upon commissioning, Ro-35 was attached formally to the Maizuru Naval District, and on 1 April 1943 she was assigned to Submarine Squadron 11 for workups.[4]
On 17 July 1943, Ro-35 departed Kure, Japan, bound for Truk. During her voyage, she was reassigned to the 1st Submarine Unit in the 6th Fleet on 20 July 1943. She arrived at Truk in early August 1943.[4]
Ro-35 got underway from Truk on 16 August 1943 to begin her first war patrol, ordered to conduct a reconnaissance of the Espiritu Santo area in the New Hebrides. At 17:00 on 25 August 1943, she transmitted a message in which she reported having sighted an Alliedconvoy of six transports. The Japanese never heard from her again.[4]
At 19:12 on 25 August 1943, the United States NavydestroyerUSS Patterson(DD-392) was escorting a convoy bound from the New Hebrides to the southeastern Solomon Islands when she made radar contact on a vessel east of the Solomons, 170 nautical miles (310 km; 200 mi) from Ndeni in the Santa Cruz Islands. As Patterson closed the range, the contact disappeared from radar at 4,000 yards (3,700 m), indicating that it was a diving submarine. Patterson acquired sonar contact on the submarine at a range of 3,800 yards (3,500 m) and soon began to attack it with depth charges. At 21:53, Patterson′s crew heard a deep underwater explosion, indicating the sinking of the submarine at 12°57′S164°23′E / 12.950°S 164.383°E / -12.950; 164.383 (Ro-35).[4]
Although the Japanese submarine I-25 was in the same area at the time, the submarine that Patterson sank was probably Ro-35. The headquarters of the 6th Fleet attempted to contact Ro-35 on 8 September 1943, but she did not reply. On 2 October 1943, the Imperial Japanese Navy declared Ro-35 to be presumed lost with all 66 hands off Espiritu Santo. She was stricken from the Navy list on 1 December 1943.[4]
Hashimoto, Mochitsura (1954). Sunk: The Story of the Japanese Submarine Fleet 1942 – 1945. Colegrave, E.H.M. (translator). London: Cassell and Company. ASIN B000QSM3L0.
October 27, 2023
japanese, submarine, imperial, japanese, navy, kaichū, type, submarine, lead, unit, class, completed, commissioned, march, 1943, served, world, sunk, during, first, patrol, august, 1943, historyjapannamesubmarine, 201buildermitsubishi, kobe, japanlaid, down9, . Ro 35 was an Imperial Japanese Navy Kaichu type submarine the lead unit of the K6 sub class Completed and commissioned in March 1943 she served in World War II and was sunk during her first war patrol in August 1943 HistoryJapanNameSubmarine No 201BuilderMitsubishi Kobe JapanLaid down9 October 1941RenamedRo 35Launched4 June 1942Completed25 March 1943Commissioned25 March 1943FateMissing after 25 August 1943 Probably sunk 25 August 1943Stricken1 December 1943General characteristicsClass and typeKaichu type submarine K6 subclass Displacement1 133 tonnes 1 115 long tons surfaced 1 470 tonnes 1 447 long tons submergedLength80 5 m 264 ft 1 in overallBeam7 m 23 ft 0 in Draft4 07 m 13 ft 4 in Installed power4 200 bhp 3 100 kW diesel 1 200 hp 890 kW electric motor PropulsionDiesel electric 2 diesel engine one per propeller shaft 2 electric motor one per propeller shaft Speed19 75 knots 36 58 km h 22 73 mph surfaced 8 knots 15 km h 9 2 mph submergedRange11 000 nmi 20 000 km 13 000 mi at 12 knots 22 km h 14 mph surfaced 45 nmi 83 km 52 mi at 5 knots 9 3 km h 5 8 mph submergedTest depth80 m 260 ft Crew61Armament4 bow 533 mm 21 in torpedo tubes 1 76 2 mm 3 00 in L 40 anti aircraft gun 2 single 25 mm 1 0 in AA guns Contents 1 Design and description 2 Construction and commissioning 3 Service history 4 Notes 5 References 6 Further readingDesign and description editThe submarines of the K6 sub class were versions of the preceding K5 sub class with greater range and diving depth 1 They displaced 1 133 tonnes 1 115 long tons surfaced and 1 470 tonnes 1 447 long tons submerged The submarines were 80 5 meters 264 ft 1 in long had a beam of 7 meters 23 ft 0 in and a draft of 4 07 meters 13 ft 4 in They had a diving depth of 80 meters 260 ft 2 For surface running the boats were powered by two 2 100 brake horsepower 1 566 kW diesel engines each driving one propeller shaft When submerged each propeller was driven by a 600 horsepower 447 kW electric motor 3 They could reach 19 75 knots 36 58 km h 22 73 mph on the surface and 8 knots 15 km h 9 2 mph underwater On the surface the K6s had a range of 11 000 nautical miles 20 000 km 13 000 mi at 12 knots 22 km h 14 mph submerged they had a range of 45 nmi 83 km 52 mi at 5 knots 9 3 km h 5 8 mph 1 The boats were armed with four internal bow 53 3 cm 21 0 in torpedo tubes and carried a total of ten torpedoes They were also armed with a single 76 2 mm 3 00 in L 40 anti aircraft gun and two single 25 mm 1 0 in AA guns 1 Construction and commissioning editRo 35 was laid down on 9 October 1941 by Mitsubishi at Kobe Japan as the lead unit of the K6 subclass with the name Submarine No 201 Renamed Ro 35 she was launched on 4 June 1942 and provisionally attached to the Maizuru Naval District that day She was completed and commissioned on 25 March 1943 4 Service history editUpon commissioning Ro 35 was attached formally to the Maizuru Naval District and on 1 April 1943 she was assigned to Submarine Squadron 11 for workups 4 On 17 July 1943 Ro 35 departed Kure Japan bound for Truk During her voyage she was reassigned to the 1st Submarine Unit in the 6th Fleet on 20 July 1943 She arrived at Truk in early August 1943 4 Ro 35 got underway from Truk on 16 August 1943 to begin her first war patrol ordered to conduct a reconnaissance of the Espiritu Santo area in the New Hebrides At 17 00 on 25 August 1943 she transmitted a message in which she reported having sighted an Allied convoy of six transports The Japanese never heard from her again 4 At 19 12 on 25 August 1943 the United States Navy destroyer USS Patterson DD 392 was escorting a convoy bound from the New Hebrides to the southeastern Solomon Islands when she made radar contact on a vessel east of the Solomons 170 nautical miles 310 km 200 mi from Ndeni in the Santa Cruz Islands As Patterson closed the range the contact disappeared from radar at 4 000 yards 3 700 m indicating that it was a diving submarine Patterson acquired sonar contact on the submarine at a range of 3 800 yards 3 500 m and soon began to attack it with depth charges At 21 53 Patterson s crew heard a deep underwater explosion indicating the sinking of the submarine at 12 57 S 164 23 E 12 950 S 164 383 E 12 950 164 383 Ro 35 4 Although the Japanese submarine I 25 was in the same area at the time the submarine that Patterson sank was probably Ro 35 The headquarters of the 6th Fleet attempted to contact Ro 35 on 8 September 1943 but she did not reply On 2 October 1943 the Imperial Japanese Navy declared Ro 35 to be presumed lost with all 66 hands off Espiritu Santo She was stricken from the Navy list on 1 December 1943 4 In June 1944 Fleet Radio Unit Melbourne FRUMEL an Allied signals intelligence unit headquartered at Melbourne Australia reported that a Japanese submarine it identified as Ro 35 was making a supply voyage from Truk to Kusaie However FRUMEL probably confused Ro 35 with Ro 41 4 Notes edit a b c Carpenter amp Dorr p 124 Bagnasco p 187 Chesneau p 203 a b c d e f g Hackett Bob Kingsepp Sander 2017 IJN Submarine RO 35 Tabular Record of Movement combinedfleet com Retrieved 20 September 2020 References editBagnasco Erminio 1977 Submarines of World War Two Annapolis Maryland Naval Institute Press ISBN 0 87021 962 6 Carpenter Dorr B amp Polmar Norman 1986 Submarines of the Imperial Japanese Navy 1904 1945 London Conway Maritime Press ISBN 0 85177 396 6 Chesneau Roger ed 1980 Conway s All the World s Fighting Ships 1922 1946 Greenwich UK Conway Maritime Press ISBN 0 85177 146 7 Further reading editHackett Bob Sander Kingsepp 2003 Kaichu Type Sensuikan Combinedfleet com Retrieved 20 September 2020 Hashimoto Mochitsura 1954 Sunk The Story of the Japanese Submarine Fleet 1942 1945 Colegrave E H M translator London Cassell and Company ASIN B000QSM3L0 Retrieved from https en wikipedia org w index php title Japanese submarine Ro 35 amp oldid 1165600150, wikipedia, wiki, book, books, library,
