| History | |
|---|---|
 Japan | |
| Name | Submarine No. 62 |
| Builder | Sasebo Naval Arsenal,Sasebo, Japan |
| Laid down | 10 November 1921 |
| Launched | 13 April 1922 |
| Completed | 30 November 1923 |
| Commissioned | 30 November 1923 |
| Renamed | Ro-28 on 1 November 1924 |
| Decommissioned | 1 December 1938 |
| Recommissioned | 1 May 1939 |
| Decommissioned | 1 April 1940 |
| Stricken | 1 April 1940 |
| Renamed | Heisan No. 8 on 1 April 1940 |
| Fate |
|
| General characteristics | |
| Class & type | Kaichū type submarine (K4 subclass) |
| Displacement |
|
| Length | 74.22 m (243 ft 6 in) overall |
| Beam | 6.12 m (20 ft 1 in) |
| Draft | 3.73 m (12 ft 3 in) |
| Installed power |
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| Propulsion |
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| Speed |
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| Range |
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| Test depth | 45.7 m (150 ft) |
| Crew | 46 |
| Armament |
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Ro-28, originally namedSubmarine No. 46, was anImperial Japanese NavyKaichū-Typesubmarine of theKaichū IV subclass. She was in commission from 1923 to 1938 and from 1939 to 1940.
The submarines of theKaichu IV sub-class were an improved version of the precedingKaichu III subclass, slightly larger, with heaviertorpedoes, and with the deck gun mounted forward of theconning tower instead of aft of it.[1] Theydisplaced 762 tonnes (750 long tons) surfaced and 1,097 tonnes (1,080 long tons) submerged. The submarines were 74.22 meters (243 ft 6 in) long and had abeam of 6.12 meters (20 ft 1 in) and adraft of 3.73 meters (12 ft 3 in). They had a diving depth of 45.7 meters (150 ft).
For surface running, the submarines were powered by two 1,450-brake-horsepower (1,081 kW)Sulzer Mark IIdiesel engines, each driving onepropeller shaft. When submerged each propeller was driven by a 600-horsepower (447 kW)electric motor. They could reach 16knots (30 km/h; 18 mph) on the surface and 8.5 knots (15.7 km/h; 9.8 mph) underwater. On the surface, they had a range of 6,000nautical miles (11,000 km; 6,900 mi) at 10 knots (19 km/h; 12 mph); submerged, they had a range of 85 nmi (157 km; 98 mi) at 4 knots (7.4 km/h; 4.6 mph).
The submarines were armed with four internal bow 533 mm (21.0 in)torpedo tubes and carried a total of eighttorpedoes. They were also armed with a single76.2 mm (3.00 in) deck gun.
Ro-28 waslaid down asSubmarine No. 62 on 10 November 1921 by theYokosuka Naval Arsenal atYokosuka,Japan.[2]Launched on 13 April 1922,[2] she was completed andcommissioned on 30 November 1923.[2]
Upon commissioning,Submarine No. 62 was attached to theKure Naval District,[2] and on 15 December 1923 she was assigned to Submarine Division 14 and theKure Defense Division.[2] On 20 August 1924, Submarine Division 14 was assigned to SubmarineSquadron 2 in the2nd Fleet.[2] On 14 June 1924,Submarine No. 62 collided with thebattlecruiserKongō while conducting a practice attack.[3]
On 1 November 1924,Submarine No. 62 was renamedRo-28.[2] Submarine Division 14 was reassigned to the Kure Naval District on 1 August 1925,[4] and on 18 August 1925 began duty with the Kure Defense Division.[2] This lasted until 1 December 1925, when the division returned to Submarine Squadron 2 in the 2nd Fleet.[2] On 6 April 1926,Ro-28 collided with hersister shipRo-27.[3] Neither submarine suffered casualties.[3]
On 1 December 1926, Submarine Division 14 was reassigned to the Kure Naval District.[2]Ro-28 was assigned directly to the Kure Naval District on 15 January 1927, returned to Submarine Division 14 on 1 September 1927, and had duty in theKure Defense Division from 10 December 1928 to 30 November 1929, when she again was assigned directly to the Kure Naval District.[2]
Ro-28 again returned to Submarine Division 14 on 1 December 1931, and remained in it for the remainder of her active career.[2] In the years that followed, she served in the Kure Defense Division from 1 October 1932 to 1 February 1933 and from 1 December 1933 to 15 November 1934[2] and underwent a refit in 1934.[2] She sank in an accidental flooding incident in the harbor atWajima, Japan, in 1935, but was refloated, repaired, and returned to service.[2]
Ro-28 wasdecommissioned on 1 December 1938 and placed in Fourth Reserve in the Kure Naval District.[2] She was recommissioned on 1 May 1939 and assigned directly to the Kure Naval District.[2]
Ro-28 was decommissioned and stricken from the Navy list on 1 April 1940.[2] She served subsequently as thetraininghulkHeisan No. 8 at the submarine school atKure, Japan.[2] She was sold for scrap afterWorld War II and scrapped atKumagaya Gumi, Japan.[1][2] Scrapping was completed in May 1948.[1][2]
Shipwrecks and maritime incidents in 1924 | |
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| Shipwrecks |
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| Other incidents |
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Shipwrecks and maritime incidents in 1926 | |
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| Shipwrecks |
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| Other incidents |
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Shipwrecks and maritime incidents in 1935 | |
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| Shipwrecks |
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| Other incidents |
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