Kasashima-class salvage tugboat

Class overview
Name| 600-ton salvage tugboat
Builders| Harima Zōsen Corporation
Operators|  Imperial Japanese Navy
Preceded by| Tategami class
Succeeded by| Miura class
Built| 1937-1939
In commission| 1938-1947 (?) [1]
Planned| 2
Completed| 2
Lost| 1
Retired| 1
General characteristics Kasashima class
Type| Salvage tugboat
Displacement| 600 long tons (610 t) [2]
Length| 40.0 m (131 ft 3 in) [2]
Beam| 8.8 m (28 ft 10 in) [2]
Draft| 4.3 m (14 ft 1 in) [2]
Propulsion|

* 2 × reciprocating engines,[2]
* 2 × Kampon water tube boilers,[2]
* 2 shafts,
* Kasashima
* 2,033 ihp[2]
* Futakami
* 2,249 ihp [2]

Speed|

* Kasashima
* 14.14 knots (16.27 mph; 26.19 km/h) [2]
* Futakami
* 14.54 knots (16.73 mph; 26.93 km/h) [2]

Endurance| Fuel: Oil[3] and coal (?)

The Kasashima-class salvage tugboats (笠島型救難船兼曳船,, Kasashima-gata Kyūnansen-ken-eisen) were a class of rescue ship / tugboat of the Imperial Japanese Navy (IJN), serving during World War II. The IJN official designation for this class was 600-ton salvage tugboat (六〇〇瓲救難船兼曳船,, 600-ton Kyūnansen-ken-eisen) for all vessels.

## Background

[edit]

Under the Russo-Japanese War, the IJN purchased many steamships and converted them to salvage vessels. However, when they entered in 1930s, deterioration became remarkable. The IJN initially planned for the Tategami class to succeed them. The IJN was going to build the Tategami class one by one for three years from fiscal year 1936. However, the plan came to an impasse due to budget shortages by the second year. The IJN postponed building of the second ship for two years, and built two cheap 600-ton ships instead: the Hashima (later renamed Kasashima) and Futakami.[4]

## Ships in class

[edit]

Ship | Builder | Laid down | Launched | Completed | Fate

|
|
|
|
|

Kasashima (笠島)
ex-Hashima (波島) | Harima Zōsen  | 15 December 1937  | 8 March 1938  | 27 May 1938 as Hashima | Renamed Kasashima on 25 October 1940;[5] sunk by aircraft off Taipei 26°22′N 120°56′E﻿ / ﻿26.367°N 120.933°E﻿ / 26.367; 120.933 on 25 January 1944.[6]
Futakami (二神) | Harima Zōsen  | 21 October 1938  | 27 March 1939  | 30 April 1939  | Survived war in Truk; decommissioned on 3 May 1947 (?);[1] later scuttled off Tonowas.

## Footnotes

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1. ^ a b Ships of the world (1995), p. 403
2. ^ a b c d e f g h i j Harima Zōsen (1960), pp. 456-457
3. ^ JACAR C05110821000, p. 2
4. ^ Editorial Committee of the Navy, p. 191
5. ^ Cable layer Hatsushima was renamed Hashima on 25 October 1940, therefore, salvage tugboat Hashima was renamed Kasashima. The Maru Special (1981), p. 50
6. ^ Shinshichirō Komamiya, p. 129

## Bibliography

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* The Maru Special, Japanese Naval Vessels No.47, "Japanese naval mine warfare crafts", "Ushio Shobō". (Japan), January 1981.
* Editorial Committee of the Navy, Navy Vol. 11, "Part of small vessels, auxiliary vessels, miscellaneous service ship and converted merchant ships", Seibunsha K.K. (Japan), August 1981.
* 50 year History of Harima Zōsen, Harima Zōsen Corporation, November 1960.
* Shinshichirō Komamiya, The Wartime Convoy Histories, "Shuppan Kyōdōsha". Archived from the original on 2011-07-22. Retrieved 2011-12-15. (Japan), October 1987.
* "Japan Center for Asian Historical Records (JACAR)"., National Archives of Japan
* Reference code: C05110820900, [Data in English is under preparation] 第４８９０号 １２．９．２２ ６００屯救難船兼曳船缶用管間邪魔板製造の件.
* Reference code: C05110821000, [Data in English is under preparation] 第４８９１号 １２．９．２２ ６００屯救難船兼曳船缶用重油噴燃器及コ-ン製造の件.
* Monthly Ships of the World No. 500, Ships of the Imperial Japanese Navy", "Kaijinsha"., (Japan), August 1995.

* v
* t
* e

Japanese auxiliary ship classes of World War II

Colliers and oilers|

* Notoro
* Ondo
* Sunosaki
* Ashizuri
* KazahayaS
* HayasuiS
* HarioS
* Muroto
* Teiyō MaruS
* Ōse (ex-SS Genota)SC

Food supply ships|

* MamiyaS
* NosakiS
* Kinesaki
* IrakoS
* KurasakiSC

Landing ships|

* No.1
* No.101
* Shinshū MaruS (Army)
* SS (Army)

Armed merchant cruisers|

* Aikoku MaruS
* Hōkoku MaruS
* Kongō MaruS
* Noshiro MaruS

Minelayers
and cable layer|

* TokiwaSC
* ItsukushimaS
* YaeyamaS
* OkinoshimaS
* TsugaruS
* MinooSC
* ShiratakaS
* Hatsutaka
* Tsubame
* Natsushima (1933)
* Sokuten (1938)
* Hirashima
* AjiroS
* Kamishima
* Hashima
* Sokuten (1913)
* Aux. No.1
* Aux. No.101 (ex-HMS Barlight)SC

Minesweepers|

* No.1 (1923)
* No.5 (1928)
* No.13
* No.17
* No.7 (1938)
* No.19
* No.101 (ex-HMS Taitam and HMS Waglan)C
* Aux. No.1
* Aux. No.101 (ex-HNLMS DEFG-class)
* Aux. No.104 (ex-HNLMS DEFG-class)

Patrol boats|

* No.1C
* No.31C
* No.46SC
* No.101 (ex-HMS Thracian)SC
* No.102 (ex-USS Stewart)SC
* No.103 (ex-USS Finch)SC
* No.104 (ex-Dutch East Indies Valk and Arend)C
* No.105 (ex-Philippine customs Arayat)SC
* No.106 (ex-HNLMS Banckert (1929))SCI
* No.107 (ex-USS Genesee)SC
* No.109 (ex-Dutch East Indies Fazant)SC
* Aux. No.1

Repair ships|

* AsahiSC
* AkashiS
* Hayase (ex-Chinese passenger Chin Kiang)SC
* Hitonose (ex-ROCN Min Sheng)SC

Seaplane tenders|

* NotoroSC
* KamoiSC
* Chitose
* MizuhoS
* NisshinS
* AkitsushimaS
* Kamikawa MaruC

Submarine chasers|

* No.1
* No.3S
* No.4
* No.13
* No.28
* No.60
* Aux. No.1
* Aux. No.101 (ex-HNLMS Tjerimai)SC
* Aux. No.102 (ex-HNLMS Ardjoeno class)C
* Aux. No.103 (ex-HNLMS B1 class)C
* Aux. No.111 (ex-HNLMS P13 or P14)SC
* Aux. No.112 (ex-HNLMS A)C
* Aux. No.117 (ex-HNLMS Bantam)C
* Aux. No.251
* Aux. No.253S

Submarine tenders|

* KomahashiSC
* Jingei
* TaigeiS

Survey ships|

* TsukushiS
* KatsurikiSC
* Hakusa (ex-China customs Fu Hsing)SC

Target ships|

* SettsuSC
* YakazeSC
* HakachiS
* ŌhamaS

Training ships|

* FujiSC
* ShikishimaSC
* AsamaSC
* AzumaSC
* KasugaSC
* Atada (ex-ROCN Yat Sen)SC

Others|

* Sōya (freighter)SC
* Kashino (turret transporter)S
* Ōtomari (icebreaker)S
* Tategami (salvage tug)
* Kasashima (salvage tug)
* Miura (salvage tug)
* Kaiyō No.1 (oceanographic research ship)
* Asuka (traffic ship, ex-ROCN Yung Chien)SC

Single ship of class

Converted to ship type

Incomplete until the end of war
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