NAVYPEDIA

Photo

Shonan 7.1944

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate	Modification
鵜来 [Ukuru], 1955- さつま [Satsuma]	PL104		Tsurumi, Yokohama	10/1943	15.5.1944	7.1944	surrendered 8.1945, JMSDF 5.1948, stricken 1966	Ukuru group
日振 [Hiburi]			Hitachi, Sakurajima	1.1944	10.4.1944	6.1944	sunk 22.8.1944	Ukuru group
昭南 [Shonan]			Hitachi, Sakurajima	2.1944	19.5.1944	7.1944	sunk 25.2.1945	Ukuru group
大東 [Daito]			Hitachi, Sakurajima	2.1944	24.6.1944	8.1944	surrendered 8.1945, sunk 16.11.1945	Ukuru group
沖縄 [Okinawa]			Tsurumi, Yokohama	12.1943	19.6.1944	8.1944	sunk 30.7.1945	Ukuru group
久米 [Kume]			Hitachi, Sakurajima	5.1944	15.8.1944	9.1944	sunk 28.1.1945	Ukuru group
生名 [Ikuna], 1955- おきざ [Okija]	PL102		Hitachi, Sakurajima	6.1944	4.9.1944	10.1944	surrendered 8.1945, JMSDF 5.1948, stricken 1963	Ukuru group
新南 [Shinnan], 1955- つがる [Tsugaru]	PL105		Uraga, Tokyo	5.1944	5.9.1944	10.1944	surrendered 8.1945, JMSDF 5.1948, stricken 1966	Ukuru group
屋久 [Yaku]			Uraga, Tokyo	5.1944	5.9.1944	10.1944	sunk 23.2.1945	Yaku and Inagi groups
粟国 [Aguni]			Tsurumi, Yokohama	2.1944	21.9.1944	12.1944	damaged 27.5.1945, never repaired	Yaku and Inagi groups
目斗 [Mokuto]			Hitachi, Sakurajima	11.1944	7.1.1945	2.1945	sunk 4.4.1945	Yaku and Inagi groups
稲木 [Inagi]			Mitsui, Tamano	5.1944	25.9.1944	12.1944	sunk 9.8.1945	Yaku and Inagi groups
宇久 [Uku]			Sasebo K K	8.1944	12.11.1944	12.1944	surrendered 8.1945, to USA 7.1947, BU	Yaku and Inagi groups
竹生 [Chikubu], 1955- あつみ [Atsumi]	PL103		Uraga, Tokyo	9.1944	24.11.1944	12.1944	surrendered 8.1945, JMSDF 5.1948, stricken 1962	Yaku and Inagi groups
羽節 [Habushi]			Mitsui, Tamano	8.1944	20.11.1944	1.1945	surrendered 8.1945, to USA 9.1947, BU	Yaku and Inagi groups
崎戸 [Sakito]			Hitachi, Sakurajima	9.1944	29.11.1944	1.1945	damaged 27.6.1945, repair incomplete	Yaku and Inagi groups
久賀 [Kuga]			Sasebo K K	8.1944	19.11.1944	1.1945	damaged 25.6.1945, never repaired	Yaku and Inagi groups
男鹿 [Oga]			Mitsui, Tamano	9.1944	30.12.1944	2.1945	sunk 2.5.1945	Yaku and Inagi groups
神津 [Kozu]			Uraga, Tokyo	10.1944	31.12.1944	2.1945	surrendered 8.1945, to Soviet Union 8.1947 (ЭК-47 [EK-47])	Yaku and Inagi groups
金輪 [Kanawa]			Mitsui, Tamano	1944	15.11.1944	3.1945	surrendered 8.1945, to United Kingdom 8.1947, BU	Yaku and Inagi groups
志賀 [Shiga], 1955- こじま [Kojima]	PL106		Sasebo K K	11.1944	9.2.1945	3.1945	surrendered 8.1945, JMSDF 5.1948, stricken 1964	Yaku and Inagi groups
奄美 [Amami]			Tsurumi, Yokohama	2.1944	30.11.1944	4.1945	surrendered 8.1945, to United Kingdom 12.1947, BU	Yaku and Inagi groups
保高 [Hodaka]			Uraga, Tokyo	11.1944	28.1.1945	3.1945	surrendered 8.1945, to USA 7.1947, BU	Yaku and Inagi groups
波太 [Habuto]			Hitachi, Sakurajima	12.1944	28.2.1945	4.1945	surrendered 8.1945, to United Kingdom 7.1947, BU	Yaku and Inagi groups
伊王 [Iwo]			Maizuru K K	11.1944	12.2.1945	3.1945	surrendered 8.1945, BU 7.1946	Yaku and Inagi groups
高根 [Takane]			Mitsui, Tamano	12.1944	3.2.1945	4.1945	surrendered 8.1945, BU 11.1947	Yaku and Inagi groups
伊唐 [Ikara]			Uraga, Tokyo	12.1944	2.2.1945	4.1945	sunk 1.8.1945	Yaku and Inagi groups
四阪 [Shisaka]			Hitachi, Sakurajima	8.1944	31.10.1944	12.1944	surrendered 8.1945, to China 7.1947 (惠安 [Hui An])	Yaku and Inagi groups
生野 [Ikino]			Uraga, Tokyo	1.1945	11.3.1945	7.1945	surrendered 8.1945, to Soviet Union 7.1947 (ЭК-41 [EK-41])	Yaku and Inagi groups
大津 [Otsu]			Hitachi, Sakurajima	1.1945	10.5.1945	---	sunk incomplete 7-8/1945, BU 3.1948	Yaku and Inagi groups
蔚美 [Urumi]			Uraga, Tokyo	1945	26.5.1945	8.1945	never commissioned, BU 1946	Yaku and Inagi groups
室津 [Murotsu]			Uraga, Tokyo	1945	15.6.1945	8.1945	never commissioned, BU 1946	Yaku and Inagi groups
友知 [Tomoshiri]			Sakurajima, Osaka	3.1945	---	---	BU incomplete 10.1947	Yaku and Inagi groups

Technical data

Data variant	as completed	JMSDF ships 1948
Displacement standard, t	940	940
Displacement full, t	1020	1020
Length, m	72.5 pp 77.5 wl 78.8 oa	72.5 pp 77.5 wl 78.8 oa
Breadth, m	9.10	9.10
Draught, m	3.06	3.06
No of shafts	2	2
Machinery	diesels	2 diesels
Power, h. p.	4200	4200
Max speed, kts	19.5	19.5
Fuel, t	diesel oil	diesel oil
Endurance, nm(kts)	5000(16)	5000(16)
Armament	Ukuru group: 1 x 2 - 120/45 10-shiki, 1 x 1 - 120/45 10-shiki, 5 x 3 - 25/60 96-shiki, 1 x 1 - 25/60 96-shiki, 1 x 1 - 81/12 ASW mortar, 12 DCT (120), mechanical minesweeping gear Yaku and Inagi groups: 1 x 2 - 120/45 10-shiki, 1 x 1 - 120/45 10-shiki, 5 x 3 - 25/60 96-shiki, 5 x 1 - 25/60 96-shiki, 1 x 1 - 81/12 ASW mortar, 12 DCT (120)	1948: unarmed 1955: 1 x 1 - 76/50 Mk 22, 2 x 1 - 20/70 Mk 10
Electronic equipment	most: 2-shiki 2-go, 3-shiki 1-go radars, 93-shiki sonar, 93-shiki hydrophone, E27 ECM suite some completed 1945: 2-shiki 2-go, 3-shiki 1-go radars, 3-shiki sonar, 93-shiki hydrophone, E27 ECM suite	SO-3 radar
Complement	150	150

Standard scale images

Graphics

Project history

Developed on the basis of drawings of Mikura class escorts and had simplified hull structure. For decrease in labour input of manufacturing quantity of surfaces with difficult form has been brought to a minimum. So, for example, funnel was fulfilled not circular, but hexagon.

5th Supplementary programme of 1941 provided building of 8 ships (Ukuru group), 34 more ships have been ordered under the additional programme of 1942 (Yaku group). Under the programme 1943/1944 21 ships were ordered (Inagi group). In August, 1944 building of 30 ships was cancelled (18, among Nos5251-5284 of Yaku group and 12 among Nos4701-4721 of Inagi group).

Modernizations

early 1945, all survived earlier ships: - minesweeping gear; + 4 x 1 - 25/60 96-shiki

1955, Satsuma, Okija, Tsugaru, Atsumi, Kojima: received new armament consisted of 1 x 1 - 76/50 Mk 22, 2 x 1 - 20/70 Mk 10

Naval service

Naval service: Hiburi 22.8.1944 was sunk W off Manila by US submarine Harder. Kume 28.1.1945 was sunk in Yellow Sea by US submarine Spadefish. Yaku 23.2.1945 was at coast of Vietnam by US submarine Hammerhead. Shonan 26.2.1945 off Hainan was sunk by US submarine Ное. Mokuto 4.4.1945 was lost on a mine in Shimonoseki area. Ode 2.5.1945 was sunk in Yellow Sea by US submarine Springer. Okinawa 9.11.1944 was damaged in Omrock Bay by US PT-boats, 30.7.1945 she was sunk at Maizuru by British carrier aircraft. Ikara 1.8.1945 at breaking down of Koguchi Canal in Nanao area was hard damaged and ran aground (under other version she was lost on a mine 9.8.1945 at Koguchi). Inagi 9.8.1945 was sunk at eastern coast of Honshu by US carrier aircraft. Habushi 8.4.1945 was damaged on a mine. Ikuna 10.4.1945 was damaged by US submarine Crevalle. Uku 9.5.1945 was damaged on a mine. Aguni 27.5.1945 was hard damaged in Maizuru area on a mine and was not under repair. Habuto 6.6.1945 was damaged on a mine. Kuga 25.6.1945 was hard damaged on a mine in Maizuru area and was not under repair. Sakito 27.6.1945 was damaged on a mine at coast of Korea, till the end of war repair was not completed. Iwo 3.6.1945 was damaged on a mine, 15.7.1945 she was damaged by US carrier aircraft. Not finished Otsu was hard damaged 24.7.1945 by US carrier aircraft in Sakurajima harbour. Takane  was damaged 30.7.1945 in Maizuru by US carrier aircraft.

Daito after end of war was used for minesweeping of Japanese inshore waters, 16.11.1945 in Tsushima Strait she was stricken by drifting mine and has sunk. Shinnan, Ikuna, Ukuru, Chikubu and Shiga in 1948 entered service in the JMSDF. Ikuno and Kozu in 1947 on reparation were transferred to the USSR and Shisaka to China.

5 ships were used as minesweeper tenders after war (Chikubu and Shiga served additionally as minesweepers) and transferred to MSA as weather ships in 1948. They served as JMSDF patrols from 1955.