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IMPERIAL JAPANESE NAVY / JAPAN MARITIME SELF-DEFENSE FORCE (JAPAN)

ESCORTS

1-GO auxiliary patrol ships (1945)

1-go 1945

Name No Builder Laid down Launched Comp Fate
第1号哨戒特務艇 <1-go>(Pa1)   Yamanishi, Ishinomaki / Yokosuka K K   1945 1945 surrendered 8/1945, BU 1947
第2号哨戒特務艇 <2-go>(Pa2)   Yamanishi, Ishinomaki / Yokosuka K K   1945 1945 surrendered 8/1945, BU 1947
第3号哨戒特務艇 <3-go>(Pa3)   Yamanishi, Ishinomaki / Yokosuka K K   1945 1945 surrendered 8/1945, sold mercantile 1947
第4号哨戒特務艇 <4-go>(Pa4)   Yamanishi, Ishinomaki   1945 --- // 1946 completed mercantile
第25号哨戒特務艇 <25-go>(Pa25)   Murakami, Ishinomaki / Yokosuka K K   1945 1945 surrendered 8/1945, foundered 19/9/1945
第26号哨戒特務艇 <26-go>(Pa26)   Murakami, Ishinomaki / Yokosuka K K   1945 1945 surrendered 8/1945, sold mercantile 1947
第27号哨戒特務艇 <27-go>(Pa27)   Murakami, Ishinomaki   1945 --- BU incomplete 1946
第31号哨戒特務艇 <31-go>(Pa31), 1956- うきしま <Ukishima> MS18 Funaya, Hakodate / Yokosuka K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, harbour vessel 1962
第32号哨戒特務艇 <32-go>(Pa32)   Funaya, Hakodate   1945 --- // 1947 completed mercantile
第33号哨戒特務艇 <33-go>(Pa33)   Funaya, Hakodate   --- --- BU incomplete 1946
第34号哨戒特務艇 <34-go>(Pa34)   Funaya, Hakodate   --- --- BU incomplete 1946
第37号哨戒特務艇 <37-go>(Pa37)   Miho, Shimizu / Yokosuka K K   1945 1945 sunk 18/7/1945
第38号哨戒特務艇 <38-go>(Pa38)   Miho, Shimizu   --- --- BU incomplete 1946
第54号哨戒特務艇 <54-go>(Pa54)   Koyanagi, Shizuoka / Yokosuka K K   1945 1945 surrendered 8/1945, foundered 1945
第55号哨戒特務艇 <55-go>(Pa55)   Koyanagi, Shizuoka   1945 --- // 1946 completed mercantile
第64号哨戒特務艇 <64-go>(Pa64)   Saga, Takaoka / Maizuru K K   1945 1945 surrendered 8/1945, sold mercantile 1947
第65号哨戒特務艇 <65-go>(Pa65)   Saga, Takaoka   1945 --- BU incomplete 1946
第66号哨戒特務艇 <66-go>(Pa66)   Saga, Takaoka   --- --- BU incomplete 1946
第84号哨戒特務艇 <84-go>(Pa84), 1956- つるしま <Tsurushima> MS19 Yonago, Yonago / Maizuru K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, harbour vessel 1963
第85号哨戒特務艇 <85-go>(Pa85)   Yonago, Yonago   1946 --- // 1947 completed mercantile
第86号哨戒特務艇 <86-go>(Pa86)   Yonago, Yonago   --- --- BU incomplete 1946
第90号哨戒特務艇 <90-go>(Pa90)   Ichikawa, Ujiyamada / Yokosuka K K   1945 1945 lost 8/1945
第91号哨戒特務艇 <91-go>(Pa91)   Ichikawa, Ujiyamada   1945 --- BU incomplete 1946
第92号哨戒特務艇 <92-go>(Pa92)   Ichikawa, Ujiyamada   1945 --- BU incomplete 1946
第93号哨戒特務艇 <93-go>(Pa93)   Ichikawa, Ujiyamada   1945 --- BU incomplete 1946
第110号哨戒特務艇 <110-go>(Pa110)   Nishii, Ujiyamada / Kure K K   1945 1945 sunk 18/7/1945
第111号哨戒特務艇 <111-go>(Pa111)   Nishii, Ujiyamada / Kure K K   1945 1945 never commissioned, foundered late 1945
第122号哨戒特務艇 <122-go>(Pa122)   Goriki, Ujiyamada / Kure K K   1945 1945 sunk 18/7/1945
第123号哨戒特務艇 <123-go>(Pa123)   Goriki, Ujiyamada / Kure K K   1945 1945 never commissioned, BU 1946
第134号哨戒特務艇 <134-go>(Pa134), 1956- おとしま <Otoshima> MS20 Shikoku, Takamatsu / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, stricken 1962
第135号哨戒特務艇 <135-go>(Pa135), 1956- まつしま <Matsushima> MS21 Shikoku, Takamatsu / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, harbour vessel 1963
第136号哨戒特務艇 <136-go>(Pa136), 1956- ひめしま <Himeshima> MS22 Shikoku, Takamatsu / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, stricken 1962
第137号哨戒特務艇 <137-go>(Pa137)   Shikoku, Takamatsu / Kure K K   1945 1945 surrendered 8/1945, wrecked 18/4/1946
第138号哨戒特務艇 <138-go>(Pa138), 1956- あわしま <Awashima> MS23 Shikoku, Takamatsu / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, harbour vessel 1962
第139号哨戒特務艇 <139-go>(Pa139), 1956- かるしま <Karushima> MS24 Shikoku, Takamatsu / Kure K K   1945 late 1945 MSDF minesweeper 1948, harbour vessel 1963
第140号哨戒特務艇 <140-go>(Pa140)   Shikoku, Takamatsu   1945 --- BU incomplete 1946
第152号哨戒特務艇 <152-go>(Pa152), 1956- かもしま <Kamoshima> MS25 Fukushima, Matsue / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, stricken 1962
第153号哨戒特務艇 <153-go>(Pa153), 1956- たかしま <Takashima> MS26 Fukushima, Matsue / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, harbour vessel 1963
第154号哨戒特務艇 <154-go>(Pa154) MS27 Fukushima, Matsue / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, sunk 23/5/1949
第155号哨戒特務艇 <155-go>(Pa155)   Fukushima, Matsue / Kure K K   1945 1945 never commissioned, BU 1946
第156号哨戒特務艇 <156-go>(Pa156)   Fukushima, Matsue   --- --- cancelled 4/1945
第163号哨戒特務艇 <163-go>(Pa163)   Hayashikawa, Shimonoseki / Sasebo K K   1945 1945 sunk 22/8/1945
第164号哨戒特務艇 <164-go>(Pa164)   Hayashikawa, Shimonoseki / Sasebo K K   1945 1945 wrecked 30/5/1945
第165号哨戒特務艇 <165-go>(Pa165)   Hayashikawa, Shimonoseki / Sasebo K K   1945 1945 surrendered 8/1945, foundered late 1945
第166号哨戒特務艇 <166-go>(Pa166)   Hayashikawa, Shimonoseki / Sasebo K K   1945 1945 sunk 12/8/1945
第173号哨戒特務艇 <173-go>(Pa173)   Tokushima, Tokushima / Kure K K   1945 1945 sunk 29/3/1945, raised but never repaired
第174号哨戒特務艇 <174-go>(Pa174)   Tokushima, Tokushima / Kure K K   1945 1945 surrendered 8/1945, BU 1946
第175号哨戒特務艇 <175-go>(Pa175) MS28 Tokushima, Tokushima / Kure K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, wrecked 30/10/1950
第176号哨戒特務艇 <176-go>(Pa176)   Tokushima, Tokushima / Kure K K   1945 1945 surrendered 8/1945, wrecked 18/4/1946
第177号哨戒特務艇 <177-go>(Pa177)   Tokushima, Tokushima / Kure K K   1945 --- sunk incomplete 4/7/1945
第178号哨戒特務艇 <178-go>(Pa178)   Tokushima, Tokushima / Kure K K   1945 --- sunk incomplete 4/7/1945
第179号哨戒特務艇 <179-go>(Pa179), 1956- おしま <Oshima> MS29 Jinen, Moji / Sasebo K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, stricken 1963
第180号哨戒特務艇 <180-go>(Pa180)   Jinen, Moji / Sasebo K K   1945 1945 never commissioned, foundered late 1945
第181号哨戒特務艇 <181-go>(Pa181)   Jinen, Moji   --- --- BU incomplete 1946
第191号哨戒特務艇 <191-go>(Pa191)   Fukuoka, Fukuoka / Sasebo K K   1945 1945 surrendered 8/1945, MSDF minesweeper 1948, wrecked 27/10/1950
第192号哨戒特務艇 <192-go>(Pa192)   Fukuoka, Fukuoka / Sasebo K K   1945 1945 surrendered 8/1945, BU 1946
第193号哨戒特務艇 <193-go>(Pa193)   Fukuoka, Fukuoka   1945 --- foundered incomplete 18/9/1945
23 more units with hulls Nos between 2121 and 2320 were built in sections in 1945, contracts were cancelled 2/7/1945

 

Displacement standard, t

238

Displacement full, t

285

Length, m

28.5 wl 29.8 oa

Breadth, m

6.09

Draught, m

2.45

No of shafts

1

Machinery

diesel

Power, h. p.

400

Max speed, kts

9

Fuel, t

diesel oil
Endurance, nm(kts) 3500(9)
Armament

2 x 2 - 25/60 96-shiki, 2 DCT (12 ΓΑ), 2 x 1 - 120 AA rocket launchers

Sensors 13-go radar

Complement

 

 

Ship project history: Project was developed on the basis of auxiliary chaser of Cha1 class. Intended for escorting of convoys in inshore area. In addition to regular armament (2 25mm and 3 13.2mm MGs, 8 DC) they can also carry 2 bow TTs. Really TTs were never installed and boats of class were commissioned with strengthened AA armament.

    In July, 1945 23 more boats (Nos between 2121 and 2320) were built in sections, contract was cancelled 2/7/1945. Further 120 boats of this class were cancelled in 1945 and 80 boats (Nos 2321-2400) were never ordered.

 

Modernizations: 1948, MSDF minesweepers were rearmed with 1 x 1 - 40/60 Mk 3, 6 x 1 - 25/60 96-shiki, sweeps

JMSDF

 

1-go 1945

Name No Builder Laid down Launched Comp Fate
第31号哨戒特務艇 <31-go>(Pa31), 1956- うきしま <Ukishima> MS18 Funaya, Hakodate / Yokosuka K K   1945 1945 // 1948 harbour vessel 1962
第84号哨戒特務艇 <84-go>(Pa84), 1956- つるしま <Tsurushima> MS19 Yonago, Yonago / Maizuru K K   1945 1945 // 1948 harbour vessel 1963
第134号哨戒特務艇 <134-go>(Pa134), 1956- おとしま <Otoshima> MS20 Shikoku, Takamatsu / Kure K K   1945 1945 // 1948 stricken 1962
第135号哨戒特務艇 <135-go>(Pa135), 1956- まつしま <Matsushima> MS21 Shikoku, Takamatsu / Kure K K   1945 1945 // 1948 harbour vessel 1963
第136号哨戒特務艇 <136-go>(Pa136), 1956- ひめしま <Himeshima> MS22 Shikoku, Takamatsu / Kure K K   1945 1945 // 1948 stricken 1962
第138号哨戒特務艇 <138-go>(Pa138), 1956- あわしま <Awashima> MS23 Shikoku, Takamatsu / Kure K K   1945 1945 // 1948 harbour vessel 1962
第139号哨戒特務艇 <139-go>(Pa139), 1956- かるしま <Karushima> MS24 Shikoku, Takamatsu / Kure K K   1945 late 1945 // 1948 harbour vessel 1963
第152号哨戒特務艇 <152-go>(Pa152), 1956- かもしま <Kamoshima> MS25 Fukushima, Matsue / Kure K K   1945 1945 // 1948 stricken 1962
第153号哨戒特務艇 <153-go>(Pa153), 1956- たかしま <Takashima> MS26 Fukushima, Matsue / Kure K K   1945 1945 // 1948 harbour vessel 1963
第154号哨戒特務艇 <154-go>(Pa154) MS27 Fukushima, Matsue / Kure K K   1945 1945 // 1948 sunk 23/5/1949
第175号哨戒特務艇 <175-go>(Pa175) MS28 Tokushima, Tokushima / Kure K K   1945 1945 // 1948 wrecked 30/10/1950
第179号哨戒特務艇 <179-go>(Pa179), 1956- おしま <Oshima> MS29 Jinen, Moji / Sasebo K K   1945 1945 // 1948 stricken 1963

 

Displacement standard, t

238

Displacement full, t

285

Length, m

28.5 wl 29.8 oa

Breadth, m

6.09

Draught, m

2.45

No of shafts

1

Machinery

diesel

Power, h. p.

400

Max speed, kts

9

Fuel, t

diesel oil
Endurance, nm(kts) 3500(9)
Armament 1 x 1 - 40/60 Mk 3, 6 x 1 - 25/60 96-shiki, minesweeping gear
Sensors 13-go radar

Complement

 

 

 

Naval service: Pa173 was mined 29/3/1945 in Wakamatsu harbour, salvaged but never repaired. Pa164 was wrecked 30/5/1945 off Kyushu. Pa177 and Pa178 were destroyed 4/7/1945 during completion at Tokushima by American Army aircraft. Pa37 and Pa110 were sunk 18/7/1945 by American aircraft at Yokosuka, Pa122 was badly damaged this time and sank later. Pa90 was lost by unknown cause off Sakata in August-September, 1945. Pa54, Pa165 and Pa180 were foundered in August, 1945 in Yokosuka as result of leaks. Pa166 was sunk off Urasaki 12/8/1945 by American aircraft. Pa163 was mined 22/8/1945 in Nano Bay. Incomplete Pa193 was destroyed by storm 18/9/1945 at Fukuoka, boat was never completed. Pa25 was lost in storm 19/9/1945 at Shimonoseki. Pa111 foundered after war late 1945. Pa137 and Pa176 ran aground and sank off Shimonoseki 18/4/1946. MS27 (ex-Pa154) was mined 23/5/1949 near Manju (off Shimonoseki). MS30 (ex-Pa191) wrecked 27/10/1950 off Koriyama. MS28 (ex-Pa175) wrecked off Suzaki (Shizuoka prefecture) 30/10/1950.
 

85-go

© Ivan Gogin, 2008-16