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fighting ships of the world

IMPERIAL JAPANESE NAVY (JAPAN)

COASTAL FORCES

"H1" and "H2" types motor gun boats (1941-1944)

"H1"

1-go 1940

Names

魚雷艇第1号隼艇 <1-go>

Builders

Baglietto, Varazze, Italy

Commissioned

1941

Losses

1-go (1944)

Transfers

none

Discarding

none

"H2"

Names

魚雷艇第2号隼艇 - 魚雷艇第9号隼艇 <2-go - 9-go>

Builders

Yokosuka K K

Commissioned

1943 - 1944

Losses

3-go (1944/45), 4-go (12/1/1944), 5-go (1944/45), 7-go (1944/45), 8-go (1944/45)

Transfers

none

Discarding

after 8/1945: 2-go, 6-go, 9-go

 

Displacement normal, t

H1: 26

H2: 24.7

Displacement full, t

 

Length, m

18.0

Breadth, m

4.50

Draught, m

H1: 0.82

H2: 0.93

No of shafts

2

Machinery

H1: Isotta-Fraschini petrol engines

H2: Kasei petrol engines

Power, h. p.

H1: 1840

H2: 2100

Max speed, kts

H1: 33

H2: 33.5

Fuel, t

petrol

Endurance, nm(kts) H2: 140(30)

Armament

2 x 1 - 20/65 98-shiki, 2 x 1 - 7.7/80, 2 DCR (2)

Complement

8

Ship project history: 1-go was delivered in 1940 with 2 main engines (2 x 1150 hp) and 2 cruising Alfa Romeo engines (2 x 100 hp) reaching 50 kts. Main engines power was de-rated and cruising engines removed after trials before commissioning in 1941. Armament before commissioning consisted of 1 MG and 2 TT. Had wooden hull with planning step.  First Japanese MGB.

Project of H2 type was developed on the basis of Italian-built patrol boat 1-go. Steel hull form was changed from planning step to V-shaped. Unlike a prototype, they had no auxiliary cruising engines.

Since 1945 survived boats received torpedo armament and re-rated to MTBs (Raitei).

Modernizations: 1945, most survived: were armed with 1 x 1 - 25/60 96-shiki or 1 x 1 - 13.2/76, 2 - 450 TT.

Naval service: No significant events

 

Ivan Gogin, 2008-14