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H1 small submarines (1916 - 1918)


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Italian H class submarine 1947

Ships


Name No Yard No Builder Laid down Launched Comp Fate
H1     Canadian Vickers, Montreal, Canada 5.1916 16.10.1916 12.1916 stricken 3.1947
H2     Canadian Vickers, Montreal, Canada 5.1916 19.10.1916 12.1916 stricken 3.1947
H3     Canadian Vickers, Montreal, Canada 8.1916 26.4.1917 5.1917 stricken 4.1937
H4     Canadian Vickers, Montreal, Canada 8.1916 17.4.1917 5.1917 stricken 3.1947
H5     Canadian Vickers, Montreal, Canada 8.1916 25.4.1917 5.1917 sunk 16.4.1918
H6     Canadian Vickers, Montreal, Canada 11.1916 23.4.1917 7.1917 captured by Germany 14.9.1943
H7     Canadian Vickers, Montreal, Canada 11.1916 24.5.1917 5.1917 stricken 10.1930
H8     Canadian Vickers, Montreal, Canada 11.1916 24.5.1917 6.1918 sunk 5.6.1943


Technical data


Displacement standard, t343
Displacement normal, t

364 / 475

Length, m

45.8

Breadth, m

4.69

Draught, m

3.76

No of shafts

2

Machinery

2 NLSE diesels / 2 Dynamic Electric electric motors

Power, h. p.

480 / 620

Max speed, kts

12 / 11

Fuel, t

diesel oil 16

Endurance, nm(kts)2640(11) / 110(5)
Armament

4 - 450 TT (bow, 6)

Complement

22

Diving depth operational, m50


Standard scale images


<i>H1</i> 1943
H1 1943
<i>H2</i> 1930
H2 1930


Graphics


Italian <i>H</i> class submarine 1947
Italian H class submarine 1947


Project history

The well-known Holland boats, built in the USA and assembled in Canada in 1916-1917. One of the most successful design of time. Single-hulled.

Modernizations

1920, all survived: + 1 x 1 - 76/30 Armstrong 1914.

1930s, all survived: + hydrophone (presumably)

Naval service

H5 was sunk 16.4.1918 by mistake in Southern Adriatic by British sister-ship H1 (temporarily called HB1, not to confuse British and Italian submarines). H8 was sunk at La Spezia 5.6.1943 by Allied aircraft. H6 was captured by German troops in September, 1943 and scuttled by them.