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O9 submarines (1926)


Photo



O9 Many thanks to Wolfgang Stöhr for additional information on this page.

Ships


Name No Yard No Builder Laid down Launched Comp Fate
O9   177 De Schelde, Vlissingen 9.1922 7.4.1925 1.1926 stricken 12.1944
O10   169 De Schelde, Vlissingen 12.1923 30.7.1925 9.1926 stricken 10.1944
O11   297 De Schelde, Vlissingen 12.1922 19.3.1925 1.1926 scuttled 14.5.1940


Technical data


Displacement standard, t483
Displacement normal, t526 / 656
Length, m

54.7

Breadth, m

5.70

Draught, m

3.53

No of shafts

2

Machinery

2 Sulzer 6-cyl diesels / 2 electric motors

Power, h. p.

900 / 500

Max speed, kts

12 / 8

Fuel, t

diesel oil

Endurance, nm(kts)3500(8) / 25(8)
Armament

1 x 1 - 88/42 Bofors No.2, 2 - 533 TT (bow, 4), 3 - 450 TT (2 bow, 1 stern, 6)

Complement

29

Diving depth operational, m60


Standard scale images


<i>O9</i> 1940
O9 1940


Graphics


<i>O9</i> <i>Many thanks to Wolfgang Stöhr for additional information on this page.</i>
O9 Many thanks to Wolfgang Stöhr for additional information on this page.


Project history

Built under the 1917 programme. Smallest version of K XI class. Double-hulled, equipped by hydraulically-driven periscopes. The first twin-shaft submarines for actions in mother country waters. First Dutch submarines with a central operation by all ballast tank valves.

Modernizations

late 1920s, all: + 1 x 1 - 12.7/90

Naval service

O9 and O10 in May, 1940 escaped to Britain; they were stricken in 1944, and BU in October, 1946. O11 was scuttled at Den Helder 14.5.1940, she was salvaged by Germans, but not commissioned and again scuttled in September, 1944; she was salvaged second time 10.12.1947 and broken up.



Many thanks to Wolfgang Stöhr for additional information on this page.