HNLMS O 9 |
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| Class overview | |
|---|---|
| Name: | O 9 |
| Builders: | Koninklijke Maatschappij De Schelde, Flushing Nederlandsche Dok en Scheepsbouw Maatschappij, Amsterdam Fijenoord, Rotterdam |
| Operators: | Royal Netherlands Navy |
| Preceded by: | HNLMS O 8 |
| Succeeded by: | O 12 class |
| Built: | 1923–1926 |
| Completed: | 3 |
| General characteristics | |
| Type: | Submarine |
| Displacement: | 526 tons surfaced 656 tons submerged |
| Length: | 54.66 m (179 ft 4 in) |
| Beam: | 5.7 m (18 ft 8 in) |
| Draught: | 3.53 m (11 ft 7 in) |
| Propulsion: | 2 × 450 hp (336 kW) diesel engines 2 × 250 hp (186 kW) electric motors |
| Speed: | 12 kn (22 km/h; 14 mph) surfaced 8 kn (15 km/h; 9.2 mph) submerged |
| Range: | 3,500 nmi (6,500 km; 4,000 mi) at 8 kn (15 km/h; 9.2 mph) on the surface 25 nmi (46 km; 29 mi) at 8 kn (15 km/h; 9.2 mph) submerged |
| Complement: | 29 |
| Armament: | 2 × 21 inch bow torpedo tubes 2 × 17.7 inch bow torpedo tubes 1 × 17.7 inch stern torpedo tubes |
The O 9 class was a class of three submarines, built for the Royal Netherlands Navy. Used for patrols in the Dutch home waters. The class comprised O 9, O 10, and O 11. The submarines diving depth was 60 meters.
The ships were built by three different shipyards. O 9 was built by the Koninklijke Maatschappij De Schelde in Flushing. O 10 in Amsterdam at the Nederlandsche Dok en Scheepsbouw Maatschappij and O 11 in Rotterdam at Fijenoord shipyard.
| Name | Laid down | Launched | Commissioned | Decommissioned |
|---|---|---|---|---|
| HNLMS O 9 | 1 December 1923 or 23 September 1922 | 7 April 1925 | 18 January 1926 | 1 December 1944 |
| HNLMS O 10 | 24 Dec 1923 | 30 July 1925 | 1 September 1926 | 11 October 1944 |
| HNLMS O 11 | 24 December 1922 | 19 March 1925 | 18 January 1926 | Dutch Navy: 14 May 1940 (scuttled) German navy: September 1944 (sunk) |
At the time of the German invasion O 11 was under repair in Den Helder. On 14 May 1940 she was scuttled there to prevent her being captured by German forces. However the Germans raise the ship and order its repair. In September 1944 O 11 is sunk in Den Helder to block the entrance of the harbour.
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