The submarine HNMS O 9 (P 09) of the Royal Dutch Navy.
Technical information
| Type | Submarine |
| Displacement | 526 / 656 BRT |
| Length | 54.7m |
| Complement | 29 men |
| Armament | 1 3.5" gun 1 12.7mm MG 2 21" torpedo tubes (bow) 4 torpedoes 3 17.7" torpedo tubes (2 bow, 1 stern) 6 torpedoes |
| Max speed | 12 / 8 knots (surfaced/submerged) |
| Engines | Diesels / Electric, 2 shafts |
| Power | 900 / 500 HP (surfaced/submerged) |
| Notes on class | Submarines of this class that have detailed patrol info added are shown in bold in the list below. |
All ships of the O 9 class
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 | HNMS O 9 (P 09) | |
| | HNMS O 10 (P 10) | |
| | HNMS O 11 | Lost on 14 May 1940 |
Full wartime service history on this vessel. | ||
Royal Dutch Navy (more on See all Submarine classes.
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Books dealing with this subject include:
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