The O class destroyer HMS Orwell.
Technical information
| Type | Destroyer |
| Displacement | 1540 BRT |
| Length | 345 feet |
| Complement | 175 men |
| Armament | As designed; 4 4.7" guns (4x1) 4 2pdr AA (1x4) 6 20mm AA (2x2, 2x1) 8 21" torpedo tubes(2x4) Upon completetion the after bank of torpedo tubes was omitted in favour of a 4" AA gun. HMS Obdurate, HMS Obedient, HMS Opportune and HMS Orwell were fitted as minelayers and had a different armament when completed; 4 x 4" guns (4x1) 4 x 2pdr AA (1x40 6 x 20mm (2x2, 2x1) 8 x 21" torpedo tubes (2x4) |
| Max speed | 37 knots |
| Engines | Geared turbines, 2 shafts |
| Power | 40000 HP |
| Notes on class | The displacement of HMS Onslow was 1550 tons as she was fitted as flottilla leader. |
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Flotilla leader
See all Destroyer classes. |
Royal Navy (more on 
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O class ships hit by U-boats (1) | |||
| 25 Jan 1944 | HMS Obdurate | Damaged | U-360 |
 The last stand of the tin can sailors Hornfischer, James D. |
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