.jpg) HMSD1 | |
| History | |
|---|---|
 United Kingdom | |
| Name | HMSD1 |
| Builder | Vickers Armstrong,Barrow-in-Furness |
| Laid down | 14 May 1907 |
| Launched | 16 May 1908 |
| Commissioned | September 1909 |
| Fate | Sunk (as a target) on 23 October 1918 |
| General characteristics | |
| Class and type | D-class submarine |
| Displacement | Surfaced= 483 tons / Submerged= 595 tons |
| Length | 163.0 ft (49.7 m) (oa) |
| Beam | 13.6 ft (4.1 m) (oa) |
| Propulsion | 550hp electric 1750 hp diesel twin screws |
| Speed | Surfaced=14.0kn / Dived= 10.0 (design) 9.0 (service) |
| Range | Surface= 2500nmi at 10 kn / Submerged=45 nmi at 5 kn |
| Complement | 25 |
| Armament | 3 × 18 in (45 cm)torpedo tubes (2 bow, 1 stern) |
HMSD1 was one of eightD-class submarine built for theRoyal Navy during the first decade of the 20th century.
The D-class submarines were designed as improved and enlarged versions of the precedingC class, withdiesel engines replacing the dangerouspetrol engines used earlier. The submarines had a length of 163 feet (49.7 m)overall, abeam of 20 feet 6 inches (6.2 m) and a meandraught of 10 feet 5 inches (3.2 m). Theydisplaced 483 long tons (491 t) on the surface and 595 long tons (605 t) submerged.[1] The D-class submarines had a crew of 25 officers andratings and were the first to adoptsaddle tanks.[2]
For surface running, the boats were powered by two 600-brake-horsepower (447 kW) diesels, each driving onepropeller shaft. When submerged each propeller was driven by a 275-horsepower (205 kW)electric motor. They could reach 14knots (26 km/h; 16 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater. On the surface, the D class had a range of 2,500nautical miles (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph).[2]
The boats were armed with three18-inch (45 cm)torpedo tubes, two in the bow and one in the stern. They carried one reload for each tube, a total of six torpedoes.[2]
D1 waslaid down byVickers on 14 May 1907 and waslaunched on 16 May 1908 atBarrow. She wascommissioned in September 1909. In 1910,D1 took part in the annual manoevures, during which she "torpedoed" two "Blue Fleet"cruisers offColonsay. This showed that the D class could operate a considerable distance from their base atFort Blockhouse.
D1 was sunk as a target on 23 October 1918 nearDartmouth.[3]
The wreck was discovered by divers looking for the remains of GermanU-Boats and has been afforded protected status.[4]
Shipwrecks and maritime incidents in October 1918 | |
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| Shipwrecks |
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| Other incidents |
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50°19′58″N3°29′58″W / 50.33278°N 3.49944°W /50.33278; -3.49944
