Hr. Ms. O 8
Career (United Kingdom)
Builder:	Canadian Vickers
Launched:	10 June 1915
Fate:	Sold to the Netherlands, 4 May 1917
Career (Netherlands)
Name:	Hr.Ms. O 8
Acquired:	4 May 1917
Fate:	Scuttled by Dutch Forces following German invasion of the Netherlands at start of Second World War. Later refloated by Germany
Career (Germany)
Name:	U-D1
Decommissioned:	23 November 1943
Fate:	Scuttled in Kiel Harbour following Allied advance, 3 May 1945
General characteristics (as built)
Class and type:	H-class submarine
Displacement:	363 long tons (369 t) surfaced 434 long tons (441 t) submerged
Length:	150 ft 3 in (45.80 m)
Beam:	15 ft 4 in (4.67 m)
Propulsion:	1 × 480 hp (358 kW) diesel engine 2 × 620 hp (462 kW) electric motors
Speed:	13 knots (24 km/h; 15 mph) surfaced 10 knots (19 km/h; 12 mph) submerged
Range:	1,600 nmi (3,000 km) at 10 kn (19 km/h; 12 mph) surfaced 130 nmi (240 km) at 2 kn (3.7 km/h; 2.3 mph) submerged
Complement:	22
Armament:	• 4 × 18-inch (450mm) bow torpedo tubes • 8 × 18 inch torpedoes

HMS H6, was a British H-class submarine of the Royal Navy built by Canadian Vickers & Co. during World War I.

History [link]

She was completed on 10 June 1915 and was commissioned by the Royal Navy the same year. However, her service in the Royal Navy was short. On 19 January 1916 she ran aground near the Dutch island of Schiermonnikoog after which she was interned by the Dutch Navy. On 4 May 1917 an agreement was reached to sell H6 to the Netherlands.

Dutch service [link]

The Dutch Navy renamed the H6 to Hr.Ms. O 8 and refitted her with knowledge gained from the interned German submarine UC-8. After UC-8 was bought from Germany the O 8 was equipped with the UC-8's Zeiss periscope. During maintenance in October 1921, O 8 sank in the harbour at Den Helder. Because only minor damage was sustained, she was repaired and continued service. In the summer of 1925 O 8 together with the K XI, Jacob van Heemskerk, Tromp, Z 3 and Z 5 were part of an exercise in the Baltic Sea.

During the German attack on the Netherlands at the start of the Second World War the O 8 was still in Dutch service. Because of her old age it was decided to scuttle her.

German service [link]

After the surrender of the Netherlands the German forces were able raise the O 8 and found her almost fully intact.^[1]

Germany took the O 8 into service as U-D1 and transferred her from Den Helder to Kiel. In Kiel she was used as training ship to train crews for the German U-boats. Because of her old age she was decommissioned on 23 November 1943. On 3 May 1945, she was scuttled in the harbor at Kiel.^[2]

References [link]

v t e Holland 602 type submarine  Royal Canadian Navy CH class CH-14 CH-15  Chilean Navy Chilean H class H1 ⁄ Guacolda H2 ⁄ Tegualda H3 ⁄ Rucumilla H4 ⁄ Guale H5 ⁄ Quidora H6 ⁄ Fresia  Regia Marina Italian H class H1 H2 H3 H4 H5 H6 H7 H8  Imperial Russian and  Soviet Navies American Holland class AG 11 AG 12 AG 13 / AG 16 AG 14 AG 15 AG 21 AG 22 AG 23 AG 24 AG 25 AG 26 AG 27  Royal Navy British H class H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 H31 H32 H33 H34 H41 H42 H43 H44 H47 H48 H49 H50 H51 H52  United States Navy United States H class H-1 H-2 H-3 H-4 H-5 H-6 H-7 H-8 H-9

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