British Repair ship
|Completed||1902 - Sir Raylton Dixon & Co Ltd, Middlesbrough|
|Date of attack||23 Dec 1939||Nationality: British|
|Fate||Sunk by U-22 (Karl-Heinrich Jenisch)|
|Position||55° 06'N, 1° 27'W - Grid AN 5461|
|Complement||7 (0 dead and 7 survivors).|
|Route||Portsmouth - Cambois - Scapa Flow|
|History||Completed in September 1902 as British steam merchant Seti for James Moss & Co, Liverpool. On 9 Nov 1914, the ship was purchased by the Admiralty and used as depot ship HMS Pandora at Harwich until 1918. Between 1920 and 1921 she was converted at HM Dockyard in Devonport to a submarine depot repair/supply ship and renamed HMS Dolphin on 3 Oct 1924. |
|Notes on event|
On 23 Dec 1939, HMS Dolphin struck a mine laid on 20 December by U-22 and sank 1.5 miles south-southeast of Blyth. The ship had been used as floating workshop in Portsmouth Dockyard and was being towed to Hughes Bolckow at Cambois to be stripped of all machinery prior to being sunk as blockship at Scapa Flow.
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