| Navy | The Royal Navy |
| Type | Submarine |
| Class | Type VIIC |
| Pennant | P 715 |
| Built by | Blohm & Voss (Hamburg, Germany) |
| Ordered | |
| Laid down | 21 May, 1940 |
| Launched | 20 Mar, 1941 |
| Commissioned | 19 Sep, 1941 |
| End service | Feb, 1944 |
| Loss position | |
| History | Commissioned as German U-570 on 15 May 1941.
The German submarine U-570 was captured by Britain on 27 August 1941 in the North Atlantic south of Iceland, in position 62.15N, 18.35W, after being damaged by a British Hudson aircraft (Sqdn. 269/S). She was towed to Thorlaks-hafn, Iceland and salvaged. She was commissioned into the Royal Navy as HMS Graph on 19 September 1941. HMS Graph was decommissioned from active service in February 1944. Graph was lost on 20 March 1944 when she ran aground on the westcoast of the Island of Islay, Scotland. Commanding Officers: Lt. Edward Dudley Norman, DSO, DSC, RN Lt. Peter Barnsley Marriot, RN Lt. David Swanston, DSC, RN The Navy List of December 1943 no longer lists HMS Graph as an active unit |
| Former name | U-570 |
| Noteable events involving Graph include: 21 Oct, 1942 |
 Diary of a Submariner de Majnik, John |
Books dealing with this subject include:
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