| Navy | The Royal Navy |
| Type | Submarine Depot Ship |
| Class | |
| Pennant | F 31 |
| Built by | Sir James Laing & Son (Sunderland, U.K.) |
| Ordered | |
| Laid down | |
| Launched | 27 Oct 1905 |
| Commissioned | Oct 1907 |
| End service | |
| Loss position | |
| History | Displacement: 11300 tons. Served in home waters during World War Two. Scrapped at Newport in July 1947. |
Commands listed for HMS Cyclops (F 31)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Cdr. Benjamin Bryant, DSC, DSO, RN | 30 Oct 1944 | 4 Feb 1945 |
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