| Navy | The Royal Navy |
| Type | Corvette |
| Class | Flower |
| Pennant | K 51 |
| Built by | Charles Hill & Sons Ltd. (Bristol, U.K.) : Richardson, Westgarth & Clark |
| Ordered | 21 Sep 1939 |
| Laid down | 28 Oct 1940 |
| Launched | 26 Jul 1941 |
| Commissioned | 4 Nov 1941 |
| End service | |
| Loss position | |
| History | Commisioned as Protea into the south African Navy 4 October 1947. Commanding Officers: Lt. Edward John Binfield, RNR T/Lt. Henry James Makepeace, RNR T/Lt. Edward Alexander King, RNVR |
Commands listed for HMS Rockrose (K 51)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Lt.Cdr. John Dudley Birch, RNR | 6 Aug 1941 | 6 Jul 1942 |
| 2 | Lt. Edward John Binfield, RNR | 6 Jul 1942 | 16 Oct 1943 |
| 3 | T/Lt. Henry James Makepeace, RNR | 16 Oct 1943 | 8 Jul 1945 |
| 4 | T/Lt. Edward Alexander King, RNVR | 8 Jul 1945 | 11 Jan 1946 |
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Noteable events involving Rockrose include:
8 Oct 1942
HMS Rockrose (Lt. E.J. Binfield, RNR) picks up 42 survivors from the American merchant Chickasaw City that was torpedoed and sunk the previous day by the German submarine U-172 about 85 nautical miles south-south-west of Capetown, South-Africa in position 34º15'S, 17º11'E.
HMS Rockrose also picks up 49 survivors from the Panamanian merchant Firethorn that was also torpedoed and sunk the previous day by the same u-boats but about 60 nautical miles north-west of Capetown in position 34º13'S, 17º21'E.
29 Oct 1942
The British merchant Ross is torpedoed and sunk of Cape Agulhas, South Africa in position 38º51'S, 21º40'E by the German submarine U-159. 39 survivors were later picked up by HMS Rockrose (Lt. E.J. Binfield, RNR).