| Navy | The Royal Canadian Navy |
| Type | Frigate |
| Class | River |
| Pennant | K 456 |
| Built by | Canadian Vickers Ltd. (Montreal, Quebec, Canada) |
| Ordered | |
| Laid down | 28 May 1943 |
| Launched | 25 Aug 1943 |
| Commissioned | 13 Dec 1943 |
| End service | 27 Nov 1945 |
| Loss position | |
| History | Decommissioned 27 November 1945. For more on this ship, try this link (offsite link) Commanding Officers: A/Lt.Cdr. William Roland Stacey, RCNR T/Lt. Charles George McIntosh, RCNR Lt.Cdr. William Roland Stacey, RCNR .......... (?) |
Commands listed for HMCS Saint John (K 456)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Roy Milton Mosher, RCNR | 13 Dec 1943 | 20 Feb 1944 |
| 2 | William Roland Stacey, RCNR | 21 Feb 1944 | 18 Feb 1945 |
| 3 | Charles George McIntosh, RCNR | 19 Feb 1945 | 1 Apr 1945 |
| 4 | Lt.Cdr. William Roland Stacey, DSC, RCNR | 2 Apr 1945 | 19 Jun 1945 |
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Noteable events involving Saint John include:
1 Sep 1944
The German submarine U-247 was sunk in the Channel about 11 nautical miles south-east of Lands End, in position 49º54'N, 05º49'W, by depth charges from the Canadian frigates HMCS Saint John (A/Lt.Cdr. W.R. Stacey, RCNR) and HMCS Swansea (Lt.Cdr. A.F.C. Layard, DSO, RN). (see map)
16 Feb 1945
The German submarine U-309 was sunk in the North Sea east of the Moray Firth, in position 58º09'N, 02º23'W, by depth charges from the Canadian frigate HMCS Saint John (Lt.Cdr. W.R. Stacey, RCNR) (see map)
27 Feb 1945
HMCS Saint John (Lt. C.G. McIntosh, RCNR) arrives at Cardiff, U.K. to begin a refit.