| Navy | The Royal Canadian Navy |
| Type | Corvette |
| Class | Flower |
| Pennant | K 233 |
| Built by | Port Arthur Shipbuilding Co. (Port Arthur, Ontario, Canada) |
| Ordered | |
| Laid down | 28 Apr 1941 |
| Launched | 18 Sep 1941 |
| Commissioned | 26 May 1942 |
| End service | 11 Jul 1945 |
| Loss position | |
| History | Decommissioned on 11 July 1945. Commanding Officers: T/Lt. Kenneth Taylor Chisholm, RCNVR |
Commands listed for HMCS Port Arthur (K 233)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | T/Lt. Edward Theodore Simmons, RCNVR | 30 Apr 1942 | 8 Jul 1943 |
| 2 | Kenneth Taylor Chisholm, RCNVR | 9 Jul 1943 | 11 Jul 1945 |
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Noteable events involving Port Arthur include:
19 Jan 1943
The British destroyer HMS Antelope (Lt.Cdr. E.N. Sinclair, RN) and the Canadian corvette HMCS Port Arthur (T/A/Lt.Cdr. E.T. Simmons, DSC, RCNVR) sank the Italian submarine Tritone (Cdr. Paolo Monechi / 26 dead.) near Bougie, Algeria in position 37º06'N, 05º22'E. The Italian submarine was on it's first war patrol. She was only commissioned on 10 October 1942. (see map)