| Navy | The Royal Canadian Navy |
| Type | Destroyer |
| Class | Town |
| Pennant | I 57 |
| Built by | Fore River Shipbuilding Co. (Quincy, Massachusetts, U.S.A.) |
| Ordered | |
| Laid down | 8 Jun 1918 |
| Launched | 31 Aug 1918 |
| Commissioned | 24 Sep 1940 |
| End service | 15 Sep 1945 |
| Loss position | |
| History | Assigned torpedo training ship on 2 March 1944. Decommissioned on 15 September 1945. Commanding Officers: T/A/Lt.Cdr. Thomas Philip Ryan, RCNR Lt.Cdr. Ronald Fraser Harris, RCNR ??? Lt.Cdr. Ronald Fraser Harris, RCNR A/Lt.Cdr. William Herbert Willson, RCN T/Lt. Jack Cranfield Smyth, RCNR Cdr. Raymond Butler Mitchell, RD, RCNR |
| Former name | USS Thatcher (DD 162) |
Commands listed for HMCS Niagara (I 57)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Edgar Lorne Armstrong, RCN | 24 Sep 1940 | 2 Jul 1941 |
| 2 | Thomas Philip Ryan, RCNR | 3 Jul 1941 | 23 Feb 1942 |
| 3 | Ronald Fraser Harris, RCNR | 24 Feb 1942 | 4 Oct 1942 |
| 4 | Ronald Fraser Harris, RCNR | 15 Oct 1942 | 9 Sep 1943 |
| 5 | William Herbert Willson, RCN | 10 Sep 1943 | 5 Mar 1944 |
| 6 | Jack Cranfield Smyth, RCNR | 6 Mar 1944 | 18 Jul 1944 |
| 7 | Raymond Butler Mitchell, RD, RCNR | 19 Jul 1944 | ??? |
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Noteable events involving Niagara include:
1 Apr 1942
The British merchant Rio Blanco is torpedoed and sunk about 60 nautical miles east of Cape Hatteras in position 35º16'N, 74º18'W by the German submarine U-160. HMCS Niagara (Lt.Cdr. R.F. Harris, RCNR) later picks up 9 survivors.