| Navy | The Royal Navy |
| Type | Patrol vessel |
| Class | Kil |
| Pennant | Z 11 |
| Built by | Pullman Standard Car Co. (Chicago, Illinois, U.S.A.) |
| Ordered | |
| Laid down | 24 Apr 1943 |
| Launched | 1 Oct 1943 |
| Commissioned | 13 Nov 1943 |
| End service | |
| Loss position | |
| History | Returned U.S.N. in December 1946. |
| Former name | USS PCE 837 |
Commands listed for HMS Kilmarnock (Z 11)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | T/A/Lt.Cdr. Kenneth Binfield Brown, RNVR | 13 Dec 1943 | Aug 1944 |
| 2 | T/Lt. Ivo Henry Bargrave-Deane, RNVR | Aug 1944 |
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Noteable events involving Kilmarnock include:
15 May 1944
The German submarine U-731 was sunk in the mid-Atlantic near Tangier, in position 35º54'N, 05º45'W, by depth charges from the British patrol vessel HMS Kilmarnock (T/A/Lt.Cdr. K.B. Brown, RNVR), the British anti-submarine trawler HMS Blackfly (T/A/Lt.Cdr. A.P. Hughes, DSC, RNR) and 2 US Catalina aircraft (VP-63/P-12/P-1). (see map)