HMS Patroller

HMS Patroller was a Ruler class escort carrier that saw little active service, being used as a ferry carrier under US Navy control early in 1945 before returning to British control to carry out similar duties.

The Patroller was laid down on 27 May 1942 as USS Keweenam (CVE-44).


The Patroller crossed the Atlantic with convoy CU37, departing New York on 27 August 1944 and reaching the UK on 7 September. She repeated the trip with convoy CU41, leaving New York on 29 September 1944 and reaching the UK on 10 October, and again with CU49, departing on 1 December and reaching the UK on 12 December.

No.1843 Squadron used her for deck landing training with their Corsair IIs on 21-23 December 1944


At the start of 1945 Patroller was lent to the United States Navy and was used to ferry United States Naval aircraft, although still with her British crew. In the spring of 1945 she was recalled to Royal Navy control. No.1852 Squadron joined her on 4 May 1945 in the US, she departed New York on 10 May and arrived in the UK on 21 May.

The Patroller was returned to the US Navy on 13 December 1946 and sold off as a merchantman.


No.1843 NAS

No.1843 used the Patroller for deck landing training with its Corsair IIs on 21-23 December 1944

No.1845 NAS

No.1845 Squadron embarked on Patroller with its Corsair IVs on 4 May 1945 to cross the Atlantic, disembarking in Belfast on 25 May 1945.

Displacement (loaded)

11,400t standard
15,390t deep load

Top Speed



27,500 miles at 11 knots


495ft 3in-496ft 8in oa


18-24 aircraft
Two 5in/38 US Mk 12 in two single mountings
Sixteen 40mm Bofors guns in eight double mountings
Twenty seven to thirty five 20mm cannon

Crew complement



6 May 1943


25 October 1943



Fleet Air Arm Carrier Warfare, Kev Darling. A complete history of the Fleet Air Arm's use of aircraft carriers, from the earliest experiments during the First World War, through the Second World War, where the carriers became the most important capital ships in the navy, the Korean War, which saw the Fleet Air Arm involved from the beginning to the end, the Falklands War, which re-emphasised the important of the carrier and right up to the current 'super-carriers'. [read full review]
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How to cite this article: Rickard, J (12 August 2010), HMS Patroller ,

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