Ships Involved
In September 1943 BdU had established the patrol line Leuthen of 21 U-boats south of Greenland; these were to intercept west-bound convoys as they were about to enter the Greenland Air Gap, where Allied aircraft were reckoned to be unable to operate due to the extreme range. Leuthen was to harry any convoy it encountered while crossing the gap, before breaking off to repeat the onslaught with the east-bound convoys.
On 12 September 1943 convoy ONS 18 left Liverpool bound for Halifax. Composed of 27 ships it was protected by B-3 Escort Group, comprising 2 destroyers, Escapade and Keppel, ( Cdr MB Evans RN, the Senior Officer:Escort); the frigate Towey, and 5 corvettes; Narcissus, Orchis, Roselys, Lobelia and Renoncule. ONS-18 was also accompanied by the MAC carrier Empire MacAlpine. When Western Approaches Command became aware of Leuthen, it was decided to reinforce ONS 18; the following convoy, ON 202 was ordered to close up, and a support group, SG 9, sent to join.
ON 202 had left Liverpool on 15 September, composed of 38 ships and escorted by Canadian escort group C-2, comprising 2 destroyers, Gatineau (commanded by Lt.Cdr PW Burnett RN, SOE) and Icarus; the frigate Lagan, and 3 corvettes; Drumheller, Kamloops and Polyanthus.
Support Group 9 comprised destroyer St Croix, frigate Itchen (Cdr CE Bridgman RN, SOE) and 3 corvettes, Chambly, Morden and Sackville.
Altogether the 65 ships were escorted by 19 warships, to face an attack from 21 U-boats.
Read more about this topic: Convoys ONS 18/ON 202
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