Convoy ON 207

Convoy ON 207
Part of World War II
Date 26–29 October 1943 Location North Atlantic Result Allied victory
Belligerents
United Kingdom  Canada	Germany
Commanders and leaders
Comm: Escort:Cdr JA Burnett	Admiral Karl Dönitz
Strength
52 ships 19 escorts	18 U-boats
Casualties and losses
no losses	3 U-boats destroyed

ON 207 was a North Atlantic convoy of the ONS/ON series which ran during the battle of the Atlantic in World War II. It was the subject of a major U-boat attack in October 1943, the fourth battle in the German autumn offensive.

Still believing their new weapons and tactics gave them an advantage, despite the losses suffered by wolfpack Schlieffen and unaware of the poor results achieved during its attack on convoys ONS 20 and ON 206, Befehlshaber der Unterseeboote (BdU) re-organized the boats then in the North Atlantic into patrol line Siegfried to continue the offensive. The next convoy subjected to an attack was ON 207.

ON 207 departed Liverpool on 18 October 1943, bound for New York. Composed of 52 ships it was escorted by Canadian escort group C-1, which comprised 3 destroyers; HMS Forester (Cdr JA Burnett as Senior Officer Escort), HMCS St Laurent and HMCS Assiniboine, frigate HMS Ettrick and 3 corvettes; HMCS Agassiz, HMCS Galt and HMS Celandine. The escort was augmented by the escort carrier HMS Biter, with 3 sloops HMS Crane, HMS Pheasant and HMS Chanticleer as escort, and the Merchant aircraft carrier Amastra, though she had to return to base early in the voyage with storm damage.

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