Convoys ONS 18/ON 202

Convoys ONS 18/ON 202
Part of Battle of the Atlantic/World War II
Date 19–23 September 1943 Location North Atlantic Result Allied victory
Belligerents
Germany	United Kingdom  Canada
Commanders and leaders
Admiral Karl Dönitz	ONS 18: Comm: HC Forsyth Escort:Cdr MB Evans ON 202: Comm: EO Cochrane Escort:LtCdr PW Burnett
Strength
Leuthen: : 21 U-boats	ONS 18: 27 ships: 8 escorts: ON 202: 38 ships: 6 escort: SG 9: 5 warships
Casualties and losses
3 U-boats	6 ships: 3 warships

ONS 18 and ON 202 were North Atlantic convoys of the ONS/ON series which ran during the battle of the Atlantic in World War II. They were the subject of a major U-boat attack in September 1943, the first battle in the Kriegsmarine's autumn offensive, following the withdrawal from the North Atlantic route after Black May.