'SE' (i) was a British anti-submarine patrol operation to the east of Rona island, off western Scotland, by escort destroyers based at Sullom Voe in the Shetland islands group, and by aircraft of Air Chief Marshal Sir Philip Joubert de la Ferté's RAF Coastal Command (early November 1942).

The 5,627-ton tanker War Sudra was based at Sullom Voe during the operation and the warships carried out three fruitless patrols during the first week of November. The force comprised the escort destroyers Chiddingfold (replaced by Oakley on 7 November), Ledbury and Middleton, of which the latter two had escorted War Sudra to the Shetland islands group. On 11 November 'SE' (i) was abandoned and the three warships were recalled to Scapa Flow in the Orkney islands group, which they reached with the tanker War Sudra on the following day.