British merchant ship Waterloo sunk by enemy aircraft according to the War Cabinet Weekly Résumé No. 45 of the Naval, Military and Air Situation 4-12 July 1940

An item reported that on 10 July the British merchant ship Waterloo, tonnage 1,905 tons, loaded with ... , underway from ... to was sunk by a bomb dropped by an aircraft off Smith’s Knoll. Crew landed safely at Yarmouth, England. Part of convoy.

Source

National Archive UK. CAB-66-9-42.