The Arnold Hague database for the RU series of convoy: The RU series ran from Reykjavik, Iceland to Loch Ewe (and Belfast Lough in 1945; four convoys). The series began in December 1941 and continued almost on a weekly basis throughout the war until May 1945 without cancellation although RU.104 returned to Iceland.
Convoys 168
Ship Entries 1,096
Escort Duties 235