The Arnold Hague database of DS convoys: The DS series consisted of small numbers of troop/ military transports that sailed from the Clyde to Iceland carrying troops and military supplies including aircraft destined for Russia. The series started in April 1941 and ran throughout the war at approximately monthly intervals, the troopships and merchants returning in the complementary SD convoy of the same number.
Note that DS.13 did not sail but was renumbered DS.12B.
DS STATUS
Convoys
71
Ship Entries
91
Escort Duties
148