Huge losses of ships of North Russia convoy according to the U.S. Joint Intelligence Committee. Daily summary dated 5 August 1942

An item reported that in the last convoy destined to North Russsia 22 of the 33 ships were lost, just 11 reached safely Archangelsk. Of the crews of the freighters in the convoy around 70 were killed. Of the total 18 convoys to North Russia were 39 of the 230 ships sunk.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 238 dated 5 August 1942.