Large number of enemy submarines active in the West Atlantic Ocean according to the U.S. Joint Intelligence Committee. Daily summary dated 31 August 1942

An item reported that on 30 August it was believed that around 58 enemy submarines were active on the West Atlantic Ocean (from the longitude of the Azores westward). Most of the submarines were in the areas to the westward of Newfoundland and Nova Scotia, the Caribbean (included the Straits of Florida) and within 1,000 miles to the east-southeastward of Trinidad. In the area to the eastward of Newfoundland and Nova Scotia were 16 submarines eastbound. Just a few of the westbound submarines were located in the past few weeks were active in the US North and middle Atlantic coastal waters.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 264 dated 31 August 1942.