This pattern has recently been repeated. In the last week of March, six U-boats entered the Caribbean from the northeast but during the first weeks of April no attacks were reported from the Caribbean area. Ten days after their arrival was known, three of the submarines appeared off the Florida and Georgia Coast. It seems again a fair conclusion that these enemy units came from the Caribbean after a period of rest and reprovisioning…
…During the past month the most disturbing single factor about the submarine warfare has been the fact that it has been maintained with such success. This success can be traced to several factors but the most important is the fact that it is impossible to combat the menace with forces of inadequate strength. The outlook for May is still almost as disturbing as it was at the beginning of April, though pessimism should be tempered somewhat by the recognition that ships and planes are gradually accumulating along this coast and a protective system of considerable strength has been devised for the merchant vessels in our coastal waters. …
Questions to Consider:
What causes the author to believe that enemy sympathizers are aiding the Germans?
According to the author, why are the Germans so successful?
Eastern Sea Frontier War Diary April 1942
Allied Convoy Formations
In response to the many U-boat attacks upon merchant, troop and supply ships, the Allies created convoy formations to provide needed protection. Destroyers sent deep water charges to combat the U-boats. In response, the Germans increased U-boat attacks, and devised Wolfpack attacks, using many U-boats at one time. The following chart shows the formation of Allied convoys.