[scott_c2911]

I believe this could be a historical reality. Some merchants, early war to about 1941, chose to sail alone as there ships were relatively fast and therefore able to make more voyages than if they were encumbered by a slow convoy system. This would lead to higher profits. However as the reality that the u-boats were an extremely effective weapon sunk in with the merchant captains they started to feel that safety in numbers with an escort was much safer. The convoys got larger and more organised too, reducing the probability of making contacts further. The enigma machine was cracked in 1941 so the Royal Navy knew exactly where a given u-boat was within a few hours, and enabled them to steer around the wolfpacks. This woukd reduce merchant contacts still further yet lead to an increase in destroyer hunter killer groups and aircraft being the only contacts. It got so bad that u-boat crews either got home alive with little to show for it or never came back. Despite it being a bit tedious in GWX I feel it accurately models the battle of the atlantic as we know it from many sources. However the lack of aircraft is strange. I would systematically go through your mod list and remove them in order to find the culprit