Onkel Neal when I started writing the Steel Sharks Gwx Campaign I used the following sources for info on Convoys ect
http://www.convoyweb.org.uk/
https://warsailors.com/convoys/index.html
for the biggest Convoy Battles and most successful Uboat Patrols
https://www.uboat.net/ops/convoys/battles.htm
I told ya I was a Uboat n Submarine nutjob its all to do wid my date of birth
3/9/65
same day Limeyville declared war on Germany in 39 and the same year his nibs Winston Spencer Churchill Passed away