Best Beloved has just been telling me about the Q ships of WW1 and II ( not from personal experience you understand) - fascinating. I had to look the topic up on Wiki to see what that said, and learned that the US navy also used Q ships in the Pacific... made me wonder if the IJN did as well, and whether in SH4 I might fall foul of one of these beasties....? Don't suppose so but worth an ask