Worst one here was off of Scottland. 500 metres from shore I spotted a horde of screaming men in kilts wielding longswords running into the water for my boat. I crash-dived and they went after me and almost managed to slice open my pressure hull.
They at last gave up on me when we had submerged all the way down to 300 metres.
Seriously, though, the worst one was the one that required me to go from La Spezia almost all the way to Gibraltar. Needless to say they took me down
.