I remember I had just got out of the port of Dover on my first patrol with Alberich on my sub and after 15 or so minutes I had four V & W's all around me and I could hear the low ping (close but not close enough my friends!). I knew they were close when I listened for them on my hydrophone. I could even hear them while slowly sweating it out in my command room. Danke Alberich!
