That's great stuff, Peto!
As a non-submarine side-note, I would like to add that radar was also the bane of surface ships, especially the much-touted fire-control radar. It also had a tendency to break down...when the guns were fired! Seems the shock would shatter those big glass fuses and unplug connections.
Graf Spee reported this happening,
Nelson reported it while firing at
Bismarck, and U.S. battleships had it happen...a lot.
