I'm in the Royal Canadian Navy (RCN) - most of my career has been on submarines. I work in an office at the moment and my Pelikan is safe. I won't be going back to submarines as there is no position for my rank and occupation. However, it got me thinking though that submarines is a BAD place for fountain pens. In Canada we operate diesel electric submarines that require "snorting", this involves brining air through a mast into the submarine and exhausting out another. If the masts happen to dip below the surface a ball valve shuts the air intake and the air is then sucked into the diesels from within the submarine thus causing a back pressure. In a nut shell, never mind flying, on a submarine a fountain pen would not react too well when there is a back pressure!
Any other Navy or Military people out there?
Gary