Last night I was patrolling Scarpa Flo, but as I used to live near Lerwick I couldn't resist taking a trip up there, so I set a course. While speeding along on the bridge, I notice a strange dark line on the horizon getting thicker.
On the map, I zoom right down and discover there is a land mass poking out of the sea, invisible at higher zoom levels. I quickly put full reverse on, and miss grounding the sub by about oooh 20 feet or so.
How embarrassing would that have been to have to radio in?