thanks for the insight Did you miss ordered depth big-time, or just a little ?

Pardon me if I repost a story from a friend who was a sub vet:

He was sleeping in his bunk when awakened by a big down angle.

The groans of the hull grew louder. Off-duty, he and his shipmates had the luxury to picture how the sea might kill them in the next five minutes. They could do nothing but wait as the ship plummeted. Vern remembered the tension.

A locker next to Vern's head, its walls deformed against the straining pressure hull, blew its door--POW !

Obviously they came back up--but the way Vern told the story, he must have thought he'd died that instant.