[Chardok]

Just a quick thought
:

I've noticed that even the most tenacious ship will give up using the following technique: (note deep water only, right?)

I blastoff at flank, then dive to about 90 feet and all stop. Then I sit there all day. for the whole day. As soon as the red lights come on, up to scope depth, check it out, then surface and breathe the fresh, clean air of freedom.

I read a story somewhat like there....here I think. Where the sub only ever surfaced at night and it was a million degrees hot while submerged and stuff...sounded pretty miserable.