[Bosje]

i never managed it in the pacific, but i did notice that Lurker's OpMon behaves much like the old SH3 setup:

when heavily damaged and flooding in shallow waters, gently touch her down at 0 knots, once you settle on the bottom: order 'dive'

this keeps her grounded at 0 knots, you can fix all the leaks and blow ballast to come back up.

dont use time compression because that seems to cause collision damage, and dont move forward when blowing for the surface, is all

so it's already possible, depending on what damage model you run, i guess