You know how to take care of cockroaches on subs, right?
We take her down and raise the snorkel, turn on all four air breathing diesel engines in a high sea state.
The first time the head valve sticks on the main induction valve your boat will be pulling close to 16# lbs of pressure ... all of a sudden you feel your back door opening ... coming up to meet your throat, because those engines have to get their air from somewhere, even if it's you ...
Varmits leave in a hurry in those conditions ...
