My son just took an offshore survival course in anticipation of doing the Pac Cup (Double handed SF to Hawaii) next year.. cost around $700. One weekend with an entire day in the water.. he thought it was worthwhile.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)