Not first hand, but have had a couple of friends send their kids in years past.. nothing but good reviews from both parents and participants.
I believe they offer both coastal and offshore (generally Hawaii) opportunities. We see them on occasion each summer.
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)