I'm not aware of all the long-term problems of salt-water boats (problems with corrosion, etc.) but I am aware that smoke, heat and CO alarms, operated by 9-volt alkaline batteries, that are very loud, are also very cheap. I wouldn't be surprised to be told that the Conception could have had a dozen of these spotted around the boat for $200 or so. Of course, they'd have to replace the batteries every six months, but the alarms themselves will chirp to tell when that's needed. I really don't understand why these are not on *every* boat with enclosed cabins of *any* size. When you're talking about a boat like the Conception, probably worth hundreds of thousands of dollars, with people sleeping aboard, the need seems blindingly obvious.