Heat = Energy.... Energy = Heat. Not going to happen. All the energy packed on the boat is for food or people fuel. Food value is measured in calories. The same with energy.
Keeping the sailor dry and warm would to some extent lessen the need for food, but I guess heating up the cabin is not the most efficient way to deal with that problem.Another thing I wonder about is how this constant brutal noise impacts the mind. Obviously adding sound insulation would add quite a lot of weight.
Anyways one would think that doing research on these kind of guinea pigs would be interesting for a lot of reasons