Listening to this sound while stuck in that on a boat for a week would drive me insane. It has similar effects like the sound of someone running finger nails on a chalk board to me. Horror! I get goose bumps and have a slight urge to puke! Do you also have weird reactions to sound? Talking of puke… listening to someone emptying a stomach or two makes me want to puke as well. That sound is even worse than the sound of ice rubbing against each other.