Boatswains chair.......If I recall, from my USCG Training,a chair is only used when both ships are under power. It would be ill advised to try that. One ship bobbing in who knows what direction and the one with power trying to stay with it.....I think not......Grandma would more than likely drown when the lines broke. Kerry. I totally agree. Rob.....do you want to see Grandma drown?