16, 17K lbs??? Ha-ha.
Maybe a 35'CDR; but seriously - iffin' my 37' CC Riviera welded in tin (aluminum) weighed in around 20K (fully fuelled/watered/crappola'ed - how do I know; well, that what the crane driver's meter read) - no 40 yr old, water-logged (spelled - "o-s-m-o-s-i-s" dudez) tipz the scales at a penny less than 25K lbs.
Re-calculate!
(weuseacranebecausethearmymarinanolongerhasaboatliftcranedockthatisnotcondemnedsheesh)