subject: Roll on Roll Off Yacht Transport Method [print this page] With Roll-on Roll-off method of ocean transport the shipping price isbased 100% on the size of the yacht or boat.It's not based per unit or the just the length or the heigh of the Yacht or Boat - the total size must be calculated. You're pretty much paying per each cubic foot or cubic meter of your shipment. So the bigger your shipment is in total size - the more it's going to cost you to ship it via roll-on roll-off service.