sentences:  Some older naval historians, including Hugh Lyon and John Taylor, writing in 1979 and 1969, respectively, have stated that "Prinz Heinrich" was intended for overseas service, but Aidan Dodson points out that the ship's hull was not sheathed with wood and copper or zinc layers, which would have been necessary for any ship deployed overseas where shipyard facilities would not be readily available.Dodson also noted that the ship never actually went abroad on an extended deployment.The design staff based the new vessel on the basic design of "Fürst Bismarck", but for budgetary reasons the new ship's size was reduced by about .