If they were to kill someone, it would have been by marooning them, being hanged, or keel-hauled, AKA, being dragged by a rope under a sharp barnacle-covered keel of the ship.

如果他们要杀死一个人，他们会把他们放逐，绞死，或者龙骨拖拽，也就是用一根绳子在船的尖锐的藤壶覆盖的龙骨下拖拽。