incidents is either catastrophic system failure or operator error. so, for example, even cases with a large doors allowing the vehicles to come on and off are either left open or not properly sealed. now, there's no indication here that it was left open, but the point being that system failure or operator error can also lead to catastrophic ferry accidents. and this type of ferry has a large open deck for the vehicles to roll in, like several driveways parallel to each other inside the ship. the rest of the ship is built with come part ms. the reason for the come partpar if the hull breached spanning more than one compartment it could have quick flooding and heel over on its side. more troubling if that auto deck