Adds massive cargo ships to the game, that function similarly to trains. Also adds deep sea oil, oil platforms, tanker ships, train bridges and other water based content.
When you mine the bridge while it is open to let a ship pass, 3 "bridge_crossing" entities are left behind which cannot be removed. Those entities also prevent you from placing a bridge at the same position again.
while i havent looked into it (and also it might be some time til i get the chance) that is what i allready assumed was happening. a train track cant be destroyed if something is ontop, so i will have to make the bridge unminable, as long as ships or trains are "ontop". but thanks for the clarification!
