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.
I had the occasion where I need to jump between ships. Please allow SHIFT-ENTER to work if two ships are close enough. It will help getting ships on water ways fixed when they have No Path (being able to drive out there, jump onto the tanker, and then manually pilot it to see where the problems are).