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.
How to reproduce:
1. Enable SE2+K2 (not sure which one affect it; I think SE2)
2. Mouseover prdoction increase tech
3. See no sea platform in dropdown hint window
UPD: it's probably only visual but, I see bonus bar on them after research
