Dig shallow canals to extend or connect bodies of water. - Adds waterfill - Players and vehicles are slowed down in shallow water
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Map generation and terrain modification.
Things related to oil and other fluids.
How to cross railway and canals? Is there a bridge mod or how do you do it?
I would recommend the Beautiful Bridge Railway mod: https://mods.factorio.com/mod/beautiful_bridge_railway_Cargoships