MaxRavenclaw’s More Coastal Defences
Based on this: https://steamcommunity.com/sharedfiles/filedetails/?id=2521588509
It’s a more toned down version of the above, a lite version if you will. It removes modifications to the Level 2 Port, limiting improvements to the Level 3 and 4 ports.
Basically this variation of the mod allows rushing invasions early on, because giving coastal defenses to Level 2 ports makes it difficult to land quick invasions in the first turns before you build up an army to damage the ports sufficiently.