Improved Water Yields 3

Available on the Steam Workshop

This mod overhauls how the Harbor and its buildings work.

Philosophy
The design philosophy behind this mod is threefold:

1. To make coastal cities or cities with many sea tiles more balanced.
2. To reward careful district planning.
3. To reward investment over time.

To that end, base terrain yields are unchanged. Rather, building the Harbor district immediately increases all sea terrain yields by 1 food. Further investment into the district is rewarded in more valuable resources and an additional terrain bonus.

Ultimately, bare coast tiles will yield 3f/2g and ocean tiles will yield 3f/1g. Resources, on the other hand, will be very fertile. Bare sea tiles in this mod are not designed to be incredibly productive, but are balanced so that working them will still be a net gain. Well-placed harbors can provide extraordinarily large amounts of food, and well-balanced specialists can add just a bit of extra production to island cities.

Harbor Adjacency Bonus

• +2 food and +1 gold per adjacent City Center, +1 food and +1 gold per adjacent sea resource

Harbor Buildings

• Lighthouse: +1 food to all sea resources
• Shipyard: production equal to Harbor adjacency bonus, +1 gold to coast and ocean tiles
• Seaport: +1 food to coast and ocean tiles, +1 production to all sea resources

These changes replace all prior building yields.

Other Changes

• Harbor Specialists: provide +1 food, +1 gold, and +1 production
• Naval Infrastructure and Economic Union policies increase both the Harbor food and gold adjacency bonuses by 100%
• Cartography now increases Fishing Boat gold by +1 instead of +2

Compatibility
Compatible with the Summer 2017 Update
Fish Farms is compatible with this mod. Several changes are made to Fish Farms if both mods are activated:

• Fishing Boats no longer gain adjacency bonuses
  
• The additional Harbor gold adjacency bonus is removed
  
• The additional trade route gold bonus from Harbors is reduced from 2 to 1

Manual Installation
To install extract the contents of the zip file to Documents\My Games\Sid Meier's Civilization VI\Mods.