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BackArrowGreen.png Back to the Tile improvements in Civ4

An Offshore Platform is a tile improvement that can be built upon the discovery of Plastics. It improves water-based sources of Oil.

Civilization IV Improvements [edit]
Camp Cottage (Hamlet Village Town) Farm Fishing Boats Forest PreserveB Fort Lumbermill Mine Offshore Platform Pasture Plantation Quarry Roads and railroads Watermill Well Whaling Boats Windmill Winery Workshop
B Added in Beyond the Sword