Canoe and War Canoe[sic] hitpoints increased.
—In-game description

Rawhide Covers is a Big Button technology in Age of Empires III: The WarChiefs that is unique to the Haudenosaunee and can be researched at the Dock once the Commerce Age is reached. Once researched, it increases the hit points of warships (despite the description saying it affects Canoes and War Canoes) by 20%.

With the Industrial Age Old Ways Home City shipment, the cost is reduced to 400 food, 200 wood. Uncharacteristically, the food cost is not reduced.

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