Assassin’s Creed 4 Black Flag Resynced Ram Ultimate Plan Location

Ram Ultimate Plan in Assassin’s Creed IV Black Flag Resynced is needed to buy the final Ram ship upgrade at the harbourmaster.

Ram Ultimate Upgrade Plan Location

Ram Ultimate Plan is looted from an underwater chest in La Concepción Shipwreck (184, 425).

For all other Plans refer to All Ultimate Upgrade Plan Locations and for everything else also check the Collectible Guide.