Silk is a Ship Customization material found in Pirates Online by sinking ships, primarily Bounty Hunters and Warships. It is used when upgrading a pirate's ship to increase sailing speed.
Once recovered, Silk is added to the Pirate's Inventory in the Materials Pouch.
Game Note[]
In Pirates of the Caribbean: Isles of War, Silk is a rare material used to build buildings, ships and weapons. It can only be obtained from completing quests, plundering islands or sinking enemy fleets at Silk Shipwrecks.