Oakum

Oakum is a rare material.

Tarred rope fibre for caulking ship hulls. Bought from trade posts.

Where from

Sometimes in an Iron Chest, Gold Chest or Treasure Hoard
Sold for Pirate Medallions by: The Magpie
Iron Chests, Gold Chests and Treasure Hoards
Bought for gold at a Caulker's Yard

Spent on

Supply Barque (4)
Heavy Argosy (8)
Grand Argosy (40)
Mender (3)
Wetdeck (5)
Reaver (4)
Plunderer (4)
Thunderer (6)
Quartermaster (8)
Strongwater (40)
Convoy Flagship (12)
Dockmaster (6)
Masterwork (8)
Ironclad (5)
Sovereign (6)