[Guild] Great Ocean-drenched Plywood

Description

Sailing across the Great Ocean always comes with its share of risks. Strong currents, harsh winds, and a vast amount of sea monsters pose challenges to adventurers.
Among them, it's said that with the loot from the Nineshark who feed in Margoria, one can craft a special kind of plywood.

※ You cannot obtain this knowledge through Processing.
※ Talk to Duncan, the Guild Military Supply Manager in Velia, to obtain this knowledge entry.