It is managed by Shiramine, and available at the rear deck of the Ship.
It consists in casting a net from the ship while it sails, and the fish or items will be caught in the net as it moves forward. It is even possible to catch fish if the boat isn't moving. Every now and then, you should haul up the net and pick up your catch. Among the fish and seashells, it is possible to haul up sunken treasures as well, especially on the sites of naval battles.
List of Prizes[]
Below is a list of items that can be caught while fishing listed by their location. Important items such as Interior items, Window Sets, and Snowe's Outfits can only be caught once. Ocean Rune Pieces can be caught multiple times, but they are very rares.
Wrongly listed in the guide book as "Fire Rune Piece" for the Mountain Mass Island Area, and "Ocean Rune Piece" for the Northern Ocean.
Tips[]
The Ship doesn't need to be moved around when Net Fishing, it is possible to just stand iddle, waiting a certain time and pulling back the net. In most cases it is more convenient to do it that way.
References[]
Genso Suikoden IV Official Guide Complete Edition (Japanese) (page 195)