Funatsu (船浄 Funatsu?) is a battle stage found in Samurai Shodown IV: Amakusa's Revenge, released in 1996 by SNK for Neo Geo and home systems. Sometimes during Arcade mode this is the first stage of the "east route" in the way to Amakusa Castle. A remake of this stage is found in the prequel game Samurai Shodown V.
During the stage intro the opponent is standing on a cliff with the moon behind he/she. Then the battle unleash in a beach during the night. In the near front there is a rock on the sand, and a little rocky system at the left of the beach. On the right side of the stage there is a hill with some green branches. Such hill continues towards the distance beyond the beach; on the top the Amakusa Castle can be seen emanating a evil red energy. The waves of the sea hit continuously on the beach and rocks, while the moon illuminates the sea, sky and clouds. Some of such clouds cover the moon for some seconds and the whole environment looks a little darker.
During the decisive moments of the match the stage turns blue completely, and only a little portion of the beach can be seen.
Funatsu theme is an ambience track called "Seaside" (三ノ宮 San'nomiya?). No arranged version was made.