This dive site is the wreck of the Japanese battleship Mutsu, a historically significant vessel, being the only sunken battleship of the Japanese Navy accessible in Japan. Located near Katsura Island in Yamaguchi Prefecture within the Seto Inland Sea, the Mutsu is an enormous structure, measuring 224 meters long and 34 meters wide. Divers can explore its vast remains, which lie in varying depths, offering different perspectives on this monumental warship. The wreck provides a unique opportunity to delve into naval history underwater.
The wreck has become an artificial reef, attracting various marine life. Throughout the year, divers can encounter schools of mackerel and yellowtail swimming around the immense structure. While specific coral types aren't mentioned, wrecks typically foster a diversity of soft corals, sponges, and other invertebrates that provide shelter and food for smaller fish species.
The best time to visit the Mutsu wreck is likely during seasons with calmer conditions and better visibility in the Seto Inland Sea, though no specific season is provided. This site is highly recommended for divers interested in wreck exploration and naval history. Freedivers can also enjoy the shallower parts of the wreck, with depths around 10 meters, while scuba divers can explore the deeper sections down to 29 meters. Always be aware of potential currents in the inland sea.
