Skip to content

Hokkaido Digital Museum

Kaiyomaru Museum

Southern Hokkaido Area Esashi Town

The Kaiyomaru, a warship of the Tokugawa shogunate, was stranded and sank in a blizzard off the coast of Esashi, Hokkaido, during the Battle of Hakodate in 1868.

In 1974, more than a century after that submergence, the shipwreck was found in Esashi Port. This prompted the launch in 1975 of Japan’s first full-scale investigation into the underwater remains. About 30,000 items, including the ship’s fittings, weapons, and everyday utensils, were salvaged from the seafloor.

This museum, a full-scale restoration of the ship, exhibits nearly 3,000 relics and panels explaining the history behind the battleship.

museum Facility information

Ubagami-cho 1-10, Esashi-cho, Hiyama-gun, Hokkaido

9:00 – 17:00 (ticketing until 16:30)


• April to October: Open every day
• November 1 to March 31: Mondays and the day following national holidays (If Monday is a national holiday, the museum closes the following day and the day after that.)
• December 31 – January 5: The year-end and New Year’s holidays


Adults: ¥500; Elementary, junior high and high school students: ¥250 (10% off for groups of 15 or more)

Official website
Wheelchair accessibility
Parking Accessible restroom Slopes Nursing room Wheelchairs available upon request
Available Available Available Available Available
arrow_upward PAGE TOP