Kaiwo Maru (海王丸?) is a Japanese former training tall ship. It was launched on February 14, 1930. The sails were removed between 1943 and 1955. The ship was retired on September 16, 1989, and is exhibited in Kaiwo Maru Park, in Imizu, Toyama. 36°46′48″N 137°06′37″E / 36.78008°N 137.110139°E.