Also known as: 蟠竜丸, 蟠竜艦, 雷電丸, 雷電艦
A bakumatsu-era, British-built schooner corvette of so-called the Bakufu Navy. She became an Imperial Japanese Navy ship in 1877.
She had several other names: "Emperor", Banryuu, Banryuu-kan, Raiden, Raiden Maru and Raiden-kan.