Rusalka (Russian: Русалка, Mermaid), was one of two Charodeika-class monitors built for the Imperial Russian Navy in the 1860s. She served for her entire career with the Baltic Fleet. Aside from hitting an uncharted rock not long after she was completed in 1869, she had an uneventful career. Rusalka sank in a storm in 1893 with the loss of all hands in the Gulf of Finland. A memorial was built in Reval (modern Tallinn) to commemorate her loss almost a decade later. Her wreck was rediscovered in 2003, bow-down in the mud, which has prompted a new theory regarding her loss.