Storm Force Ten is the tenth studio album by British folk rock band Steeleye Span, released in 1977 by Chrysalis Records. Until their 2013 album Wintersmith, released 36 years after Storm Force Ten, this album was the band's last production to reach the charts, topping out at 191 on Billboard's Pop charts. After Rocket Cottage, Bob Johnson and Peter Knight left the band. As there was still a contractual obligation, they invited Martin Carthy back again. Back in 1971 when Martin Carthy had joined he had recommended John Kirkpatrick but they decided on fiddler Peter Knight instead. This time they accepted his recommendation and Kirkpatrick's fiery accordion playing replaced Knight's fiddle.