 An operator controlled the relative speeds of the winches, providing guidance.Such systems were used for coastal defence of the British homeland and colonies from 1887 to 1903 and were purchased by, and under the control of, the Army as opposed to the Navy.Speed was about for over 2,400 m.

The Howell torpedo used by the US Navy in the late 19th century featured a heavy flywheel that had to be spun up before launch.