capstan to revolve, which in turn rotates gears that rotate the paddles, or bucket wheels. The team boat of this style consisted of two complete hulls, united by a deck or bridge, but separated far enough apart to allow the paddle wheel to be set between them. They are sharp at both ends, and can be propelled backward or forward with equal ease.

A third design for team boats was invented in 1819, by Barnabas Langdon. Langdon's turntable design permitted the horses to walk straight ahead instead of in circles. "Langdon placed a rotating