Human-powered watercraft are watercraft propelled only by human power, instead of being propelled by wind power or an engine.
Above: sweep-oar rowing a coxed pair Below: amphibious bicycle 'Cyclomer', Paris, 1932
Hand-operated cable ferry
A hydrocycle is a bicycle-like watercraft. The concept was known in the 1870s as a water velocipede and the name was in use by the late 1890s.
Human-powered watercraft
…Amphibious cycle Hydrocycle Pedal-powered kayak…
Water velocipede, c. 1877
Man operating water tricycle, probably early 20th Century
A Hydrobike brand hydrocycle
Modern pedal catamaran with propeller drive (Germany, 1999).