| 摘要 |
A watercraft has floats supporting a bicycle-type frame, having handlebars connected to a rudder to steer the watercraft. A chain and sprocket foot operated drive is connected to a shaft journaled to a housing accommodating a power transmission for rotating a propeller. The housing is movable between a down location, wherein the chain is retained in a tension condition to an up location, wherein the chain is in a loose condition.
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