pedal boat

or ped·al·boat

[ped-l-boht]
noun
  1. a recreational water vehicle, consisting of two pontoons with a transverse seat and propelled by a pedal-operated paddle wheel.
Also paddle boat.

Origin of pedal boat

First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018