a watercycle having , generally do - nut shape float mounted onto a frame or chassis member , and a rider &# 39 ; s seat within the hollow of the float and which can be adjusted vertically and horizontally . adjusting the seat to its highest level will cause the seated rider to submerge up to the hip , and adjusting it to its lowest level will cause the rider to submerge up to the chest . the seat is likewise adjustable forward and backward for convenient foot - reach to the pedals . the watercycle is fitted with steerable propellers utilizable for propelling and for steering .