Abstract: The bike-board for moving over the water on a conventional said board (10), so that movement is carried out with the help of a conventional bicycle (12), installed on the board. The stability of the bike-board is ensured by two side pontoons (34) with a beams (36 and 38) but the bicycle (12) is fixed by side straps (26). The bike-board is provided with a propellers (48) are kinematically connected to a supporting rollers (14 and 16) with the tire of the bicycle (12) rear wheel. The propellers (48) are rotated by flexible shafts (50). For steering the propellers (48) are made turning and are provided with pivot shafts (52). Turning of the propellers (48) is carried out by the front wheel with the help of a steering cable (56). The design of the bike-board so that any model of the board (10) can be joined with any model of the bicycle (12) regardless of its size and wheelbase; without any modification of both the board (10) and the bicycle (12).