To provide a solar panel and an economical energy propulsion outboard motor which can be manufactured at low cost based on a new technological theory.

Storage rooms for the outboard motors using economical energy as motive power are provided on both hull side surface sterns for a giant marine vessel, a giant tanker and a gorgeous passenger boat, and the storage rooms are closed by lowering a rising and lowering steel plate 3 when they are not used. The rising and lowering steel plate 3 is raised, the outboard motors hung down on stainless round rods are thrusted and pushed out of a hull by a hydraulic system, the outboard motors are made to very urgently change their directions right and left by 90 while they advance by a stern screw and the second propulsion motive power economical energy motive power outboard motor and a high speed direction change in the forwarding direction is carried out by the power of two units of the outboard motors at abrupt turning.