Abstract: An outboard propulsion unit supporting system by which an outboard propulsion unit is vertically movably supported to the rear end section of a boat. The supporting system is comprised of a pair of slit brackets installed to the rear end section of the boat. Each slit bracket is formed with a generally vertically extending slit in which a guide roller rotatably secured to the side of the propulsion unit is movably engaged. The boat is provided at its transom with a pair of thrust rollers on which a pair of generally vertically extending guide rails formed on the propulsion unit side are detachably contact, respectively. Additionally, a tilt cylinder is provided between the boat transom and the propulsion unit side thereby to raise the propulsion unit generally vertically.

Abstract: A system for supporting an outboard propulsion unit to the transom of a boat. The system is comprised of a pair of transom brackets which are fixedly secured to the boat transom and positioned spaced from each other to support the outboard propulsion unit. A pair of deflector side plate sections are provided to be respectively integral with the transom brackets, and extend downwardly and rearwardly relative to the boat transom. Additionally, a deflector bottom plate section is provided to connect the lower end portions of the deflector side plate sections. The deflector bottom plate section extends rearwardly relative to the boat transom and positioned between the boat and the outboard propulsion unit. The deflector side and bottom plate sections constitute a deflector for regulating backward water flow from the boat transom, thereby preventing generation of water splash.