Abstract: A boat includes a hull, topsides with a cockpit therein. A top is provided having a perimeter contoured for engaging a topsides perimeter in a closed position and providing a canopy for the topsides in an open position. Linear actuators are provided for moving the top between the open and closed positions along with a motor mechanism for operating the linear actuation. A panel moveably attached to the top enables operator entry and exit from the boat with the top in the closed position through an access provided by the panel.

Abstract: A boat propeller includes a hub having a front, back, and an axis of revolution extending therebetween. A plurality of blades provide and extend from the hub between the front and back. Each blade includes a surface adjacent of the hub disposed at an oblique angle to the hub axis and a blade tip having an adjacent surface forming a dihedral angle with a surface adjacent to the hub extended on the forward camber only. The surface adjacent to the blade tip is inclined at a greater angle to the hub axis than the surface adjacent to the hub. Each blade includes a trailing edge extending radially from the hub with each trailing edge being substantially straight and a tip is provided joining the trailing edges at approximately a 90° angle. An arcuate leading edge is provided between each blade tip and a hub and a flange is disposed on each blade tip and extends parallel to the hub axis toward the hub back.