Marine propulsion device including propeller protection means

Abstract From the Canadian patent

Disclosed herein is a marine propulsion device including a lower unit having a gear case a laterally, extending anti-cavitation plate extending above a propeller carried on a propeller shaft rotatably mounted in the gear case, and a pair of generally flat side fins each of which has a laterally extending trailing edge located wholly forwardly of the propeller and which either extend laterally in coplanar relationship from the opposite sides of the gear case, extend laterally in coplanar relationship from the opposite sides of the lower unit at a location between the anti-cavitation plate and the gear case, extend outwardly and downwardly in an angular relationship from the opposite sides of …