Cooler for marine stern drive

摘要

Cooling apparatus for the stern drive unit of a marine inboard-outboard drive system, the cooling apparatus being of the kind making use of the ram effect and having an intake tube carried on the stern drive unit with its intake end in the water. The tube has an intake port held below the water surface for accepting water by the ram effect while the boat is moving forward. The water is carried by the tube to a system for delivering water from the intake tube to the stern drive unit for cooling it. According to the invention the bottom of the intake tube is closed and the intake port is formed closely adjacent to the bottom of the tube in a selected part of its wall facing forwardly when the boat is in forward motion.