CONTROLABLE PITCH PROPELLER FOR TRAWL FISHING BOAT

摘要

The propeller optimally varies a propeller pitch angle according to work charateristics of the trawl ship by a simple button operation. The propeller reduces a fuel consumption, and simplifies a structure. The pitch propeller comprises solenoid valves (e,f) connected to control buttons (A,B,C,D) of a control panel (a); a main engine (8) making possible a CPP control without equipping a microprocessor and a control valve; a reverse rotational clutch (7) equipped between the main engine (8) and an actuating unit (6).