20hp --300hp marine engine with or without gearbox set. it is suit in sail boat and yacht. sail boat , fishing boat ,etc. we can supply 20hp--300hp marine engine & marine engine with gearbox set. these productsare suit in boat , it use small size engine, such as YSAD380 (27HP/3000RPM),Y385(30HP/3000RPM), YD480(37HP/3000RPM), YD485(40HP/3000RPM),YSD490(58HP/3000RPM), Y4102(70HP/2600RPM), Y4105( ...