Ventilation control system

Abstract

An aeration control system and method for a marine vessel. The system includes a valve configured to be coupled to an aeration conduit of a marine vessel. The valve is configured to be responsive to a valve control signal having a first value so as to be open and to provide air to the aeration conduit, and the valve configured to be responsive to the valve control signal having a second value so as to be closed and not provide air to the aeration conduit. The aeration control system also includes a control device, electrically coupled to the valve, that provides the valve control signal to the valve

What is claimed is: 
     
         1 - 37 . (canceled) 
     
     
         38 . A trimming control system for a marine vessel comprising an engine and an articulating propeller, the trimming control system comprising:
 an actuator coupled to the articulating propeller; and   a control device operative to provide, based at least in part on at least one signal sensed from the engine, an actuator control signal to the actuator,   wherein, in response to the actuator control signal having a first value, the actuator is configured to actuate the articulating propeller to a first position, and   wherein, in response to the actuator control signal having a second value different from the first value, the actuator is configured to actuate the articulating propeller to a second position different from the first position,   wherein the at least one signal sensed from the engine comprises an engine load signal.   
     
     
         39 . The trimming control system of  claim 38 , wherein the at least one signal further comprises an engine revolutions per minute (RPM) signal.