Various embodiments for measuring and interpreting a vessel operator's intent and control inputs are disclosed. Various stations on a vessel comprise user control devices to receive vessel control commands from a vessel operator in conjunction with associated transducer information capturing physical conditions or attributes of the operator at, or proximate to, one of the user control devices. A processor determines whether the vessel control command was deliberate, based on the physical condition or the attribute captured by the transducer. Upon determination of a valid user control input, the processor optionally performs transformation of the user vessel control command based on an operator identity and vessel environmental factors, and then sends a corresponding control command to one or more vessel physical control devices, such as a rudder or an engine.