Abstract: The present invention relates to a method for controlling the fuel consumption of a ship, the ship comprising an engine and a controllable pitch propeller, wherein torque and engine speed are adjusted to correspond to an output set point value. The adjustment is such that the engine is operated in an operating condition with an engine speed and a propeller pitch of the controllable pitch propeller such that the fuel consumption of the ship is brought and/or held within a desired fuel consumption range.

Abstract: The present invention relates to a method for controlling the propulsion of a ship (10). The ship (10) comprises an engine (5) and a controllable pitch propeller (7), wherein torque and engine speed are adjusted to correspond to an output set point value. The adjustment is such that said ship (10) is operated in an operating condition with an engine speed of said engine (5) and a propeller pitch of said controllable pitch propeller (7) such that the fuel consumption of said ship (10) is brought and/or held within a desired fuel consumption range. The method comprises: —determining a NOx value indicative of a NOx content in the exhaust gas produced by said engine (5) and —reducing the torque of said engine (5) upon detection that the NOx value exceeds a NOx threshold value.

Abstract: The invention relates to a method for controlling a propulsion effect of a ship in order to enable efficient fuel consumption. The method includes reading a set point value for speed from a first input device, reading a set point value for fuel consumption from a second input device, and controlling the propulsion effect to a set point value resulting in the lowest fuel consumption.

Abstract: The present invention relates to a method for controlling the fuel consumption of a ship, the ship comprising an engine and a controllable pitch propeller, wherein torque and engine speed are adjusted to correspond to an output set point value. The adjustment is such that the engine is operated in an operating condition with an engine speed and a propeller pitch of the controllable pitch propeller such that the fuel consumption of the ship is brought and/or held within a desired fuel consumption range.