Zhang, YifuYifuZhangHosseinzadeh, SaeedSaeedHosseinzadehBanks, JosephJosephBanksHudson, DominicDominicHudsonTurnock, StephenStephenTurnock2024-04-162024-04-162024-04-048th International Symposium on Marine Propulsors (smp 2024)978-82-691120-5-4https://hdl.handle.net/11420/46470Due to the decarbonization challenges within the maritime sector, there is an increased focus on improving vessel propulsive energy efficiency. Wind-assisted propulsion is able to reduce emissions through retrofit systems that generate thrust from the wind. Wind-assisted vessels are subjected to increased aerodynamic forces and develop an inherent leeway and rudder angle to compensate for the lateral forces and yaw moments. Therefore, a good understanding of the impact of leeway on a ship’s propulsive efficiency is vital for the design and operation of windassisted ships. This also contributes to a better insight into the physics of hydrodynamic interaction between the hull, propeller, and rudder while manoeuvring in seaways. In this paper, the KRISO Container Ship (KCS) model scale is chosen for numerical computations under three different leeway angles ( −10°, 0°, +10°) with a series of rudder angles. It is found that KCS’s drag and lateral forces increase with the increment of rudder angle in non-zero leeway conditions, and the rotating propeller intensifies this increasing trend. Rudder forces are mainly dependent on the upstream propeller performance and higher propeller loading tends to shift the rudder lift.enhttp://rightsstatements.org/vocab/InC/1.0/Wind assisted shippingleeway anglehull-propeller-rudder interactionComputational Fluid Dynamics (CFD)Engineering and Applied OperationsConference Paper10.15480/882.933310.15480/882.933310.15480/882.9294Conference Paper