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Bow thruster analysis by CFD calculations

AuthorsFerrari, V., Gornicz, T.
Conference/JournalMARIN Report 137
Date31 Oct 2023
MARIN invests much time and effort in improving simulation methods for manoeuvrability predictions. Ensuring that ships can operate safely in harbours is crucial in the design process.

In 2023, MARIN helped design a 220-metre-long ferry built by Hyundai Mipo Dockyard and operated by KiwiRail. One of the main requirements was that the ship must be able to safely perform crabbing manoeuvres in severe weather conditions. Usually, the prediction of the crabbing capability for newly built ships is based on model test campaigns, where a model of the vessel performs crabbing manoeuvres in multiple conditions, with varying distances to the quay, water depths and power settings.


Contact person photo

Victor Ferrari

Team Leader Cruise & Ferry | Senior Project Manager Manoeuvring

Tomasz Gornicz



In this project, Hyundai and MARIN decided to go one step further by combining towing tank experiments with modern CFD calculations. Through computer calculations, MARIN analysed the flow around the ferry when crabbing. Among the many critical hydrodynamic elements that affect the manoeuvring ship, the focus was set on analysing interactions between the bow thruster, hull and quay, as these are the driving elements during a crabbing manoeuvre.
MARIN Dynamic pressure distribution on thruster grids and propeller blades

Dynamic pressure distribution on thruster grids and propeller blades