The manoeuvrability of ships and their directional stability can now be fully assessed by employing an in-house built, state-of-the-art manoeuvring model. The model is able to simulate simple or complicated manoeuvres by predicting ship responses in 4-DOF (Degrees-Of-Freedom). Thus the algorithm developed is based upon a nonlinear mathematical model that is able to calculate by analytical expressions and semi-empirical formulas all hydrodynamic hull reaction forces and moments, rudder and propeller loads, wind and sea current effects.
Through this model we are not only able to asses IMO’s obligatory manoeuvring criteria adopted in 2002 (Resolution MSC137 (76)), but we are also able to develop a pilot card, a wheelhouse poster and a detailed manoeuvring booklet according to IMO’s Resolution A.601(15).
At last but not least, by simulating complicated manoeuvres and by our unique expertise, we are able to objectively define reasons leading to marine accidents such as ship collisions, draw conclusions and assist scientifically a case in arbitrations.
- Predict ship responses during calm water manoeuvres in 4-DOF.
- Perform turning cycle, zig-zag, pull-out, spiral, accelerating turn and parallel course manoeuvres in deep and/or shallow waters.
- Perform all of the above manoeuvres by attributing also the effect of winds and/or currents.
- Calculate the maximum squat in confined waters.
- Asses ship stopping ability by crash stop and inertia tests.
- Asses ship accelerating performance.
- Execute complicated and custom-built manoeuvres to simulate ship’s behavior that lead to marine accidents and hence deduct valuable conclusions.