Predictions and voyage simulations

Performance predictions and voyage simulations

Performance predictions combined with voyage simulations are used at SSPA to answer a range of questions related to fuel saving, CO2-reduction, CII, EEXI and fleet optimisation for wind assisted or wind powered ship. The simulations can be made very complex if high accuracy is required – or very fast and easy. The client’s needs set the level of ambition.

Performance predictions and voyage simulations are performed with SSPA’s in-house simulation software SEAMAN Winds. It is an add-on to our simulation framework SEAMAN, used for decades for ship predictions. To this we add validated data for the actual wind propulsor. Thanks to our large database of ship hulls and wind propulsion technologies, a first assessment can be carried out even without access to ship lines, model test, etc. Depending on the required accuracy, we can add ship specific data along the way. Example of effects that can be accounted for:

Effects of heel
Effects of drift
Effects of propeller unloading and drift
Rudder forces

The outcome is typically the net power and CO2-savings due to installation of a wind propulsion device and the effect on EEXI. Other questions that we can answer is how to optimise a fleet of several wind assisted vessels with respect to a common CO2-budget, and on which routes the wind assisted vessels are mostly efficient.

Many ship owners use SSPA’s Performance predictions and voyage simulations as input to their final business case and the decision on technology provider.