Flow visualisation at the stern of a twin-screw vessel

The VCT method is taking us forward

Manoeuvring performance generally features too late in the design process in SSPA’s experience. Sometimes shipyards have to face costly and time-consuming last-minute changes to the design (when the IMO standards for ship manoeuvrability are not met). And what if the manoeuvring performance is “too good”? Is the rudder too big? (Resulting in resistance that is too high). The use of a new method of CFD calculations enables SSPA to offer early-stage manoeuvring predictions with much higher accuracy than before. 

By sorting out the manoeuvring issues before too much time has been spent optimising the hull lines, the newbuild project will save time and money in the design stage. SSPA’s experts also believe that this approach will lead to safer, better and more sustainable ship design. Virtual Captive Tests (VCT) is one of SSPA’s “manoeuvring tools”.