A few years ago the Maritime Pilots Institute Netherlands (MPIN) was asked to carry out practical research aimed at developing a simple method to predict wind loads on huge constructions. For practical reasons the method should not be time consuming. Some reasons for the initiative were the following. …

For the Dutch economy the ports of Amsterdam and Rotterdam are crucial. To continue the competitive positions of both ports versus foreign ports, the entrance channels to both ports have to be optimal. That said, it is however a problem. The largest ships calling at these ports have a very deep draught, …

In the nineties the Delft University of Technology (TU Delft), faculty Maritime Technology (MT), department of hydromechanics, and the RNLNC, nautical sciences department, led by professor J.A Spaans, explored the possibility of determining the coefficients from full-scale sea trials. As a starting point …