Motion analysis of a Semi-Submersible Crane Vessel at Inconvenient Draft: A flooding Tank approach

Conventional computer programs based on radiation-diffraction theory are not able to predict the motions of a semi-submersible crane vessel in case the pontoons are only slightly submerged. Cause of the erroneous results are non-linearities like breaking waves on top of the pontoons and emergence of the pontoons itself. Objective of this thesis...

Mathematical modeling of free-flooding anti-roll tanks

One way of stabilizing a ship is by anti-roll tanks. There are three kinds of anti-roll tanks: the free-surface, U-tube and free-flooding tanks. Of these the free-flooding anti-roll tank is the least known and applied. The reason is that the performance of these tanks is reduced due to a momentum drag penalty incurred at forward speeds. This...