Optimization of the unloading strategy for bulk carriers. Part II: Unloading of a ship

A mathematical model for the optimization of the unloading strategy for ships transporting bulk goods will be presented in this appear. Using the results of a previous paper concerning the unloading operation of a single hatch, the minimization of the overall unloading time is striven for by using scheduling algorithms based on a simple priority rule. For validation of this heuristic approach a mixed-integer optimization model will also be introduced, which delivers lower bounds for the unloading time by relaxing some of the integrality constraints.