The report presents a comparison study of a multi-purpose construction with a V-shape hullform versus one with a conventional (U-shape) hullform. This research considers multi-purpose construction vessels which have the capability to perform heavy lift and pipe lay operations. These different functions typically result in contradicting design requirements. In general heavy lift crane operations require a large breadth to provide sufficient stability. However, during other operations (such as pipe lay or light lifts) the high stability results in relatively short natural heave and roll periods with high accelerations. In fact, this kind of operations would benefit from a reduced breadth. In an attempt to improve the operational performance of these type of vessels, heavy lifting equipment specialist Huisman Equipment BV has proposed a new hullform. In this research the properties and operational performance of the multi-purpose construction vessel with a V-shape hull and one with a U-shape hull are compared. In order to perform this comparison, two vessel concepts have been designed and studied for the same operational requirements.