The vessel has four hydraulically operated side doors that ensure the controlled release of the rock from the vessel's bays. Side stone dumping vessels are capable of transporting and installing a wide variety of rock gradings, ranging from gravel to rocks weighing up to 800 kg.

The Jan Steen is a multipurpose construction vessel, suitable to be deployed for a variety of tasks, such as side stone dumping, rock installation by flexible fallpipe, cable lay and diving support activities. The vessel is fully self-supporting, has an accommodation for 45 persons and a maximum loading capacity of 1,750 tonnes.