These self-propelled vessels have a length up to 24 m and a width between 8 and 12 m. Multicats are equipped with hydraulic cranes that are used for lifting heavy loads and for assembling the floating pipelines. For moving the heavy anchors of cutter suction dredgers the workboats are equipped with winches.They also have a sweep installation to execute sweeping works.

Multicats can also be deployed for transporting fuel to the dredgers. To meet the most severe standards, the last generation of auxiliary vessels is equipped with double-walled fuel tanks.