A range of extreme heavy duty subsea centrifugal slurry pumps for use in relation to deepsea drilling, mining, dredging and similar applications. Through state-of-the-art design, engineering and materials, these pumps generate up to 250 meter differential pressure in a single unit, while having capability to pump large rock partickles. These pumps come with tailored slurry single or dual mechanical seals, and can even come without any dynamic seals exposed to the sea («zero discharge»). Typical capacities range up to 600 m3/hr and they can be used on the deepest ocean floors. Pumps can be mounted in any direction and comes with either hydraulic og electric drive.