Marine hydraulic pumps are used to generate hydraulic power for various applications on a vessel. Hydraulic systems are widely used in ships for steering, winches, cranes, bow thrusters, and other equipment that requires precise and powerful control These pumps are typically powered by the vessel's main engines or separate hydraulic power units. They pressurize hydraulic fluid, which is then transmitted through hydraulic lines to operate hydraulic cylinders and motors.

Keel cooling is a method of cooling a vessel's engines or other heat-generating components using the surrounding seawater. Keel cooling pumps circulate seawater through a network of pipes that run along or through the keel of the ship to dissipate heat.As the water passes through these pipes, it absorbs heat from the engines or equipment, and the heated water is then discharged back into the surrounding sea.