Prevention of cavitation

A system for reducing cavitation at a surface that moves relatively with respect to a first fluid, the system comprising:

• a degasser configured to at least partially degas a second fluid, wherein the second fluid is periodically directed to the surface using a pulsed flow to form the boundary layer;
• a reservoir in communication with the degasser and configured to house an at least partially degassed second fluid, the reservoir having an outlet that is arranged for directing the second fluid towards the surface;
• wherein the system is configured such that directing the at least partially degassed second fluid towards the surface forms a boundary layer at the surface, whereby the boundary layer at least partially increase a negative pressure required to initiate cavitation at the surface so as to reduce cavitation when the surface moves relatively with respect to the first fluid.