A submergible cleaning system

The present invention relates to a submergible cleaning system for cleaning an underwater hull surface of a vessel while the vessel is afloat. The cleaning system comprises: a housing comprising a top face and side faces having edges and an open bottom face, the edges and bottom face being arranged opposite the hull surface, and the housing further comprises: a rotary disc having a plurality of nozzles arranged around a periphery of the rotary disc, the nozzles facing the hull surface, rolling spacing devices for providing a predetermined first gap between the rotary disc and the hull surface, a suction device fluidly connected to an outlet arranged in the housing for providing a negative pressure within the housing, a pressurising device fluidly connected with the nozzles for providing a high pressure fluid to the nozzles, whereby the nozzles are adapted for discharging fluid under high pressure against the hull surface for cleaning, wherein the housing further comprises a shroud at least partly arranged between the rotary disc and the housing. The present invention also relates to a vessel comprising such cleaning system.