Abstract: An autonomous and semi-submerged station for cleaning the hulls of pleasure craft, comprising a floating ballasted pontoon or a wharf and principally a mobile cabin, ballasted, in unbreakable transparent material, with an open roof, having on its forward wall (40) two openings provided with sealed rotary bearings (1) by which enter and exit, while sweeping, tubes (2) for water under pressure fed with fresh or salt water through an autonomous pump. The work is performed under visual surveillance. Secured to the cabin, a mechanism of pulley and externally grooved wheels, controlled from the interior of the cabin permits the longitudinal displacement on the tubes secured to the floating pontoon or to the wharf. The externally grooved wheels enclose the tubes that mate the cabin to the floating pontoon or to the wharf.