On the motor yacht M/Y “Alexandros”, we carried out the removal, cleaning, and resealing of the joints surrounding the vessel’s glass surfaces. The existing sealing materials were carefully removed, allowing the joints and bonding surfaces to be thoroughly cleaned and properly prepared. A new marine sealing system was then applied, with particular attention given to uniform application, clean joint finishing, and the restoration of watertight integrity. This work helps protect the yacht’s glazing against potential water ingress and supports its reliable performance in demanding marine conditions. The project was completed at Agios Kosmas Marina in Athens, Greece.