• Hydrex designs tailor-made cofferdam for underwater replacement of boss head bolts of main propeller of vessels in Slovenia

    Hydrex designs tailor-made cofferdam for underwater replacement of boss head bolts of main propeller of vessels in Slovenia

    01/09/2011

    When several of the boss head bolts of the main propeller of a ro/ro vessel were found to be missing, the manufacturer asked Hydrex to engineer a solution that would allow the replacement of these bolts on the vessel and similar vessels without having to go to drydock.

    In close communication with the manufacturer, the Hydrex engineering department designed a special cofferdam that would fit the specific needs of these operations. This was complemented with a special procedure set up by the Hydrex technical department that would make sure that all safety and quality demands could be met during the replacement.

    After the proposed cofferdam had been approved and constructed, the boss head bolts on the first of the ro/ro vessels were successfully replaced underwater by a Hydrex diver/technician team during the ship’s stop at Port of Koper, Slovenia.

    At time of writing a second vessel has been serviced in the same port and two more operations are being scheduled.

    Working closely together with the manufacturer to devise a solution for this very specific problem, Hydrex took on, organized and executed the entire job, start to finish, relieving the customer of all the hassle of coordination, planning and supervision.

    Back