• Immediate fuel savings from underwater propeller cone fin installation

    Immediate fuel savings from underwater propeller cone fin installation


    Over the last few months Hydrex installed different types of propeller cone fins on bulk carriers, container vessels and tankers. These operations were carried out in Belgium, Panama, Spain, Denmark and South-Korea and can be performed economically almost anywhere. As a result of the underwater operation an owner can instantly start benefitting from the fuel savings a propeller cone fin brings. He does not have to wait until the next scheduled drydocking for the installation.

    Propeller caps like these can recover energy loss of a propeller hub vortex in the propeller’s slipstream. This decreases fuel consumption from 3% up to 5% and reduces cavitation on rudders and hulls. Propeller cone fins can be tailor-made for any size and make of propeller, on both new build or in-service vessels.

    On-site installation prevents a long wait for fuel saving benefits

    Regardless the type of cone fin, Hydrex carries out these operations following the same procedure. A team of our diver/technicians mobilizes to the vessel’s location. After a preliminary inspection the divers remove the propeller cap and clean the area where the device is to be installed. They then lower the spinner cone into the water and position it on the propeller. Grease is inserted in the space underneath the propeller cone for lubrication and finally the bolts are put on torque and secured with wire. If needed, the Hydrex team works in shifts around the clock to finish the operation as quickly as possible.

    The owner of the vessel can start enjoying the fuel savings the propulsion improving device creates right away. Having to wait for the next scheduled drydocking to have the propeller cone fin installed can lose  him up to two years of fuel savings. In contrast, he will have earned back the cost of the underwater installation in about eight weeks. The savings are considerable.