After completion of four cutter suction dredger vessels and four hopper suction dredger vessels’ repair works just in the course of 2015, Gemak Group was awarded in September 2015 by Jan De Nul Group to undertake the mid-life refit project of CSD Leonardo Da Vinci.
CSD Leonardo Da Vinci is one of the biggest cutter suction dredger vessels of the world and built in 1985, with 129.7 meters total length, 22.4 meters beam, 33.4 meters of dredging depth, Total installed diesel power - 20,260 kW, Submerged pump power - 2,740 kW, Inboard pump power - 2 x 4,485 kW, Cutter power -5,480 kW, Propulsion power- 2 x 2,740 kW and will be one of the most modern cutter suction dredger vessels in the world after completion of the project at Gemak.
The work scope is including; complete accommodation stripping, re-insulation, re-paneling, removal & refitting and repairing of almost all dredging equipments and other heavy lifting Business critical equipments, re-conditioning works, modification works in accommodation, removal of spuds and inserting of spud pieces, major refit of deck crane and renewal of crane tracks, major steel renewal and modification works two accommodation, renewal of all accommodation area cables, all A/C system, renewal of air ducts/channels, fire alarm system upgrade, net work system cabling, renewal of telephone system, E-track renewal, and other electrical system upgrade and renewls, renewal of stainless steel, PVC, copper, hydraulic pipes, cosmetic painting of equipments, tanks and open spaces, overhauling of big cutter gearbox about 120 tons, overhauling and repair of big capacity DC motors etc.
Furthermore, one of the biggest challenging operations as shown in above pictures during dry-dock period was removal of 1200 tons cutter ladder from the Vessel, blasting interior and exterior areas, silicone paint application and refitting back.
All cutter ladder turning points, cutter ladder shafts, bearings, hinge bores etc. were repaired, overhauled and reconditioned during dry-dock period successfully.
Cutter ladder removal & refitting operation was carried out by using 1500 tons lifting capacity SPMTs during dry-dock period which are also used by Gemak Group for famous 3rd Bosphorus Bridge project segments’ transportation. All operation was successfully engineered in pin point, all assessments & calculations are done by Gemak Group’s R&D, Design and Ship Repair Engineering departments.
Dry-docking period was recently completed and the vessel is at safe berthing now for final installment, refitting and tests and currently finalizing for re-delivery.
Gemak group also completed CSD Hondius, which was awarded by Jan De Nul Group again, simultaneously with CSD Leonardo Da Vinci in September 2015 as well and project has been already re-delivered to JDN in timely good order.
Due to its extensive technical experience and competitive pricing, Gemak Group attracts all Dredger companies for especially major scope Works and since beginning of 2015 Group has repaired four projects for DEME, three projects for Jan De Nul, one project for Van Oord, one project is under repair for JDN (Leonardo Da Vinci) and one project TSHD Seine from Baggerbedrijf de Boer B.V.
Gemak will continue to be a haven for these kind of challenging projects and will striveits best to keep the premier position as the most preferred yard for dredger vessels in the region.