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Gdańsk Shiprepair Yard Remontowa S.A., delivered the huge construction of the unloading unit, named Isken, built for a German shipowner, Egon Oldendorff.

The Isken is a twin-hull floating unpropelled unloading, transshipment and loading coal combined unit. At the anchorage about 2 nautical miles off a power plant, it transfers coal from bulk carriers moored outside the pontoon under three cranes grabs, into special shallow water Hopper Self-Unloading Barges, having own self unloading conveyors which transport the coal from the Isken to the power plant's receiving pier.



The Isken is located at Iskenderun Bay in Turkey. Its cargo handling facilities are comprised of three twin-girder grab cranes arranged at the port side of its deck structure, which load in coal, via three hoppers, onto a conveyor system. The conveyors discharge the coal via a chute into a hopper self-unloading barge moored underneath the Isken deck structure, between pontoons. In case of a break down of the conveyor system, the cranes are arranged for the transfer coal directly from the bulk carrier's holds into the barge.

Cargo handling operations can be continued up to the wind of 80B and waves not exceeding 2.5m in height. For weathering severe storms, which are extremely rare in its operating area, the Isken is towed to a permanent hurricane buoy. For mooring to the bulk carrier, the Isken is equipped with mooring and breasting winches forward and aft on the main deck of its port hull. It is designed for uninterrupted cargo handling operation in its site, which is remote from suitable ship repair facilities. Thus, it can be surveyed and minor repairs can be performed, on-site in afloat condition. It's conveyors are enclosed to the extent required for preventing the escape of coal dust.

Sections of the transfer system that are open to the atmosphere, such as the loading hoppers and the ends of the chutes through which coal is discharged into the hopper barge, are equipped with a highly effective water spray system for suppressing dust. Four easy-to-exchange generator sets are installed in an engine room in the Isken starboard hull. Generator sets supply all power to cranes, conveyors and supporting ship systems, including the accommodations. On the Isken deck structure, parking positions are arranged for 3 wheel loaders and 3 Caterpillar excavators as well as for 1 spare crane grab. An adequately large spare parts store and a workshop for vehicle repairs is arranged near the parking position.



The Isken is constructed according to the rules and regulations of the Germanischer Lloyd and the pertinent regulations of Turkey as Flag State. The Isken is built also for continuous operation with supplies for 30 days fuel oil, 2 weeks provisions and waste removal every 2 weeks. It can unload bulk coal at a rate not less than 30.000 tonne per day in an environmentally friendly mode. Said rate can be achieved by three (3) 45 t SWL each grab cranes in combination with 3 hopper/conveyor systems. Furthermore, the Isken is able to unload coal from bulk carriers of up to 240 000 dwt. It will discharge coal into hopper self-unloading barges of 10 000 tonnes. For receiving coal from a bulk carrier, one of these two special barges are moored for loading in between the Isken two hulls while the second one is being unloaded at the nearby receiving jetty, prior to being exchanged for the barge being loaded at the Isken. It's conveyors will be enclosed to the extent required for preventing the escape of coal dust.

Sections of the transfer system that are open to the atmosphere, such as the loading hoppers and the ends of the chutes through which coal is discharged into the hopper barge, will be equipped with a highly effective water spray system for suppressing dust. Four easy-to-exchange generator sets are installed in an engine room in the Isken starboard hull. Generator sets supply all power to cranes, conveyors and supporting ship systems, including the accommodations. On the Isken deck structure, parking positions will be arranged for 3 wheel loaders and 3 Caterpillar excavators as well as for 1 spare crane grab. An adequately large spare parts store and a workshop for vehicle repairs is arranged near the parking position.


Copyright 2005 Remontowa