Hansa Heavy Lift has transported six rubber tyred gantry (RTG) cranes, each weighing 135 metric tonnes and measuring 28.9 by 11.3 by 26.6 m, from Japan to Turkey.
All units were loaded onto the vessel HHL Kobe at the port of Saiki in southern Japan, with two of the cranes being discharged at the port of Gebze and the remaining four at the harbour of Gemlik, in Turkey.
“This was an unusually high number of RTGs being transported on a P2-800 vessel, compelling us to extend the deck as well as ensure there was sufficient space between the units, so that all cargo could be accommodated safely,” said Mohammad Abbas, project engineer, Hansa Heavy Lift.
The deck extension included six metres to the aft side and three metres to the starboard side, as well as a total of 11 tween deck pontoons being stowed on deck to accommodate all units.
The strength of the extension tween deck panels was verified through a finite element analysis, to demonstrate that the overhung deck was sufficiently safe and durable enough to support the cargo.
Hansa Heavy Lift specialises in the super heavy lift 900+ metric tonnes industry, delivering engineering solutions to customers, particularly in the subsea, oil and gas, and the offshore wind farm sectors.