Breakbulk shipping line Hansa Heavy Lift has transported two giant ship unloaders from Tilbury in the UK to Rotterdam in the Netherlands.
The unloaders each weighed 870 tonnes and measured 28 meters long, 39 meters wide and 58 meters high. The transport of the units was completed in two phases and based on 28-year-old handmade drawings of the unloaders.
“This was a uniquely challenging operation whereby we had very limited data available in the planning stages, including no precise weight or center of gravity information due to the age of the units,” said Emek Ersin Takmaz, head of projects at Hansa.
The units were loaded at Tilbury Power Station, on the River Thames and a spacer barge was used to float out to the Hansa’s heavy-lift vessel HHL Tokyo due to tidal levels. Engineers also undertook a motion response analysis, using global wave statistics seasonal data, to assess the maximum motion induced forces acting on the cargo during the voyage.
Hansa operates a fleet of 17 multipurpose heavy-lift vessels with a combined lifting capacity of up to 14,000 tonnes. The firm specializes in the transportation of heavy-lift and project cargoes, with a particular focus on the subsea oil and gas market as well as the offshore windfarm sector.
Photo: the ship unloaders weighed 870 tonnes each. Credit: Hansa