Tuesday, May 9, 2017

Heavy Lift Freight Experts Move Giant Ship Unloaders

Tilbury to Netherlands Shipment Proceeds Smoothly
Shipping News Feature
UK – NETHERLANDS – Hansa Heavy Lift (HHL) has successfully transported two giant ship unloaders, each weighing 870 metric tonnes and measuring 28m x 38.5m x 58m, from Tilbury to Rotterdam. The move was complicated by the fact that the heavy lift specialist’s engineering team only had 28 year old handmade drawings of the two units to work with as they prepared for the project, which was carried out in stages on two consecutive voyages aboard HHL Tokyo.

“This was a uniquely challenging operation whereby we had very limited data available in the planning stages, including no precise weight or centre of gravity (COG) information due to the age of the units,” said Emek Ersin Takmaz, Head of Projects, Engineering Department, HHL.

“Further, these cranes were not designed to be lifted, mandating a complex lifting arrangement which required specialist engineering expertise. HHL overcame all these obstacles after undertaking a series of detailed analyses and careful calculations conducted by our in-house team of engineers.”

The units were loaded at Tilbury Power Station, which is situated on the River Thames and has a tidal range of 6 metres. This meant that during low tide the water depth was insufficient for the HHL Tokyo. In order to overcome this issue, a spacer barge had to be used inbetween the vessel and the pier.