Description of the work:

Salvage of sunk dry dock in the harbor of Lauwersoog

December 2009

Mammoet Maritime was given the order to salvage a sunken dry dock in the harbor of Lauwersoog (NL) in November 2009. The dry dock was sunk during preparatory work for transport by our customer. The dock was intended to be broken up and was to be transported to a ship-breaker's yard in Friesland.
The work plan submitted was the decisive factor in awarding the contract. The work plan took the special status of the nature area of the Wadden Sea into account and the authorities and the customer eventually chose our plan on the basis of its quality.

The 300-ton sheerleg AMSTERDAM, the salvage vessel JUMBO and the pontoon KRAMMER were deployed for the salvage. The dock was cut into three pieces each weighing 200 tons at the location. The separate pieces of the dock were then lifted off the bottom of the harbor and placed on the transport pontoon KRAMMER by the AMSTERDAM.
The pontoon loaded with the parts of the dock was transported from Lauwersoog to the harbor of Delfzijl. Here the pontoon was prepared further for inland transport to the breaker company in Friesland.

The dock finally arrived at its destination after a delay of a few weeks.

Special circumstances:
The salvage was carried out in the environmentally sensitive Wadden Sea area. The work plan was approved by the local authorities. The focus was on measures to protect the environment. The work method was carried out very successfully with limited effect on the environment.