Biggest PNGs Barge docked by Nawae Construction in Alotau

Biggest PNGs Barge docked by Nawae Construction in Alotau

In middle of January 2016, vessel DB Ayios Georgios, is 94 x 23 m an fully equipped construction barge with crane, accommodation, office and workshop facilities pulled to land with hauling airbag systems. It is owned by Nawae Construction, the premier marine & civil engineering company, operating in Papua New Guinea and the Solomon Islands. This is the first time for vessels docked with marine airbags in PNG.

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Invited by Nawae Construction, Evergreen maritime offered full set of docking system for this barge, from equipment supplying to on site consultant and operations. After further discuss with our clients and investigation of site, our professional marine engineering team developed one efficient plan which is making utmost natural beach as the docking slipway. To satisfy the big pulling force requirement, bulldozer and excavator are deployed to work together with winches to haul the barge.

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Natural beach is full of small stones, airbags should roll on over them while carrying the weight. It is not the ideal condition in fact but good airbags can tolerate it in a way. The coordination of winch, excavator and bull dozer is also a difficulty of the project, pulling angles and speeds of those different facilities must be controlled accurately.

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The first two marine air bags were inserted underneath barge bow at about 50 cm deep water. They crunched the gravel and rolled onto the ramp by the winch pulling. Then more roller bags were added when barge was pulled further. Step by step the vessel came out of water completely. At last people placed support blocks and deflated airbags to rest barge on blocks.

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