Facts

alcoa

Environmental project organised by Alcoa in Mosjøen harbour.

About the project

The marine contractor was responsible for the marine works on the project. This initially involved the installation and monitoring of protective measures around the seawater intake for Alcoa's aluminium plant. Aluminium production is entirely dependent on the seawater intake to function optimally, and it was important to secure this throughout the construction period.

Furthermore, the work involved dredging and disposal of both contaminated and non-contaminated masses. Finally, we performed covering of the seabed with delivered masses, as well as riprap in selected areas. A total of approximately 30,000 m3 was dredged and just under 19,000 m3 was deposited.

We take care of the ocean – one project at a time.

alcoa
alcoa
alcoa
alcoa
alcoa

Reference project

At Sjøentreprenøren, we are proud to have completed a number of successful maritime projects that demonstrate our expertise and dedication to delivering results that meet our customers' needs.

åstfjordbrua

2018

Statens Vegvesen

Åstfjord Bridge

Construction
Dredging
Erosion protection
Caesar

Jan 2015 - Jan 2016

Andøy Kommune

Andenes west harbour

Environmental dredging
Land reclamation
Underwater blasting

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Reference Project Belonging to Dredging

Balbinus

Balbinus

Identification code LK6936 Type: Splitter Load capacity: 300 m³ Length/width: 42.7 x 8.5 metres Control: Remote control for opening and closing from tugboat Balbinus is a modern and robust split barge developed for safe and precise handling...
Bergfri

Bergfri

Identification signal LH5047 Type: Splitter Loading capacity: 280 m³ Length/width: 36 x 8 metres Control: Remote control for opening and closing from tugboat Bergfri is a solid and functional split barge, specially developed for safe and pr...
Bergmann

Bergmann

Identification signal LH5048 Type: Splitter Load capacity: 280 m³ Length/width: 36 x 8 metres Control: Remote control for opening and closing from tugboat Bergmann is a powerful and functional split barge developed for the safe and controll...
Celsus

Celsus

Call sign LG3248 Length/width: 14.8 x 5.1 metres Propulsion: 2 x Schottel propellers for optimal manoeuvring Equipment: Crane for light lifting operations Celsus is a powerful and manoeuvrable tug and pusher boat, specially designed for dem...
e-dop-150

Dredging pumps

Type: E-DOP 150 Dredging capacity: Up to 600m3/hour Weight: 2 tonnes Operation: Electric Our two E-DOP 150 dredging pumps are specially designed for dredging at depths down to – 50 metres and have a maximum capacity of 600m3 per hour....

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