The Norwegian Coastal Administration (NCA) has awarded a contract to Van Oord Norway AS for counter filling in the wreck area for the submarine U-864, outside the island of Fedje on the west coast of Norway.
Intended to ensure seabed stability in the area, this operation must be conducted regardless of the main measure chosen to protect the environment against mercury pollution from the German World War Two wreck.
World leading company
This Dutch company ranks one of the world leaders in installing counter fills and other advanced rock installations at sea beds and has long experience from similar assignments for the offshore industry in the North Sea.
Monitoring the environment
Stringent requirements have been set for environmental monitoring of the work. Such checks will be conducted during the maritime operations by the Norwegian Institute for Water Research (Niva) as a subcontractor to Van Oord.
“Following a detailed evaluation, Van Oord was found to have submitted the best overall tender,” says Johan Marius Ly, director of emergency preparedness at the NCA.
New geotechnical analyses of the seabed in the area around the Second World War wreck were conducted in 2013. On that basis, experts from the Norwegian Geotechnical Institute (NGI) and DNV GL recommended that counter filling should begin as soon as possible.
This operation involves laying some 100 000 cubic metres of sand and rock in a controlled and precise manner from a specially designed ship in order to stabilise the seabed.
"That in turn will reduce the risk of movement by unconsolidated sediments, including materials contaminated with mercury leaked from the submarine," Ly concludes.
Established in the deepest part of the wreck area, the counter fill will not affect the choice of later measures to protect the environment.
- Van Oord awarded contract for installing counter filling beside the forepart of the wreck.
- The counter filling is intended to ensure seabed stability in the area.
- Maritime operations are due to begin in late May 2016 and to last about five weeks.
- A preliminary project commissioned by the Norwegian Ministry of Transport and Communications was submitted by NCA in May 2014. This detailed two options – either removing mercury containers from the hull with subsequent coverage of the wreck and polluted sediments, or simply covering the wreckage and the contaminated seabed.
Chart providers offer digital sailing routes to Norwegian ports
Mariners, who subscribe to electronic charts from PRIMAR, now also get access to the Norwegian Coastal Administration's digital reference routes for navigation in PRIMAR’s chart service.
Work will now begin on the Stad Ship Tunnel
The Norwegian Coastal Administration has received the assignment letter from the Ministry of Transport and Communications, which gives a green light to start preparations for the construction of the Stad Ship Tunnel.
Safer Shipping in the Arctic
ArcticInfo is a website that provides information about the conditions in Arctic waters, and decision support to support safer voyages. By increasing maritime safety in the High North, we reduce the risk of unwanted incidents and accidents.
New AI monitoring tool introduced in the VTS service
The Norwegian Coastal Administration will soon introduce a new digital decision support tool based on Artificial Intelligence (AI) algorithms that provides more automated monitoring of ship traffic. The tool gives VTS centres a better basis for earlier detection of unwanted and critical traffic situations.
Fees for 2021
Fees for 2021 have increased to meet the expected increase in prices and wages by 2.1 per cent on average in 2021. The Norwegian government will finance the loss in income caused by the Covid-19 pandemic in 2020 and 2021.
- Go to archive