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Stabilizing a Toxic WWII Submarine Wreck

March 2017

In the February 2017 issue of the Sea Technology magazine develogic published an article describing the work performed during the U864 counterfill project at an outlet of the Bergen Fjord in Norway’s waters.

The subsea part of the monitoring system was designed around develogic CSL.1000 compact seafloor landers equipped with inductive and acoustic telemetry.

Read the full article here  Stabilizing a Toxix Submarine


develogic is a partner in the U-864 submarine project

June 2016


The German submarine U-864 sunk off the coast of Norway during World War II. The submarine was carrying about 67 metric ton of mercury.The wreck of U-864 was rediscovered in 2003, resting on the seabed at a depth of 150 metres.

To prevent any further mercury contamination into the environment the Norwegian coastal administration (NCA) is taking as a first step to install a counter fill on the seabed to stabilize the broken parts of the submarine. Stringent requirements have been set for environmental monitoring of the work.

Develogic is part of the project team. For this projects develogic developed 9 underwater measuring platforms with different sets of sensors and a highly sophisticated underwater communication system. This includes an inductive system which integrates all underwater platforms with sensors and as an additional communication line: an acoustic backup. All incoming data are accessible via a satellite link by a large spar buoy, which was especially designed by develogic for this project.

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