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December - Recovery and disposal of FO-cable

TDC A/S and Deutsche Telekom AG decided to take the Denmark-Germany 1 (DK-Ger 1) FO-cable system, connecting Denmark and Germany, out of service.

Date: December 2009

Project: Cable Recovery in the North Sea (DK-Ger 1) fibre optic cable

Clients: TDC A/S & Deutsche Telekom AG

TDC and Deutsche Telekom AG decided to take the Denmark-Germany 1 (DK-Ger 1) fibre optic cable system, connecting Denmark and Germany, out of service. Consequently the submarine cable within the 12 nautical mile zone had to be recovered and disposed of.

JD-Contractor A/S was awarded the contract to perform the recovery of part of the DK-Ger 1 cable system by TDC and Deutsche Telekom AG.

The fibre optic submarine cable to be recovered was partly double armoured cable and partly single armoured cable, with cable weights of 7,1 ton/km and 4,0 ton/km.

The submarine cable to be recovered was defined as follows:

  • Segments 1A, where 40 km of cable was to be recovered within the 12 nm zone of the Danish main coast.
  • Segments 1A, where 28 km of cable was to be recovered within the 12 nm zone of the Danish/German main coast.
  • Segments 2A and 2B, where 65 km of cable was to be recovered within the 12 nm zone of the islands of Helgoland/Düne.
  • Segment 3 from beach joint at the Island Norderney, where 25 km of cable was to be recovered within the 12 nm zone from the German coast.

The majority of the recovery was carried out by the Cable Barge Henry P. Lading supported by tugs and M/S Cable One for preparations of cable ends and crossings. Cable landings were recovered by S/B Victor, a shallow drafted self-propelled barge. The operation was completed in March 2010 and a total of 150 km of cable were recovered from the seabed.