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2022 Adriatic Sea Interconnections 57

Adriatic Sea Interconnections – Subsea Cable Laying

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The project comprised of the installation of two 110 kV cable systems, a northern part, between Crikvenica – Konjin on the Is. Krk and a southern part, between Dugi Rat – Postira on the Is. Brač. as outlined below: 

• Northern part: Crikvenica-Konjin (Is. Krk); length of submarine cable approx. 4,186 m; 

• Southern part: Dugi Rat-Postira (Is. Brač); length of submarine cable approx 7,214 m. 

The 3x 630mm2 submarine cables replaced the old ones, which were installed along the two routes. The remaining cable length (714 m approx.) was wet stored close to one of the sites. The total length of the submarine 3x 630mm2 power cable which were loaded, transported, and installed was approximately 12,114m.

Challenging operation in that project was the onshore pull in activities, which 2 of the 4 were through HDD pipe length approx. 150m. Bellmouth installation was installed by divers and high pull in forces reached due to HDD and height difference between HDD exit point and TJB. 

Asso’s scope of work included:

  • Preparation activities // Mobilization activities
  • Cable Loading and cable transportation 
  • Pre – Laying Visual survey  
  • Cable laying 
  • Pull in Cable Onshore through HDD 
  • Wet storage of spare cable.

PROJECT SPECIFICATIONS

  • Owner
    HOPS
  • Contractor
    KONCAR
  • Year
    2022
  • Cable Type
    hvac
  • Cable Diameter
    218mm
  • Cable Weight
    104kg/m
  • Laying Length
    12km
  • Max Water Depth
    65m

SERVICES PROVIDED

Some of the services we provided for Adriatic Sea Interconnections – Subsea Cable Laying 

VESSELS USED

  • Ariadne

    DP III – Cable Laying Vessel The Ariadne is a DP-3 Cable Laying Vessel built for worldwide operations, …

    Ariadne Cable Laying Vessels

EQUIPMENT USED

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