The Hellenic Telecommunications Organization (OTE S.A) in terms of a new developmental plan, had launched an invitation to tender for the protection of the below new interconnections:

  • Artemis-Marmari
  • Evia-Andros
  • Andros-Tinos
  • Tinos-Myconos
  • Pefkochori-Neos Marmaras
  • Kos-Nissiros
  • Kassos-Karpathos
  • Spetses-Kosta
  • Hydra-Metochi
  • Trikeri-Pteleos

Following the procedure of underquoted competition, Assodivers Ltd. was awarded the contract for landing and nearshore protection of ten fiber optic cables at twenty shore ends located in Aegean and Saronic sea. 

The SoW included the recovery of the wet storaged cables, final laying, separate shore end cable landing on the final route up to the beach manhole (BMH) and protection up to 40m wd.

The operations were executed using the DP-capable FB 'Assodiver VII', towed to/from worksites by TB 'Hydna', as a working platform to assist on cable recovery, laying and pulling operations onshore, as well as to assist on nearshore protection of each cable, at a trenched depth of 1.5m. Due to mixed and hard soil composition, the 'AssoTrencher V' treching vehicle was equipped with a chain cutter or a trenching wheel, depending on the seabed soil.

Project Specifications

10 Links

Year:
2009
Contractor:
Assodivers Ltd.
Cable Type:
FOC
Cable Weight:
3.4kg
Cable Diameter:
12mm
Service Provided:
Landing - Nearshore Cable Burial
Owner:
OTE S.A
Trenching Length & Cover Depth:
14,808m @ 1.5m
Location:
Aegean Sea, Greece
Max Water Depth:
45m