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SUBSEA CABLE EXPERTS

The worldwide experts in offshore installation projects

Asso.subsea undertakes among the most complex subsea cable projects in the world. Thanks to our wide pool of resources and highly qualified personnel, we are able to tailor-make the right tailor-made solution for any type of project.

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We hold an unrivalled track record in the transportation, installation and protection of any type of submarine cables, from interconnectors to offshore wind farms.

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Learn more about Provence Grand Large Project – Cable Installation for PGL Floating Offshore Windfarm

Provence Grand Large Project – Cable Installation for PGL Floating Offshore Windfarm

Asso.subsea, in collaboration with Prysmian Group, completed the cable installation, burial, and protection for the Provence Grand Large Floating Offshore Wind Project, developed by EDF Renewables and its partners in the Mediterranean Sea. Positioned 1 …

Provence Grand Large Project – Cable Installation for PGL Floating Offshore Windfarm
Learn more about Adriatic Sea Interconnections Project II – Subsea Cable Laying

Adriatic Sea Interconnections Project II – Subsea Cable Laying

The project involved replacing outdated submarine cables with 110 kV 3 x 630 mm2 counterparts along four routes, while storing the remaining length (approximately 1500 m) underwater near one of the sites. The total length of the loaded, transported, an …

Adriatic Sea Interconnections Project II – Subsea Cable Laying
Learn more about Gode Wind 3 (Germany) – Subsea Cable Laying & Protection 

Gode Wind 3 (Germany) – Subsea Cable Laying & Protection 

The Gode Wind 3 project concerns the connection of two AC grid systems, the offshore wind farms Kaskasi II and Gode Wind 3 to the associated HVDC offshore substations.   With the Gode Wind 3 project, TenneT has installed a three-phase connect …

Gode Wind 3 (Germany) – Subsea Cable Laying & Protection
Learn more about Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation

Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation

Asso has performed the route preparation (boulder clearance & PLGR operations), cables installation (cables free laying and pull-in activities) and protection activities by means trenching at 57x array cables and 14x collector cables. The scope of …

Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation
Learn more about St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation

St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation

The St. Brieuc Project zone is located off the northwest coast of France, in the bay of St. Brieuc. The proposed development zone is approximately sixteen (16) km from the shore and extends over an area of 103 km². The actual wind farm site is approxim …

St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation
Learn more about Kaskasi II (Germany) – Subsea Cable Laying & Protection

Kaskasi II (Germany) – Subsea Cable Laying & Protection

The Kaskasi II project concerns the realization of  a three-phase AC connection in North-Sea-Cluster 4. The three-phase current generated in the Kaskasi II offshore wind farm is to be transported to the HVDC substation HelWin Beta via two AC subma …

Kaskasi II (Germany) – Subsea Cable Laying & Protection
Learn more about Viking Link – Subsea Cable Protection

Viking Link – Subsea Cable Protection

Viking Link is a 1,400MW 760km subsea interconnector between the substation Bicker Fen in Lincolnshire, UK and the substation Revsing in southern Jutland, Denmark.  The purpose of the project is the transmission of electrical energy between Revsing Den …

Viking Link – Subsea Cable Protection
Learn more about Naxos Thira Interconnection – Subsea Cable Laying & Protection

Naxos Thira Interconnection – Subsea Cable Laying & Protection

Cyclades Phase D The Naxos Thira Interconnection comprises the design, supply and installation of a single circuit 150kV AC Submarine and Optical Cables System for the electrical interconnection of Thira (Santorini) island to the Hellenic Electricity T …

Naxos Thira Interconnection – Subsea Cable Laying & Protection
Learn more about Adriatic Sea Interconnections – Subsea Cable Laying

Adriatic Sea Interconnections – Subsea Cable Laying

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 ( …

Adriatic Sea Interconnections – Subsea Cable Laying
Learn more about Lavrion Karystia Project (Greece) – Subsea Cable Laying & Protection

Lavrion Karystia Project (Greece) – Subsea Cable Laying & Protection

The Lavrio – Karystos project concerns the interconnection of Karystia Wind Farms located at the southern part of Evia Island (Karystia region) to the Mainland Power Transmission System at PPC Lavrion substation. he interconnection will be configured b …

Lavrion Karystia Project (Greece) – Subsea Cable Laying & Protection
Learn more about Paros – Naxos – Mykonos Interconnection (Greece) -Subsea Cable Laying & Protection

Paros – Naxos – Mykonos Interconnection (Greece) -Subsea Cable Laying & Protection

Cyclades Phase B The Cyclades Phase B project consists of two interconnections, one between Paros and Naxos and one between Naxos and Mykonos. The Paros-Naxos interconnection has a maximum sea depth of approximately 60 m and the length of the indicativ …

Paros – Naxos – Mykonos Interconnection (Greece) -Subsea Cable Laying & Protection
Learn more about SeaMade OWF (IAC) (Belgium) – Cable Protection

SeaMade OWF (IAC) (Belgium) – Cable Protection

The Seastar and Mermaid projects concerns the most northern offshore concession in the designated offshore energy zone in the Belgian EEZ. They are located on the Belgian Continental Shelf, in the Belgian Part of the North Sea (BPNS). The Mermaid site …

SeaMade OWF (IAC) (Belgium) – Cable Protection
Learn more about Kriegers Flak (Denmark) – Boulder Clearance

Kriegers Flak (Denmark) – Boulder Clearance

The Kriegers Flak BC (Boulder Clearance) project concerns the boulder removal operations at predefined footprints for the subsequent jack-up barge operations for the WTG installation at the Danish Kriegers Flak OWF. This wind farm of 72 locations, …

Kriegers Flak (Denmark) – Boulder Clearance
Learn more about Mantoudi-Skiathos Interconnection (Greece) -Subsea Cable Laying & Protection

Mantoudi-Skiathos Interconnection (Greece) -Subsea Cable Laying & Protection

The project Mantoudi-Skiathos Interconnection concerns the design, supply and installation of a single circuit 150kV AC Submarine and Underground Transmission Line for the interconnection of Skiathos Island to the Evia Island (Mantoudi), adjacent to Gr …

Mantoudi-Skiathos Interconnection (Greece) -Subsea Cable Laying & Protection
Learn more about Kafireas Interconnection (Greece)- Subsea Cable laying & Protection

Kafireas Interconnection (Greece)- Subsea Cable laying & Protection

The Kafireas project concerns the interconnection of 16 Wind Farms located at the southern part of Evia Island (southeast of Karystos) to the Hellenic mainland Power Grid at Pallini EHV Center (Attica region). The interconnection will be configured by …

Kafireas Interconnection (Greece)- Subsea Cable laying & Protection
Learn more about IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection

IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection

The IFA2 project concerns the HVDC electricity transmission interconnector between France and England across the English Channel. The French landfall in North of Caen, at Merville-Franceville, in the Baie de Seine, and the English landfall is at Daedal …

IFA2 HVDC Interconnection (France – UK)- Subsea Cable Protection
Learn more about IFA2 – HVAC Cables Offshore Protection

IFA2 – HVAC Cables Offshore Protection

The IFA2 project concerns the HVDC and HVAC electricity transmission interconnector between France and England across the English Channel. In addition to the main HVDC interconnection, there is a HVAC link from the converter station at the main English …

IFA2 – HVAC Cables Offshore Protection
Learn more about Rion – Antirion Interconnection (Greece)- Subsea Cables Laying & Protection

Rion – Antirion Interconnection (Greece)- Subsea Cables Laying & Protection

The Rion-Antirrion project concerns the interconnection, between Rion and Antirrion and it is located in Municipality of Patras, Achaia Regional Unit (Peloponnese) and in Municipality of Nafpaktia, Aitoloakarnania Regional Unit (Sterea Hellas) respecti …

Rion – Antirion Interconnection (Greece)- Subsea Cables Laying & Protection
Learn more about Lavrio – Syros Interconnection (Greece) – Nearshore Protection Work & Mattresses

Lavrio – Syros Interconnection (Greece) – Nearshore Protection Work & Mattresses

The Lavrio-Syros II project concerns the second interconnection, between Syros and the Greek Mainland (Lavrio, Attica). This project is the third phase of the Interconnection of the Cyclades to the Greek Mainland Grid. In summary, the submarine cable r …

Lavrio – Syros Interconnection (Greece) – Nearshore Protection Work & Mattresses
Learn more about Evia – Andros – Tinos

Evia – Andros – Tinos

The Evia-Andros-Tinos project concerns the islands of Evia, Andros, and Tinos are linked together by four outdated single-core oil-filled AC Submarine Power Cables. Has been planned by IPTO the replacement of the existing power transfer system between …

Evia – Andros – Tinos
Learn more about Albatros HVAC Connection

Albatros HVAC Connection

The “Albatros” project concerns the HVAC grid connection to the offshore wind farm Albatros. The connection uses the existing “north” Global Tech 1 cable route (Borwin beta – GlobalTech 1) already installed. After the initial pull-in at Albatros OWF pl …

Albatros HVAC Connection
Learn more about Deutsche Bucht – Submarine Link Cables Installation and Protection

Deutsche Bucht – Submarine Link Cables Installation and Protection

The DBU project concerns the HVAC submarine link between the AC/DC offshore converter station BorWin beta platform and the Deutsche Bucht offshore wind park, located in the South-West German Bight region of the southern North Sea. The system is compose …

Deutsche Bucht – Submarine Link Cables Installation and Protection
Learn more about Global Tech 1 – Submarine Link Cables Installation and Protection

Global Tech 1 – Submarine Link Cables Installation and Protection

The Global Tech 1 (GT-1) project concerns the realization of a new HVAC grid connection between the offshore substation BorWin Gamma and the grid connection point (OSS) on the OWF Global Tech 1 by jointing the existing cables and new cables. The system …

Global Tech 1 – Submarine Link Cables Installation and Protection
Learn more about Rampion OWF – Export Cable 4

Rampion OWF – Export Cable 4

The Rampion Offshore Wind Farm (ROWF) is located in the English Channel, approximately 13km offshore the Sussex coast. The wind farm consists of 116 wind turbines, installed at water depths between 19m and 40m. The maximum total output is 400MW and the …

Rampion OWF – Export Cable 4
Learn more about Kriegers Flak CGS

Kriegers Flak CGS

Energinet SOV and 50Hertz Transmission GmbH have built a cable connection, consisting of two HVAC cables, between Krieger’s Flak offshore substation KFB (Denmark) and EnBW Baltic 2 offshore substation (Germany). This project is part of the Krieger’s Fl …

Kriegers Flak CGS
Learn more about COBRA Project – German Offshore Section

COBRA Project – German Offshore Section

The COBRA cable project consists of the power link between Denmark and The Netherlands and it has been developed by Energinet.dk and TenneT TSO B.V. The purpose of COBRA Cable is to allow for the integration of more renewable energy into the Dutch and …

COBRA Project – German Offshore Section
Learn more about BorWin 3 – Pull-in on Platform

BorWin 3 – Pull-in on Platform

BorWin3 project refers to a 900MW DC grid connection system in the North Sea cluster 8 developed by TenneT. The system’s direct current is transmitted from BorWin gamma offshore converter platform to a TenneT substation located in Emden/Ost, through a …

BorWin 3 – Pull-in on Platform
Learn more about COBRA Project & BorWin3 Project – Jointing

COBRA Project & BorWin3 Project – Jointing

The COBRA cable project consists of the power link between Denmark and The Netherlands and it has been developed by Energinet.dk and TenneT TSO B.V.  The cables system that was installed is composed by: 2 High Voltage Direct Current (HVDC) 1 Fiber …

COBRA Project & BorWin3 Project – Jointing
Learn more about Spetses-Spetsopoula Interconnection

Spetses-Spetsopoula Interconnection

The Hellenic Electricity Distribution Network Operator (HEDNO/DEDDHE) has awarded Assodivers Group a contract for the replacement of the power interconnection   between Spetses and Spetsopoula at the Argosaronic Gulf in Greece. The cables sys …

Spetses-Spetsopoula Interconnection
Learn more about Messina II – Mattresses Installation

Messina II – Mattresses Installation

Prysmian has been awarded a contract by Terna SpA for the construction of an HVAC interconnection system, designated as the “Messina II” project. The project connects the Italian mainland with Sicily. This vital infrastructure facilitates the transmiss …

Messina II – Mattresses Installation
Learn more about Capri-Torre Annunziata (Mediterranean Sea) Mattresses Installation

Capri-Torre Annunziata (Mediterranean Sea) Mattresses Installation

The Capri – Torre Annunziata project entails the installation of a 150kV AC submarine cable system, linking the West Italy mainland (Torre Annunziata) and Capri Island. Spanning a distance of approximately 30km, the submarine cable route, as specified …

Capri-Torre Annunziata (Mediterranean Sea) Mattresses Installation
Learn more about Hudson River (US) – Subsea Cable Replacement Project

Hudson River (US) – Subsea Cable Replacement Project

The Hudson Transmission Project is a 660MW electric transmission link between New York City and New Jersey that was completed in June of 2013. While its main purpose is to provide a new source of electric power for the New York City customers of the Ne …

Hudson River (US) – Subsea Cable Replacement Project
Learn more about Kahramaa Project – Phase 2

Kahramaa Project – Phase 2

Kahramaa (Qatar general Electricity & Water Corporation) had appointed Prysmian Cavi è Sistemi Energia SrL for a power transimission system expansion project, which was to develop the country’s first ever submarine power link serving Qatar. Th …

Kahramaa Project – Phase 2
Learn more about GCCIA

GCCIA

The consortium of Nexans Norway AS and Prysmian Cavi e Sistemi SrL was awarded by GCCIA (Gulf Countries Council Interconnection Authority) a contract of an extra high-voltage link to interconnect the power grids of the Kingdom of Saudi Arabia …

GCCIA
Learn more about Basslink (Australia) – Subsea Cable Protection

Basslink (Australia) – Subsea Cable Protection

Pirelli Cavi e Sistemi Energia S.p.A. was awarded a Contract by Basslink PTY Ltd. for the supply installation and protection of a 400KV DC submarine cable system between Victoria and Tasmania. Pirelli Cavi e Sistemi Energia S.p.A. as a main contractor …

Basslink (Australia) – Subsea Cable Protection
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VESSELS

OUR FLEET

Our vessels are meticulously maintained, upgraded, converted and customized as necessary by the Marine Division to suit each work scope that is assigned to them.

EQUIPMENT

OUR CUSTOM EQUIPMENT

Asso.subsea has a range of equipment available for utilisation in the various projects ranging from specialised underwater vehicles to land based excavators and anchilliary machinery. Most of the specialised equipment have been designed and manufactured in out fabrication yard in Elefsina and have been extensively tested in various projects.

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