Offshore works :
experienced professionals
all over the world

Very specific offshore and inland waterway works are a long tradition in the Eiffage Group. Our teams take part in projects requiring unparalleled skill and technicality – often across borders.

We deploy our specialists all over the world

The Group’s offshore and inland waterway works are undertaken by two complementary entities : ETMF and Eiffage Génie Civil Marine.

In France, our specialist ETMF teams are well-equipped for unique projects and have proven experience in the techniques required for maritime infrastructure, including dams, pile dolphins, finger-piers and locks. ETMF build new structures and repair existing ones, taking part in protection, development, maintenance, upgrading and extension projects to meet all needs.

Eiffage Génie Civil Marine specialize in large-scale port and maritime works in France and on the international scene. They operate for private and public clients on turnkey projects for container terminal operators and port authorities (containers, bulk, ro-ro and cruise lines), complex maritime infrastructure (oil, gas and mining companies) and urban and coastal development or coastline protection.

Flagship projects on all continents

  • Greater Tortue Ahmeyim - Senegal Mauritania

    Gas terminal
    < class="name">Greater Tortue Ahmeyim

    Our teams are leading the consortium appointed by BP to build the gas terminal on the Greater Tortue Ahmeyim field: a docking facility protected by an offshore breakwater. Made up of 21 concrete caissons, each weighing 16,500 tonnes and manufactured by Eiffage in Dakar (Senegal), the 1.2-km breakwater will be laid at -33 m, 10 km offshore. At the same time, the 2.5 million tonnes of quarry material required for the foundation of the underwater seawall supporting the concrete caissons are produced by Eiffage in Mauritania in a quarry opened specifically for the project.

  • Port of Cotonou - Benin

    Port extension
    < class="name">Port of Cotonou - Benin

    Eiffage Génie Civil Marine, in a consortium with Spie batignolles fondations and the Beninese company Adéoti, has won a design-build contract for the extension of the port basin and several quays, as well as the renovation of the north quays, at the Port of Cotonou in Benin.

    The contract is part of the Port of Cotonou's Master Plan for Expansion and Improvement, which aims to strengthen the role of Benin's only port as a driving force for local economic development. By 2025, the port's new infrastructure will be able to accommodate Post Panamax container ships.

  • Puerto Antioquia - Colombia

    Port infrastructure
    < class="name">Puerto Antioquia - Colombia

    Located on Colombia's Atlantic coast, the Puerto Antioquia project is considered by the Colombian government as a priority project of national interest. It is strategically positioned on a major axis for international container transport, close to Medellin, one of the country's main economic zones.
    The contract covers the design-build of a complete port infrastructure, including an offshore platform - for the simultaneous berthing of 5 container ships - linked by a 3.5-kilometer offshore viaduct and a 320-meter bridge to a 35-hectare fully-equipped land terminal with its own operating buildings and warehouses.

  • Quiberon – France

    Quiberon – France

    Haliguen harbour development
    Quiberon – France

    Quiberon – France

    ETMF won the contract in consortium to develop Haliguen harbour in Quiberon.

    Construction of 3 quayside surfaces (12,000 m² area) built with dredged materials protected by a double combi-wall.

    Harbour activities continued uninterrupted during the works, which amount to 18.9 million euros.

  • Bordeaux – France

    Bordeaux – France

    Underwater bank repairs
    Bordeaux – France

    Bordeaux – France

    Bordeaux stone bridge in the city centre is a masonry structure built in the early 19th century. It is 486 m long and comprises 16 piers and two abutments. Each pier is based on 250 pine piles planted in the Garonne riverbed.

    ETMF was chosen in consortium to carry out repair and reinforcement work on the bridge’s underwater banks. 

    The first stage of the operations involved filling in the pits on the Garonne River bottom caused by strong currents and river traffic, using stone-filled nets installed by waterway. During the second stage, 140-tonne gabion walls (12 m x 12 m) were placed on the underwater banks to limit the effects of weathering over time.

  • Villeneuve-sur-Yonne - France

    Villeneuve-sur-Yonne - France

    Villeneuve-sur-Yonne - France

    Villeneuve-sur-Yonne - France

    Villeneuve-sur-Yonne dam reconstruction. We first demolished the former port and carried out engineering work. We then fixed check valves, jacks and footbridges, to enable dam refilling within the timeframe fixed by French navigation authority VNF (Voies Navigables de France) before the flood-risk period.

  • Mont Saint-Michel – France

    Mont Saint-Michel – France

    Mont Saint-Michel – France

    Mont Saint-Michel – France

    This "jetty" was designed as a series of pure curves for both aesthetic and technical reasons and blends naturally into the landscape. The bridge tops 134 steel poles drilled 35 metres deep, and is covered with precast concrete slabs and oak decking - a mixture which gives the structure its discretion and elegance.

    • Length : 756 m
    • Width : 11 to 17 m
    • Total steel framework weight : 2,000 t
    • Client : Syndicat Mixte Baie du Mont Saint-Michel
    • Architect : Dietmar Feichtinger
  • Tangier – Morocco

    Tangier – Morocco

    Container terminals and full harbour facilities
    Tangier – Morocco

    Tangier – Morocco

    Design and build turnkey contract for a 5.2 million TEU-capacity container terminal adjacent to the Tangier Med 1 and Tangier Ro-Ro projects built by the same consortium.

    Scope of works :

    • Flood barrier in caissons : 2,835 m
    • Embankment dyke : 1,332 m
    • Dyke depth up to -35 m LAT

    Main quantities :

    • 105 reinforced concrete quadrilobed caissons (28 x 28 x 27 m) with average weight of 6,300 tonnes
    • Concrete : 450,000 m3
    • Steel for concrete and structures : 60,000 tonnes
    • Pit-run gravel and riprap : 17.5 million tonnes
    • Accropode™ blocks, 4 to 9 m3 : 9 000 units
  • Freetown – Sierra Leone

    Freetown – Sierra Leone

    Container terminals and full harbour facilities
    Freetown – Sierra Leone

    Freetown – Sierra Leone

    Design and build turnkey contract for Freetown Harbour container terminal extension.

    • Dredging : 260,000 m3
    • Backfill : 600,000 m3
    • Structural steel : 8,000 tonnes
    • Concrete : 12,000 m3
    • Road surface structure : 50,000 m2
    • Power plant : 6 MVA
  • Rodman – Panama

    Rodman – Panama

    Container terminal and full harbour development
    Rodman – Panama

    Rodman – Panama

    Design and build turnkey contract for wharf structure and facilities.

    Scope of works :

    • 800 m concrete pilework wharf with draught of up to 18 metres
    • 25 m steel walkways

    Main quantities

    • Reinforced concrete piles 1,400 mm in diameter, anchored in the rock by drilling : 536 units
    • Concrete : 53,000 m3
    • Backfill : 500,000 m3
    • Wharf equipment
  • Sohar – Oman

    Sohar – Oman

    Ore import/export structures
    Sohar – Oman

    Sohar – Oman

    Design and build turnkey contract for a 1,3 km jetty and import-export platforms for bulk carriers.

    • Steel piles : 26,000 tonnes
    • Steel structure : 16,000 tonnes
    • Concrete : 24,000 m3
    • Steel reinforcement : 5,000 tonnes
    • Quick release hooks : 47
  • Puerto Nuevo – Colombia

    Puerto Nuevo – Colombia

    Ore import/export structures
    Puerto Nuevo – Colombia

    Puerto Nuevo – Colombia

    Design and build turnkey contract for a jetty and docking platform designed for the export of coal on the basis of 8,000 tonnes/hour. Project delivered in record time with the use of our Cantitravel tool enabling gradual construction from the coast, and thus avoiding the use of marine equipment with the downtime involved.

    Scope of works

    • Landing from the beach
    • Approach jetty 1,750 m long x 10 m wide
    • Loading platform 347.50 m long x 22 m wide
    • 160 m service vessel platform at the end of the jetty

     Main quantities

    • Steel piles : 10,500 tonnes
    • Structural steel : 11,200 tonnes
    • Concrete : 9,500 m3
  • Al-Zour Refinery – Kuwait

    Al-Zour Refinery – Kuwait

    Maritime oil and gas infrastructure
    Al-Zour Refinery – Kuwait

    Al-Zour Refinery – Kuwait

    Eiffage Génie Civil is taking part in the Al-Zour Refinery mega-project for Kuwait Petroleum Corporation’s subsidiary KIPIC (Kuwait Integrated Petroleum Industries Company). This project includes three major structures :

     - A 1,700 metre jetty for loading ships with sulphur granules produced in the refinery. The jetty will be extended by a wharf and is to carry a 3.6 km conveyor belt linking the refinery with the ship loading towers.

     - Sea Island, an offshore platform for loading ships with refined products, located 17 km from the coast and linked to the refinery by an underwater pipeline network. The north and south wharfs linked to the central platform will enable up to 4 ships to be loaded at the same time.

     - A service port reclaimed from the sea, comprising a covered area, a berthing facility for support craft, a fuel depot and other infrastructure needed for site operations.

  • Gorgon – Australia

    Gorgon – Australia

    Maritime oil and gas infrastructure
    Gorgon – Australia

    Gorgon – Australia

    Design and build turnkey contract for Gorgon LNG liquefaction plant maritime infrastructure. 

    • Concrete caissons : 56 units (2 rectangular units, 28 x 23 x 6 m ; 40 circular units, 26 m in diameter x 6 m high ; 14 circular units, 20.5 m in diameter x 5 m high)
    • Steel modules : 120 units
    • Concrete : 60,000 m3
    • Steel structure : 34,000 tonnes
    • Process piping : 5,100 tonnes
    • Solid ballast 150,000 tonnes
    • Caisson filling ballast : 24,000 m3
  • Melchorita – Peru

    Melchorita – Peru

    Maritime oil and gas infrastructure
    Melchorita – Peru

    Melchorita – Peru

    For this LNG export facility, Eiffage Génie Civil Marine developed a revolutionary construction approach with our local partner which minimises the use of maritime equipment in the Pacific Ocean’s particularly rough swell conditions and enables safe, efficient and successful facility building.

    Design and build turnkey contract for Melchorita natural gas liquefaction terminal’s maritime infrastructure, providing berthing for LNG tankers with a capacity of up to 165,000 m3.

    • Steel (piles and jetty structures) : 23,725 tonnes (including 6,000 tonnes of prefabricated structures)
    • Quarry materials : 2.3 million tonnes
    • Prefabricated concrete slabs : 5,200 m3
    • Concrete for protective shell in cold runner system : 66,700 m3 for 12,650 units

Eiffage Génie Civil Marine : customized solutions worldwide

Eiffage Génie Civil Marine positions in France and abroad on major multidisciplinary seaport and maritime projects via design and build contracts. These allow economic variants to be optimized, with the aim of reducing our customers’ investment costs.

Our strengths :

  • Top-tier in-house engineering for structures, geotechnology and hydraulics combined with leading-edge expertise in anti-corrosion protection and maritime equipment. We have a research department in Vélizy-Villacoublay (France) and a design and engineering office in Lima (Peru).
  • A dedicated construction methods department capitalizing on experience gained on our worksites.
  • An experienced workforce for our own projects. (en propre)
  • Our own specific assets and materials, with a Materials division in Fos-sur-Mer (France).

ETMF : regional experts close to you

ETMF was created in 2006 and groups together 160 specialists of works in aquatic environments. With its three agencies in Le Havre, Lorient and La Vallette-du-Var, ETMF is positioned to operate throughout France. The company regularly uses its cutting-edge equipment in works for major seaports, waterway managers, local and regional authorities, the Government and private businesses.  

ETMF boasts a number of  landmark projects, including Kergroise trading port in Lorient, work on Cordemais thermal power plant, pontoon upgrading work in Saint-Malo marina, wharf reconstruction in Sables-d’Olonne, the Île aux Moines marina, and pipeline-laying in Berre lagoon (l’étang de Berre). 

Our specialists take part in all project configurations - both new works and upgrading - from the study phase to commissioning and operations.

Grand Tortue/Ahmeyim gas terminal : at the heart of a remarkable project

In February 2019, consortium leader Eiffage Génie Civil Marine signed an Engineering, Procurement, Construction and Installation contract with BP for the Grand Tortue/Ahmeyim gas terminal’s marine infrastructure on the maritime borders of Mauritania and Senegal. This major project involves building offshore marine infrastructure protected by a breakwater dyke, to house a floating natural gas liquefaction plant and enable LNG tankers to berth. The 1.2 km-long breakwater dyke comprises 21 concrete caissons each weighing 16,500 tonnes and manufactured by Eiffage in Dakar (Senegal). It is currently under construction and will be installed at -33 m 10 km off the coast. At the same time, the 2.5 million tonnes of quarry materials required for the underwater dyke foundations supporting the concrete caissons are being produced by Eiffage in Mauritania in a quarry opened specifically for the project.

Discover in pictures the works carried out by Eiffage Génie Civil Marine in Monaco

The Eiffage team took charge of 18 caissons, each weighing 10,000 tons, in Marseilles, towed them to Monaco and placed them by ballasting on underwater foundations previously prepared by the company, all within a delicate environmental framework that preserves the Principality's marine biodiversity. Discover in pictures the works carried out by Eiffage Génie Civil Marine in Monaco

Any questions ?

Attentive, responsive and committed: our offshore and inland waterway experts will handle your questions. Send them the contact form, giving details of your request.