OFFSHORE SERVICES JAN DE NUL GROUP SEABED INTERVENTION

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1 OFFSHORE SERVICES JAN DE NUL GROUP SEABED INTERVENTION

2 SEABED INTERVENTION Services for the offshore oil, gas and renewable energy industries are a key part of the services provided by Jan De Nul Group and are playing an ever increasing role. They can be divided into four main components: seabed intervention, rock installation and ballasting, offshore wind farms installation, and the installation of subsea cables and umbilicals. For more than 60 years, Jan De Nul Group has executed international dredging projects from start to finish, making it the ideal partner to execute offshore dredging services for the oil & gas industry, and for the offshore renewable energy market. Excavating trenches for submarine pipelines, backfilling trenches to protect pipelines, dredging sub sea excavations for wellhead protection, and realizing shore approaches, including possible installation of a cofferdam and pipe pulling, aren t holding any secrets for Jan De Nul Group. trenches with sand and gravel, the dredge pipe can be used as a fall pipe. To tackle the hardest and most difficult soil conditions during shore approach dredging, Jan De Nul Group can rely on 14 Cutter Suction Dredgers with a total installed diesel power varying up to 27,240 kw. The suitable equipment will be selected or can be adapted to meet the client s demands. To execute these dredging services the Group can rely on 28 Trailing Suction Hopper Dredgers with a hopper capacity varying from 2,320 m³ to 46,000 m³. These types of dredgers use a dynamic tracking system which allows the drag head to follow a predefined trench at low tolerances, resulting in minimum quantities being trenched at a lesser cost. The hoppers are able to dredge up to 155 m deep. For backfilling of THE LARGE SEAGOING DREDGING AND OFFSHORE VESSELS OFFER THE POSSIBILITY TO WORK IN SEA STATE CONDITIONS AND WATER DEPTHS WHICH WERE PREVIOUSLY NOT POSSIBLE. 2 SEABED INTERVENTION

3 Jan De Nul Group executed wellhead protection excavation for Husky Energy on the White Rose Project in Canada. The project was located approximately 200 nautical miles south east of Newfoundland on the Grand Banks of the Atlantic Ocean. The excavations provide wellhead protection against iceberg scouring. Jan De Nul Group mobilized its Trailing Suction Hopper Dredger Vasco da Gama in 2003, at that time the world s largest Hopper Dredger, to execute the first campaign. With a 9 m depth and dimensions of 50 X 60 m, this central excavation was the largest to be excavated. In 2012, Jan De Nul Group performed similar excavations with the current largest Trailing Suction Hopper Dredger in the world, Cristóbal Colón, equipped with two suction pipes for 155 m water depth. WHITE ROSE, CANADA PNG LNG, PAPUA NEW GUINEA The PNG LNG Project was an integrated development that included gas production from operating fields in the Southern Highlands and Western Provinces of Papua New Guinea. To build these facilities the installation of a 407 km long offshore pipeline was required. Jan De Nul Group was in charge of the 3 km trenching works at the landfall at Caution Bay, as well as the 52 km trenching works up to the landfall at the Omati River, located approximately 24 km up river from the Gulf of Papua. 3 SEABED INTERVENTION

4 To meet the growing energy requirements of the United Kingdom a new offshore pipeline from Norway s gas-rich fields to the eastern coast of the UK was laid. The 44inch diameter pipeline crosses 1,200 km, making it the longest offshore pipeline ever built. Jan De Nul Group executed the shore approach and landfall works and was responsible for the offshore dredging and rock placement. The offshore trench, some 20 km long and 1.5 to 2 m deep, was excavated using the Cutter Suction Dredger J.F.J. De Nul in boulder clay. The backfilling of the trench was performed using the Trailing Suction Hopper Dredger Filippo Brunelleschi, which also carried out the pre-sweeping of the offshore sand dunes. LANGELED, NORWAY - UK SAKHALIN, RUSSIA In Sakhalin, Russia, the first offshore project was executed in 2004 and included the trenching and backfilling of submarine pipelines and cables and the installation of cofferdams for the landfalls at Lunskoye and Aniva. 4 SEABED INTERVENTION

5 MAURITIUS In Mauritius Jan De Nul Group installed an ocean outfall of which 140 m onshore and 700 m offshore. Also a trench of almost 300 m needed to be dredged for the installation of a pipeline of 1,400 mm nominal diameters. The Backhoe Dredger Jerommeke was used to remove the basalt rock and the Side Stone Dumping Vessel Pompeï was mobilized to backfill the trench with concrete and rock to protect the pipeline against cyclones. Islay, a subsea gas and condensate reservoir, is located in 122 m water depth, approximately 6 km northeast of the Forvie Manifold in the far North Sea and has been developed by Total E&P Ltd. In October 2010 Technip, the main contractor, awarded Jan De Nul Group a subcontract to carry out deep water precision dredging to a slope with a strict vertical tolerance to mitigate against pipeline free spans. The work was carried out successfully using Jan De Nul Group s Trailing Suction Hopper Dredger Cristóbal Colón. TOTAL ISLAY, UK 5 SEABED INTERVENTION

6 In the 90s Norway and France entered into an agreement to transport natural gas from Draupner to Dunkirk. As a result, the NorFra transportation system was planned. This 42 inch diameter, 835 km long, high pressure natural gas pipeline was laid from the Draupner E platform in the Norwegian Continental Shelf to the Northern coast of France. Four separate dredging packages were tendered for this project and a combined contract was awarded to Jan De Nul Group. The total dredging scope involved offshore pre-sweeping of sand dunes on the seabed over a distance of 230 km, pre-trenching in stiff clay at the location of the crossing of the Westhinder Shipping Lane, and dredging, backfilling and civil works related to the shore approach, beach crossing and pipe pull at Dunkirk. NORFRA, FRANCE-NORWAY 6 SEABED INTERVENTION

7 SEABED INTERVENTION REFERENCE LIST START DATE LOCATION PROJECT NAME 2018 Indonesia BP Tangguh project 2018 Germany Nord Stream 2 German landfall 2017 Albania & Italy Trans Adriatic Pipeline project 2017 Belgium, France & UK NEMO interconnector 2017 Saudi-Arabia & Bahrain Saudi-Bahrain Pipeline Project 2017 Turkey Trans Anatolian Pipeline project 2016 Denmark Gravity Based Sub-Structures for AC and Combined Grid Solution CGS Offshore Substations (OSS) for Kriegers Flak 2016 UAE Hail Field Development Project 2016 Saudi Arabia Al Khafji Desalination plant 2016 United Kingdom Race Bank Offshore Wind Farm (ROW) 2016 Korea Ulsan Buoy Relocation 2015 Australia ICHTHYS GEP: Offshore Rock Installation & pre-sweeping 2014 Saudi Arabia Abu Ali Power Supply Project 2014 Argentina Vega Pleyade 2013 Canada Hebron Bundwall Removal 2013 Belgium Northwind OWF - trenching and backfilling for export cable installation 2012 Myanmar Pre-trenching and Mechanical Backfilling for Zawtika Pipeline Installation Project 2012 Canada White Rose Area Glory Hole (SWRX) 2012 Australia Wheatstone - stabilisation of subsea flowlines and pipelines 2012 Qatar Barzan Offshore Project 2011 Australia Macedon Gas Project 2011 Russia Kirinskoye Gas and Condensate Field - trenching, backfilling and subsea rock installation 2011 India Offshore Trenching Services for ONGC North Tapti Gas Field Development Project 2010 Papua New Guinea PNG LNG EPC2 Offshore Pipeline Project: Pre-trenching, Backfilling and Subsea Rock Installation 2010 United Kingdom Total Islay - Seabed Conditioning by Deep Dredging 2010 Bahamas South Riding Point - Pipeline Modification Project 2010 Myanmar Offshore Trench Dredging for MOGE Project Yadana 2009 Algeria Arzew Project GNL3Z 2009 United Kingdom New Tyne Crossing 2009 Algeria Beni Saf Desalination Plant 2009 Iran Landfall trenching South Pars gas field development - Phases 15 & Algeria Terga Power Plant Water intake 2009 United Kingdom North Sea Viking Transportation Project 2008 Saudi Arabia Dredging Works for SA LTA - BI 3008-RPO-2 - Installation of Safaniyah Shallow Water Pipelines 2008 Qatar Shell Pearl GTL Offshore Project 2007 Qatar Dredging & Backfilling Works for the Qatargas-3&4 Offshore Facilities Project 2007 Canada White Rose Development Project - Wellhead Protective Glory Holes 2007 Saudi Arabia Manifa Oil Field Development Project: Construction of 27 islands with causeway 7 SEABED INTERVENTION

8 OFFSHORE CONSTRUCTION VESSELS VOLE AU VENT WIND TURBINE INSTALLATION VESSEL Main crane capacity: 1,500 tonnes Max. water depth for jacking: 50 m Max. cargo weight: 6,500 tonnes Cargo deck: 3,535 m² SIMON STEVIN Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes JOSEPH PLATEAU Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes AHC crane capacity: 40 tonnes ISAAC NEWTON CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 7,400 tonnes + 5,000 tonnes AHC crane capacity: 40 tonnes WILLEM DE VLAMINGH CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 5,400 tonnes AHC crane capacity: 40 tonnes ADHÉMAR DE SAINT-VENANT TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes DANIEL BERNOULLI TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes LA BOUDEUSE Dynamic Positioning: DP Rock carrying capacity: 3,300 tonnes Max. discharge depth: 130 m Equipped with vertical fall pipe ROV and inclined fall pipe TIGER Dynamic positioning: DP Rock carrying capacity: 3,500 tonnes Equipped with inclined fall pipe for large diam. rock POMPEI SIDE STONE INSTALLATION VESSEL Dynamic positioning: DP Rock carrying capacity: 1,350 tonnes Mooring system: 6 point anchoring TRENCHING EQUIPMENT UTV1200 SUNFISH MOONFISH STARFISH TRENCHING ROV PLOUGHING VEHICLE INTERTIDAL TRENCHING VEHICLE ELEVATED EXCAVATOR Operating weight: 48 tonnes Power: 900 kw (1200 hp) Max. trenching depth chain cutter: 1.6 m Max. trenching depth jetting mode: 3 m Max operating depth: 500 m Operating weight: 130 tonnes Power: 200 kw V-shaped plough width: 460 mm Max. burial depth: 1.5 m Max. operating depth: 9.5 m Operating weight: 121 tonnes Power: 600 kw Chain cutter trencher width: 400 mm Max. burial depth: 6 m Max. operating depth: 250 m Operating weight: tonnes Power: kw Operating water depth: m 8 SEABED INTERVENTION V MAY

9 OFFSHORE SERVICES JAN DE NUL GROUP SUBSEA POWER CABLES AND UMBILICALS

10 SUBSEA POWER CABLES AND UMBILICALS Services for the offshore oil, gas and renewable energy industries are a key part of the services provided by Jan De Nul Group and are playing an ever increasing role. They can be divided into four main components: seabed intervention, rock installation and ballasting, offshore wind farms installation, and the installation of subsea cables and umbilicals for the oil and gas industry as well as for the offshore renewable energy market. The Multipurpose Installation Vessel Willem de Vlamingh is equipped with a 5,400 ton turntable and the Fall Pipe Vessel Simon Stevin has installed umbilicals from the aft deck. This allows a combined scope of cable, umbilical and rock installation to be executed by a single vessel, resulting in considerable saving on mobilization cost for the client. The Multipurpose Vessel Isaac Newton has a cable carrying capacity of 10,500 ton and is also able to execute trenching and subsea rock installation works. JAN DE NUL GROUP S FLEET INCLUDES CABLE INSTALLATION VESSELS, OF WHICH ONE WITH A CARRYING CAPACITY OF 10,500 TON WHICH ALLOW CABLES AND UMBILICALS OF LONGER LENGTH TO BE INSTALLED WITHOUT OFFSHORE JOINT. 2 SUBSEA CABLES AND UMBILICALS

11 The Sakhalin III project is an oil and gas development program that includes the Kirinskoye gas and condensate field. It s the first Russian subsea production system producing directly from this development. For this project, Jan De Nul Group deployed the Fall Pipe Vessel Simon Stevin equipped with umbilical installation equipment on the aft deck to install four infield umbilicals between the four subsea wells and the manifold. The length of the umbilicals, with pre-fixed subsea distribution units, varied between 1.27 and 7.37 km, their weights varied between 45 and 147 ton per reel. Following the umbilical installation the vessel directly carried out rock installation to stabilize the umbilicals. SAKHALIN III PROJECT, RUSSIA NORTHWIND PROJECT, BELGIUM Jan De Nul Group installed the submarine export cable to connect the 215 MW Northwind wind farm off the Belgian coast to the power grid. Before laying the cable a deep trench through the Scheur channel, one of the most heavily navigated channels in the world, needed to be dredged. The cable itself was loaded aboard the Multipurpose Installation Vessel Willem de Vlamingh in Norway and then installed between the Belwind Platform and Zeebrugge. The 43 km long electricity cable weighs 5,250 ton. To modify this vessel for cable lay the rock installation system was replaced by a 5,400 ton capacity turntable with a diameter of 28 m and a height of over 6 m. 3 SUBSEA CABLES AND UMBILICALS

12 BELWIND PROJECT, BELGIUM In the North Sea, in front of the Belgian coast, part of the Belwind phase 2 wind power plant is providing a laboratory and testing facility for Alstom to assess their Haliade MW turbine with real-life offshore wind and sea conditions. Therefore a 33 kv cable had to be installed. Jan De Nul Group was in charge of the installation, burial and scour protection of the cable. The Fall Pipe Vessel Simon Stevin was mobilized for this job and was equipped with an ROV trencher to bury the cable after installation. 4 SUBSEA CABLES AND UMBILICALS

13 AYATSIL FIELD, MEXICO To develop the Ayatsil oil field, located in the southern part of the Gulf of Mexico, several platforms were installed and needed to be provided with electrical power. To achieve that, one platform has been equipped with a large generator with several cables branching out to provide the other platforms with power. Using the vessel Willem de Vlamingh Jan De Nul Group installed various power cables with a combined length of 82 km. A total of ten cables were laid between the various offshore platforms of which ten first end pull-ins, seven second end pull-ins and three wet storages were carried out. All cables were buried after installation using an ROV trencher with water jets. 5 SUBSEA CABLES AND UMBILICALS

14 Fifty-two nautical miles north-east of Doha, Qatar, crude oil from offshore oil fields is being processed on Halul island. To meet the present and future electrical power demand of the island two 132 kv submarine power cables between Ras Laffan and the island need to be installed. Jan De Nul Group was appointed as cable installation contractor. With a complete length of two times 100 km, and a total of 58 crossing alongside the route, this was an extremely challenging work. As the cables weighted up to 70 kg/m, the cables were installed in sections of 50 km. Next to the complete cable installation with Willem de Vlamingh, the scope includes touchdown ROV monitoring and shore end pulls in Ras Laffan an Halul Island. HALUL PROJECT, QATAR 6 SUBSEA CABLES AND UMBILICALS

15 SUBSEA POWER CABLES AND UMBILICALS REFERENCE LIST START DATE LOCATION PROJECT NAME 01/04/2018 Germany Trianel Windpark (TWP) 01/04/2018 Germany Borkum Riffgrund 2 (BR02) 01/09/2017 United Arab Emirates NASRII Project 09/05/2016 United Kingdom Western Link Interconnector Project 01/05/2016 United Kingdom Burbo Bank Extension Offshore Wind Farm (BBW02) 01/04/2016 United Kingdom Race Bank Offshore Wind Farm (ROW01) 01/03/2016 Canada Prince Edward Island - New Brunswick Interconnector Project (PEI-NB) 01/01/2016 United Kingdom Walney Offshore Wind Farm Phase 2 (WOW02) 01/12/2015 Saudi Arabia Marjan GOSPs Project 01/09/2015 Saudi Arabia Marjan & Zuluf Field Facilities Project 01/12/2014 Saudi Arabia Abu Ali Power Supply Project 01/10/2014 Qatar Halul Island Power Supply Project 04/04/2014 Belgium Alstom Belwind Demonstration Project 28/07/2013 Mexico Ayatsil Power Cable Project 01/03/2013 Belgium Northwind Offshore Wind Farm Project 26/03/2012 Russia Kirinskoye Gas and Condensate Field Umbilical Installation 7 SUBSEA CABLES AND UMBILICALS

16 OFFSHORE CONSTRUCTION VESSELS VOLE AU VENT WIND TURBINE INSTALLATION VESSEL Main crane capacity: 1,500 tonnes Max. water depth for jacking: 50 m Max. cargo weight: 6,500 tonnes Cargo deck: 3,535 m² SIMON STEVIN Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes JOSEPH PLATEAU Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes AHC crane capacity: 40 tonnes ISAAC NEWTON CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 7,400 tonnes + 5,000 tonnes AHC crane capacity: 40 tonnes WILLEM DE VLAMINGH CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 5,400 tonnes AHC crane capacity: 40 tonnes ADHÉMAR DE SAINT-VENANT TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes DANIEL BERNOULLI TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes LA BOUDEUSE Dynamic Positioning: DP Rock carrying capacity: 3,300 tonnes Max. discharge depth: 130 m Equipped with vertical fall pipe ROV and inclined fall pipe TIGER Dynamic positioning: DP Rock carrying capacity: 3,500 tonnes Equipped with inclined fall pipe for large diam. rock POMPEI SIDE STONE INSTALLATION VESSEL Dynamic positioning: DP Rock carrying capacity: 1,350 tonnes Mooring system: 6 point anchoring TRENCHING EQUIPMENT UTV1200 SUNFISH MOONFISH STARFISH TRENCHING ROV PLOUGHING VEHICLE INTERTIDAL TRENCHING VEHICLE ELEVATED EXCAVATOR Operating weight: 48 tonnes Power: 900 kw (1200 hp) Max. trenching depth chain cutter: 1.6 m Max. trenching depth jetting mode: 3 m Max operating depth: 500 m Operating weight: 130 tonnes Power: 200 kw V-shaped plough width: 460 mm Max. burial depth: 1.5 m Max. operating depth: 9.5 m Operating weight: 121 tonnes Power: 600 kw Chain cutter trencher width: 400 mm Max. burial depth: 6 m Max. operating depth: 250 m Operating weight: tonnes Power: kw Operating water depth: m 8 SUBSEA CABLES AND UMBILICALS V MAY

17 OFFSHORE SERVICES JAN DE NUL GROUP SUBSEA ROCK INSTALLATION

18 SUBSEA ROCK INSTALLATION Services for the offshore oil, gas and renewable energy industries are a key part of the services provided by Jan De Nul Group and are playing an ever increasing role. They can be divided into four main components: seabed intervention, rock installation and ballasting, offshore wind farms installation, and the installation of subsea cables and umbilicals. The Group operates DP2 Fall Pipe Vessels, of which two are the largest in the world and able of installing 32,000 ton of rock in water depths up to 2,000 m. The vessels are able to install rocks very precisely, within a tolerance of only a few centimetres. With the positioning of the vessels, one remaining in the western hemisphere and the other one in the eastern hemisphere, Jan De Nul Group can offer considerable savings on mobilization costs to its clients. The Group also disposes of DP vessels able to install rocks using an inclined fall pipe, making it possible to reach areas beneath the structures. JAN DE NUL GROUP IS AN EXPERT IN PLACING ROCK PROTECTION AND BALLASTING FOR OFFSHORE STRUCTURES IN THE MOST EXTREME WATER DEPTHS AND WEATHER CONDITIONS. 2 SUBSEA ROCK INSTALLATION

19 ADRIATIC LNG, ITALY The natural gas supply to Italy had to be increased by the installation of an offshore LNG terminal. After the GBS had been towed to the location 16 km northeast of Porto Levante and placed on the seabed, solid ballast was pumped into it to gain necessary permanent on-bottom weight. At the same time, scour protection in the form of rock was installed around the perimeter of the GBS and around the base of the two mooring dolphins. The solid ballast and scour rock installation were awarded to Jan De Nul Group. To install the scour protection, the vessel La Boudeuse was modified to work as an inclined fall pipe vessel with dynamic position and/or dynamic tracking, allowing the vessel to reach areas between the mooring dolphins and the GBS. SAKHALIN, RUSSIA In Sakhalin, Russia, Jan De Nul Group installed a rock berm on top of a subsea pipeline, which crosses the Tatar Strait, in order to protect it from water current scours and from ice impacts. The below average climate conditions over the winter triggered atypical ice accumulation and formations damaged the existing crude export pipeline and demanded extra protection matters. The berms were installed over the crossing. Some segments were insufficient in width and thickness and were upgraded. Other ones required the installation of completely new berms. An estimated amount of 176,000 ton of rock was used, predominately in one size from 40 to 70 mm and a smaller amount of 120 to 180 mm in size. Also in Sakhalin, the Fall Pip Vessel Simon Stevin was equipped with an inclined fall pipe to place rocks for remedial works at platforms and offshore oil, gas, multiphase and MEG pipelines. A total of 32,000 ton was installed. 3 SUBSEA ROCK INSTALLATION

20 WHEATSTONE, AUSTRALIA In Australia, a new offshore platform will be installed in the Wheatstone field. The platform will consist of a Steel Gravity Structure (SGS) as the foundation and topsides. Jan De Nul Group was awarded the foundation works of the SGS. The scope consist of three main activities: rock blanket installation, solid ballast installation of the four pods of the SGS and scour protection installation along the pods. For each activity specific equipment and tools have been designed and fabricated. But all works were carried out by one vessel only, the Fall Pipe Vessel Joseph Plateau. With floor dimensions of m and 76.5 m and a height of approximately 100 m the seabed needed to be perfectly flat to guarantee the stability. Therefore a rock blanket of approximately 1 m thickness was installed by Joseph Plateau. Strict tolerances were enforced during this installation work varying from 5 cm to 10 cm. To achieve these tolerances, two different levelling tools were designed and constructed by Jan De Nul Group: a subsea levelling tool and a sweep beam attached to the heave compensated ROV. 4 SUBSEA ROCK INSTALLATION

21 On top of the deck of the SGS, an extra hang-off platform was installed especially for the solid ballasting scope. Jan De Nul Group engineered a system that is fully integrated in this platform to make the connection between the ballasting units on board of Joseph Plateau, and the ballast compartments of the SGS. Internal compartments, stiffeners and girders in the SGS pods hinder the ballasting process. To select the appropriate solid ballasting material several model tests, one on scale 1/6, were carried out to define the maximum filling degree. To pump the solid ballast into the pods of the SGS, Jan De Nul Group s mixing and pumping plant was installed on the aft deck of Joseph Plateau. The use of these kinds of plants at an offshore location is of course critical. To confirm the compatibility of the ballast material and the pumping and mixing unit, a full scale test has been carried out. 5 SUBSEA ROCK INSTALLATION

22 To protect the J-tubes against erosion concrete matrasses were installed. To execute this task an AHC-crane was bought and installed on board of the Fall Pipe Vessel. This heave compensated offshore crane is ideal for such installation services and can also be installed on board of other vessels. 6 SUBSEA ROCK INSTALLATION

23 SUBSEA ROCK INSTALLATION REFERENCE LIST START DATE LOCATION PROJECT NAME 15/05/2018 Netherlands Neptune Rock remedial 09/02/2018 Denmark Kriegers Flak 26/12/2017 Monaco Anse du Portier 25/07/2017 Germany Borkum Riffgrund 2 OWF filter installation 22/05/2017 Australia Julimar Freespan Remediation 20/05/2017 France Calais Port Expansion 07/05/2017 United Kingdom Culzean Subsea Construction Services 22/02/2017 Australia Vincent Anchor Remediation 30/01/2017 United Kingdom Racebank Platform ROW01-Z01 scour protection 22/11/2016 Taiwan Tung Hsiao Submarine Pipeline KP43-44: Rock Protection Works 11/06/2016 South Korea Ulsan KNOC SPM relocation 15/03/2016 United Kingdom Apache FNT Development 14/03/2016 Australia Wheatstone Deepwater Rock installation 01/04/2016 Belgium Bligh Bank Phase 2 - Nobelwind OWF 03/10/2015 United Kingdom Hess IVRR Decommissioning 15/08/2015 Russia Stabilization of PA-A, PA-B and pipelines SEIC /08/2015 Denmark Subsea Rock Installation for Tyra East, Valdemar & Roar 18/04/2015 Mexico Ayatsil & Tekel Cable - Cable trenching & Rock Installation 25/01/2015 Germany Butendiek armour installation 13/01/2015 Australia ICHTHYS GEP: Offshore Rock Installation 01/10/2014 Denmark Subsea Rock Installation for Tyra East & Southeast B 17/09/2014 United Kingdom Rock Installation Services Moray Offshore 31/08/2014 Denmark Rock Dumping Services - Dong (Hejre) Project 25/08/2014 United Kingdom Gunfleet Sands OWF Contract for Rock Installation 05/08/2014 Germany Global Tech One 01/08/2014 Russia SEIC /06/2014 United Kingdom Clair Ridge Project 16/05/2014 The Netherlands Subsea Rock Installation Amstel-Sierra-Orca 26/04/2014 Malta-Italy SRI Malta-Sicily Cable 04/04/2014 Belgium Alstom Belwind Demonstration Project 7 SUBSEA ROCK INSTALLATION

24 OFFSHORE CONSTRUCTION VESSELS VOLE AU VENT WIND TURBINE INSTALLATION VESSEL Main crane capacity: 1,500 tonnes Max. water depth for jacking: 50 m Max. cargo weight: 6,500 tonnes Cargo deck: 3,535 m² SIMON STEVIN Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes JOSEPH PLATEAU Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes AHC crane capacity: 40 tonnes ISAAC NEWTON CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 7,400 tonnes + 5,000 tonnes AHC crane capacity: 40 tonnes WILLEM DE VLAMINGH CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 5,400 tonnes AHC crane capacity: 40 tonnes ADHÉMAR DE SAINT-VENANT TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes DANIEL BERNOULLI TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes LA BOUDEUSE Dynamic Positioning: DP Rock carrying capacity: 3,300 tonnes Max. discharge depth: 130 m Equipped with vertical fall pipe ROV and inclined fall pipe TIGER Dynamic positioning: DP Rock carrying capacity: 3,500 tonnes Equipped with inclined fall pipe for large diam. rock POMPEI SIDE STONE INSTALLATION VESSEL Dynamic positioning: DP Rock carrying capacity: 1,350 tonnes Mooring system: 6 point anchoring TRENCHING EQUIPMENT UTV1200 SUNFISH MOONFISH STARFISH TRENCHING ROV PLOUGHING VEHICLE INTERTIDAL TRENCHING VEHICLE ELEVATED EXCAVATOR Operating weight: 48 tonnes Power: 900 kw (1200 hp) Max. trenching depth chain cutter: 1.6 m Max. trenching depth jetting mode: 3 m Max operating depth: 500 m Operating weight: 130 tonnes Power: 200 kw V-shaped plough width: 460 mm Max. burial depth: 1.5 m Max. operating depth: 9.5 m Operating weight: 121 tonnes Power: 600 kw Chain cutter trencher width: 400 mm Max. burial depth: 6 m Max. operating depth: 250 m Operating weight: tonnes Power: kw Operating water depth: m V MAY

25 OFFSHORE SERVICES JAN DE NUL GROUP OFFSHORE RENEWABLES

26 INSTALLATION OF OFFSHORE WIND FARMS Jan De Nul Group is a leading expert in dredging and marine construction activities, and provides services related to the installation of offshore wind farms and related subsea export cables and umbilicals. The combination of design and detailed engineering and all aspects of civil works, dredging and rock and marine installation enable Jan De Nul Group to offer a total package on an EPC basis. Clients worldwide are increasingly seeking an all-in solution for their projects with an integrated approach of design and execution. Jan De Nul Group recognises this trend and offers clients complete packages. The group is well equipped for the installation of cables and Gravity Based Foundations, as well as for the installation of scour protection and other seabed preparation services. For the design and fabrication of the various components, Jan De Nul has its own inhouse design and engineering and quality control departments. Thanks to the investment in the jack-up installation vessel Vole au vent Jan De Nul Group can install all kinds of foundations, as well as the latest generation of wind turbines, offering a unique all-in solution to the offshore market. The jack-up vessel Vole au vent was specifically built to install offshore wind parks and is one of the largest of its kind in the world. The large cargo deck space and payload and the lifting capacity of its crane up to 1,500 tonnes enable swift and safe installation of the heaviest foundations and other components of offshore wind parks. The vessel is 140 m long and is equipped with four legs to lift itself above the sea level for stable working without impact of the waves. JAN DE NUL GROUP S IN-HOUSE ENGINEERING DEPARTMENT ALLOWS TO DESIGN, BUILD AND INSTALL ENTIRE OFFSHORE WIND FARMS. 2 OFFSHORE RENEWABLES

27 NOBELWIND, BELGIUM The EPCI project included the design (engineering), procurement, construction and offshore installation of 51 monopiles for 50 wind turbines and one offshore high voltage substation (OHVS), as well as the supplying and installation of the scour filter and armour layer and the installation of 50 wind turbine generators. The entire area of the park is 22 square kilometers and will provide an annual CO 2 reduction of approximately 197,000 tonnes. Monopiles The monopiles were manufactured in Rostock, with a variable length up to 77m and weights ranging from 430 to 800 metric tonnes. They have proven to be an efficient solution in case of reasonable ground conditions and in water depths up to 35 meters, which is the case in the Bligh Bank concession. Transition Pieces The transition piece (TP) is situated in the transition area between the salty water, the drying air, the heating sun or being in icy winters and it is therefore exposed to extremely corrosive conditions. The TP therefore requires special care with regard to corrosion protection, which is subject to a particular high attention on quality control. Typically the TP contains amongst other a boat landing and a work platform, the latter being assembled in the marshalling harbour of Ostend after their arrival. Offshore installation process The process of installation starts with the construction of the filter layer for scour protection by a rock installation vessel. After that the Heavy Lift Jack-up Vessel Vole au vent was equipped with a pile gripper holding the monopile in place after being upended and lifted with special lifting tools, and after which the hydrohammer drove the pile through the filter material of 1-200mm. Once the pile was in position, the TP was bolted on to the MP and the annular void between the grout skirt of the TP and the MP was filled with grout for corrosion protection reasons. The Vole au vent installed 4 MP s and 4 TP s per installation cycle. After the installation of the temporary TP cover, the TP is left behind until the cables are installed. Then the armour rock is placed as a finalisation of the scour protection. Wind Turbine Generators The last stage in the scope was the transport and installation of the Wind Turbine Generators (WTG). The Vole au vent is for this purpose deployed again and equipped with custom made seafastenings in order to accommodate 8 entire WTG s consisting of towers, nacelles and blades. The wind turbines were supplied, installed and maintained by the company MHI Vestas Offshore Wind and produce 3.3 MW each, totalling to 165 MW. These turbines were loaded in Esbjerg (Denmark). 3 OFFSHORE RENEWABLES

28 BUTENDIEK, GERMANY Early 2014 the construction of the German offshore wind farm Butendiek, located in the North Sea west of Sylt, started. Butendiek comprises 80 turbines with each 3.6 MW, resulting in a total capacity of 288 MW. Jan De Nul Group was in charge of the installation of scour protection around the 80 monopiles. The rock was purchased at a Norwegian quarry. The filter rock, approximately 71,000 ton, was loaded at the quarry and installed by the Fall Pipe Vessel Simon Stevin. The armour rock, approximately 123,000 ton, was installed by the vessel Tiger. This vessel used to be a Split Hopper Barge but has been equipped with an inclined fall pipe to execute the rock installation works closely to the offshore structures. Jan De Nul Group has an in-house engineering department that can design new equipment or works out modifications to existing equipment. That is why Jan De Nul Group can promptly respond to specific needs, wherever in the world these may arise. For the rock installation work in Butendiek the vessel Tiger was transformed into a Dynamic Positioned Rock Installation Vessel with inclined fall pipe in only a few weeks time. 4 OFFSHORE RENEWABLES

29 GLOBAL TECH I PROJECT, GERMANY Global Tech I is one of the first offshore wind farms being built in the German North Sea. The wind farm s array consists of 80 wind turbines each with a capacity of 5 MW adding up to a total installed capacity of 400 MW. Jan De Nul Group was contracted to install the scour protection around the offshore substation. With a rock carrying capacity of 32,000 ton, the Fall Pipe Vessel Simon Stevin was the ideal vessel for the job. In order to position the inclined fall pipe under the center of the substation, the vessel had to approach the substation to a minimum distance of 10 m and the IFP had to be redesigned to fit over and in between the crossbeams of the substation. GUNFLEET SANDS, UK The offshore wind farm Gunfleet Sands in the UK has a total capacity of 172 MW. Jan De Nul Group was in charge of the scour remediation around 27 foundations, export cables, and the substation. The works were executed using the vessel Tiger, equipped with an inclined fall pipe. Over 50,000 tonnes of rock was needed for the job. 5 OFFSHORE RENEWABLES

30 KAREHAMN PROJECT, SWEDEN For the Karehamn offshore wind farm in the Swedish part of the Baltic Sea, 16 foundations were required for the 3 MW turbines. Jan De Nul Group was awarded the design, construction and installation of these foundations. All foundations were constructed on top of two large barges in the port of Zeebrugge (Belgium) in over a period of only 5 months. Because of the varying water depths in the Baltic Sea, the height of the cylindrical part had to be uniquely designed. The height of the elements ranges from 15 to 25 m with the heaviest element weighing approximately 1,940 tons. The seabed had been prepared before installation of the foundations. The first half a meter of the seabed was removed. In order to provide an even cushion layer for the foundations, a gravel layer was installed. To level the cushion layer, a levelling system has been developed by means of a levelling beam installed on the Cutter Suction Dredger Vesalius. This allowed for gravel bed foundation to be levelled within the design tolerances of 45 mm. With the gravel bed installed and levelled, the Heavy Lift Vessel Rambiz lifted the foundations off the barges and installed the foundation to within 30 cm of the theoretical position. After installation, they were ballasted so they could withstand the forces of waves and currents and carry the actual wind turbine. The shaft of the foundation was filled with magnadense crushed iron ore. The other compartments were filled with crushed iron ore, and finally a layer of heavy quarry stone was placed as a top capping layer in order to provide scour protection. Stones of up to 130 kg were placed in the ballast caissons by means of the inclined fall pipe of the vessel Simon Stevin positioned in DP2 mode. To prevent the gravel bedding layer from being washed away, an anti-scour quarry stone layer was installed around the external edge of each foundation. TAHKOLUOTO, FINLAND Wind power producer Suomen Hyötytuuli Oy has chosen Jan De Nul as the main contractor of marine construction for the new offshore wind farm in Pori, Finland. The world s first offshore wind farm designed for icy conditions will have ten 4 MW turbines that will be taken in use during the autumn of Jan De Nul Group will be responsible for dredging, seabed preparation work, and the installation of foundations and wind turbines with the installation vessel Vole au vent. 6 OFFSHORE RENEWABLES

31 OFFSHORE RENEWABLES REFERENCE LIST START DATE LOCATION PROJECT NAME 2018 Germany Borkum Riffgrund 2 - Foundations 2018 Germany Borkum Riffgrund 2 - Export Cable 2018 Germany Trianel - Export Cable 2017 United Kingdom Blyth Offshore Demonstrator Denmark Gravity Based Sub-Structures for AC and Combined Grid Solution CGS Offshore Substations (OSS) for Kriegers Flak Finland Tahkoluoto OWF 01/04/2016 Belgium Bligh Bank Phase 2 - Nobelwind OWF 16/01/2016 United Kingdom Walney - Cable Repair 01/04/2016 United Kingdom Race Bank Offshore Wind Farm (ROW) 01/05/2016 United Kingdom Burbo Bank Extension Offshore Wind Farm (BBW02) 17/09/2014 United Kingdom Rock Installation Services Moray Offshore 25/08/2014 United Kingdom Gunfleet Sands OWF Contract for Rock Installation 05/08/2014 Germany Global Tech One 04/04/2014 Belgium Alstom Belwind Demonstration Project 01/03/2014 Germany Butendiek 22/10/2013 United Kingdom Westermost Rough OWF 01/03/2013 Belgium Northwind Offshore Wind Farm Project 31/12/2012 Belgium Alstom Belwind Demo Project: installation of Scour Protection 07/09/2011 Sweden Karehamn Offshore Wind Farm Foundations 11/03/2002 Denmark Horns REV Wind Mill Park 7 OFFSHORE RENEWABLES

32 OFFSHORE CONSTRUCTION VESSELS VOLE AU VENT WIND TURBINE INSTALLATION VESSEL Main crane capacity: 1,500 tonnes Max. water depth for jacking: 50 m Max. cargo weight: 6,500 tonnes Cargo deck: 3,535 m² SIMON STEVIN Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes JOSEPH PLATEAU Rock carrying capacity: 31,500 tonnes Max. discharge depth: 2,000 m Optional turntable capacity: 3,500 tonnes AHC crane capacity: 40 tonnes ISAAC NEWTON CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 7,400 tonnes + 5,000 tonnes AHC crane capacity: 40 tonnes WILLEM DE VLAMINGH CABLE AND UMBILICAL INSTALLATION VESSEL Turntable capacity: 5,400 tonnes AHC crane capacity: 40 tonnes ADHÉMAR DE SAINT-VENANT TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes DANIEL BERNOULLI TRENCHING AND OFFSHORE SUPPORT VESSEL Dynamic Positioning: DP2 Rock carrying capacity: 4,750 tonnes Max. discharging depth: 600 m Optional turntable capacity: 4,000 tonnes AHC crane capacity: 25 tonnes LA BOUDEUSE Dynamic Positioning: DP Rock carrying capacity: 3,300 tonnes Max. discharge depth: 130 m Equipped with vertical fall pipe ROV and inclined fall pipe TIGER Dynamic positioning: DP Rock carrying capacity: 3,500 tonnes Equipped with inclined fall pipe for large diam. rock POMPEI SIDE STONE INSTALLATION VESSEL Dynamic positioning: DP Rock carrying capacity: 1,350 tonnes Mooring system: 6 point anchoring TRENCHING EQUIPMENT UTV1200 SUNFISH MOONFISH STARFISH TRENCHING ROV PLOUGHING VEHICLE INTERTIDAL TRENCHING VEHICLE ELEVATED EXCAVATOR Operating weight: 48 tonnes Power: 900 kw (1200 hp) Max. trenching depth chain cutter: 1.6 m Max. trenching depth jetting mode: 3 m Max operating depth: 500 m Operating weight: 130 tonnes Power: 200 kw V-shaped plough width: 460 mm Max. burial depth: 1.5 m Max. operating depth: 9.5 m Operating weight: 121 tonnes Power: 600 kw Chain cutter trencher width: 400 mm Max. burial depth: 6 m Max. operating depth: 250 m Operating weight: tonnes Power: kw Operating water depth: m 8 OFFSHORE RENEWABLES V MAY