Boskalis Nordic Today No. 01/2019

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BOSKALIS AREA NORDIC | INFORMATION MAGAZINE NO. 01 / 2019

INTERNATIONAL DREDGING AND MARINE EXPERTS

IN THIS ISSUE

COVER PHOTO MUSSALO HARBOUR D TERMINAL, INSTALLATION OF QUAY ELEMENTS PHOTO: MARKKU SALONEN

MANAGING DIRECTOR’S COLUMN THOUGHTS ON THE WAYS OF THE WORLD

PRECONSTRUCTING NEW HELSINKI KOIRASAARET AND STANSVIKINRANTA PRECONSTRUCTION CONTRACT

CUSTOMER’S NEWS PROJECT DIRECTOR JUKKA REPO, CITY OF HELSINKI

STOCKHOLM NORVIK PORT NORVIK PORT QUAYS IN THE FINISHING STRAIGHT

PERSONNEL NEWS TWO LEADING PATHFINDERS IN MARINE CONSTRUCTION

MUSSALO HARBOUR, EXPANSION OF D TERMINAL EXCEPTIONALLY MASSIVE QUAY ELEMENTS

PERSONNEL NEWS BARGE MASTER ARI NÅHLS

SEABIRD PHASE II MEGAPROJECT, INDIA INTERNATIONAL UNDERWATER DRILLING AND BLASTING

BOSKALIS AREA NORDIC Boskalis Area Nordic has strong experience and special know-how in harbour and marine construction. Specialisation in different types of services, such as underwater drilling and blasting, port construction and various dredging methods in different soil types, has made us one of the leading contrac- tors in the Nordic countries.

WORK SITES TODAY | SUMMER 2019

TERRAMARE SALARIED EMPLOYEE DAYS EVENT 2019

BACK COVER CONSTRUCTION DIVER’S JUMP PHOTO SERIES: MARKKU SALONEN

The Boskalis Area Nordic companies mentioned below provide all the services in their region.

TERRAMARE OY | FINLAND BOSKALIS SWEDEN AB | SWEDEN ROCK FALL COMPANY LTD | UNITED KINGDOM TERRAMARE EESTI OÜ | ESTONIA

BOSKALIS NORDIC TODAY

OUR COMMON WEBSITE: BOSKALIS.COM/NORDIC

INFORMATION MAGAZINE NO. 01 / 2019

EDITOR–IN–CHIEF Nina Kesseli P. +358 9 6136 2618 F. +358 9 6136 2701 nina.kesseli@boskalis.com

EDITING & LAYOUT Markku Salonen

Our parent company is the globally operating Royal Boskalis Westminster N.V. The listed company operates in 90 countries on six different continents.

NORDIC ECOLABEL 4041 0750 Ecolabelled Printing Paper

MANAGING DIRECTOR’S COLUMN

THOUGHTS ON THE WAYS OF THE WORLD

M y summer vacation has just got off to a good start. I am writing this piece on board a flight, on a celebratory trip to Southeast Asia. My son is playing games and my wife’s main interest right now is a movie showing on screen. Why are we on our way to Asia for a couple of weeks, visiting Singa- pore, Indonesia and Malaysia? I found inspiration for the trip last Christmas when I read Hans Rosling’s excellent book Factfulness. It revealed, among other things, that Asia’s population will rise by around one billion over the next 20 years, roughly equivalent to the current total population of Europe. It will be good to see things with my own eyes and get an update on what the bustle and con- struction are like in Asia right now. Many familiar Boskalis colleagues are currently there, building new harbours and carrying out major rock-filling projects for the residential needs of growing coastal cities. Terramare has also been involved in a couple of underwater drilling and blasting projects in the region, and new projects are constantly being planned. Asia’s rapid population growth and its economic impact are also clearly visible in Finland. On many mornings I have found myself on business trips travelling among Asian tourists and business travellers at Helsinki-Vantaa Airport. Also, in Lapland in early spring, one no longer needs to compete only with impatient Finnish skiers; many different kinds and more peaceful skiing styles can also be seen on the ski trails. It is well worth marketing Finland as a bridge to Asia and to continually develop transport connections by land, sea and air, so that more and more euros find their way to Finland along with Asian tourists and investors. Correspondingly, good logistics and transport connections will support the competitiveness of Finnish products in expanding markets. Good examples of exploiting growth potential and opportunities in Finland include, for ex- ample, several bioproduct mill projects, the planning of high-speed rail links between growth centres, and an innovative tunnel project between the Helsinki Metropolitan Area and Tallinn. From the perspective of marine construction, all investments made in tour- ism, industry and logistics always provide fine opportunities also for Ter- ramare. Let’s be bold and innovative, and support projects being planned on all fronts with Finnish interests in mind. Right now, we still have five hours until the plane lands. I guess I better close my eyes and gather strength for this family vacation.

Wishing a fine summer to you all!

Hannu Tomperi

The Boskalis WAY OF WORKING quality management system aims to achieve operational excellence with a clear focus on safe and sustainable solutions and a consistent client approach. More than just systems and procedures, the Boskalis Way of Working provides a consistent approach towards the initiation, planning, execu- tion and completion of our projects. At the same time it promotes diversity in our teams with experts, facilitates innovation whilst caring for people and the environment with a commitment to act with respect and integrity. This is how we create new horizons for all our stakeholders.

04 CITY OF HELSINKI | KRUUNUVUORENRANTA – KOIRASAARET AND STANSVIKINRANTA PRECONSTRUCTION CONTRACT PRECONSTRUCTION FOR NEW HELSINKI RESIDENTIAL AREA

TEXT & PHOTOS: MARKKU SALONEN | PHOTOS 01 JA 05: TERRAMARE | GRAPHIC 02: CITY OF HELSINKI

T erramare is implementing at Kruunu- vuorenranta, Helsinki, a preconstruc- tion contract that will facilitate the building of a new seaside residential area and milieu. The contract includes sea-filling in the Koirasaaret area and the construc- tion of a new swimming beach at Stansvi-

kinranta. The work was launched in April this year and will take approximately one year to complete. Terramare started the contract with dredg- ing work, in which soft masses consisting mainly of clay have been removed from the sea-filling and swimming beach areas.

The dredging has been carried out by Ter- ramare’s grab dredger Kahmari 2. The towable barges SCG 3, SCG 4 and SCG 6 served as loading vessels. Environmental dredging was also done in the contract, in the secondary basins of an oil harbour for- merly located at the site. The sea-filling to be implemented for future Koirasaaret residential district covers an area of 6.7 hectares. Both blasted rock and crushed aggregate are used for the filling. “The blasted rock used in the sea-filling of the Koirasaaret area is obtained from the city’s blasted rock storage facility, conven- iently located only a couple of hundred me- tres away, to which blasted rock has been brought over the years from worksites in the Helsinki Metropolitan Area. And there HELSINKI EXPANDED BY SEA-FILLING

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

A new residential area with wonderful sea views will be built at Kruunuvuorenranta, Helsinki. Terramare is implementing a diverse preconstruction contract commissioned by the City of Helsinki, including site clearance and dredging, extensive sea-filling and the construction of a new swimming beach.

HELSINKI

WORK AREA

CENTRE

1 km

01 is more than enough blasted rock – around one million cubic metres,” says Terramare Site Manager Markku Pöyhönen. “A total of 900,000 cubic metres of blast- ed rock will be used at the location. The blasted rock filling is the responsibility of a subcontractor, E. Hartikainen Oy, which both crushes and transports the blasted rock. The blasted rock is transported to the site using high-performance trucks, of which the most powerful are the Caterpil- lar 777 series. When loaded, the trucks in question weigh 160 tonnes,” explains Pöyhönen. The sea-filling includes 40 metres wide stone embankments and erosion protec- tion, implemented on the edges of the fill- ing area, after the completion of which rock-filling continue in the interior part of the site. Deep compaction of the rock fill will be done from onshore by dynamic compaction. After completion, the sea-fill-

ing, including surface crushed aggregate, will be 1.5 metres above sea level. In the centre of the fill area a canal traversing the residential area will be excavated later. “Alongside the filling, which is progress- ing smoothly, we are also carrying out cleaning work. We have delimited and

protected the area with a floating protec- tive pontoon screen, which prevents occa- sional rubbish found amidst the rock waste from spreading into the surrounding water- ways. Rubbish is collected from the shores and sea of the contract area, sorted and transported for appropriate waste process-

VIEW OF THE KOIRASAARET SEA-FILLING AREA. In the background, the grab dredger Kahmari 2. The filling area, surrounded by a floating protective screen. ARTIST’S IMPRESSION OF THE NEW KRUUNUVUORENRANTA residential area. A) Koirasaaret residential area to be built in the sea-filling area, B) Kruunusilta bridge, to be built later, C) New Stansvikinranta swimming beach. SITE MANAGER MARKKU PÖYHÖNEN MONITORS that the area’s beautiful nature is not damaged or disturbed in connection with the work.

INTERNATIONAL MARINE EXPERTS | BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

CITY OF HELSINKI | KRUUNUVUORENRANTA – KOIRASAARET AND STANSVIKINRANTA PRECONSTRUCTION CONTRACT

ing. Dust accumulation on the transport routes used in the filling work is also pre- vented, if necessary, by water sprinkling,” says Pöyhönen.

out by Terramare’s floating work pontoon Bolle VIII, which will be towed and assisted by the multipurpose vessel Eija. “This half kilometre long swimming beach will be filled with pure natural sand. In ad- dition to the beach area filling, we will cre- ate a sandy sea bottom, extending around 20 metres seaward from the shore. The outermost edge of the sandy bottom will be at a depth of around two metres. Before sand filling, an underwater erosion slab, protecting the site, will be constructed at the seaward edge,” says Pöyhönen. ATTENTION PAID TO ROCKS, ISLETS AND TREES AT THE SITE Care and attention will be paid to the natural

THE SEA-FILLING IS CARRIED OUT USING high-performance trucks, of which the most powerful is the Caterpillar 777 series. This truck weighs 160 tonnes when fully loaded. THE BLASTED ROCK USED IN SEA-FILLING is obtained mainly from the Helsinki blasted rock storage facility, situated only 200 metres away from the site. The facility has around one million cubic metres of rock waste. rocks, islets, shoals and trees of the area. “Engraved names dating back to the 19th century can be found in the rocks of the shore, and some of the pines in the shore area may be up to 400 years old. It is part of our agreement that rocks, is- lets and shoals are delimited outside the contract area, and that they are protected from any kind of damage,” adds Pöyhönen in conclusion. The preconstruction contract will be com- pleted in 2020. The residential area to be built in the sea-filling area will be complet- ed by 2030.

NEW STANSVIKINRANTA SWIMMING BEACH

Work on the preconstruction contract’s Stansvikinranta swimming beach will be implemented from the sea. Reed clearance and dredging at the location will result in the creation of the beach area, implement- ed with a sea-facing erosion embankment and sand filling. A total of 70,000 cubic metres of sand, transported by sea from Porvoo, will be used in filling the swimming beach. Sand transportation will be carried

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

CUSTOMER’S NEWS | PROJECT DIRECTOR JUKKA REPO, CITY OF HELSINKI

SEASIDE RESIDENTIAL AREA IN A MAGNIFICENT SETTING P roject Director Jukka Repo of the City of Helsinki’s Urban Environ- ment Division is satisfied with the

start made to the Koirasaaret and Stans- vikinranta preconstruction contract, being implemented at Kruunuvuorenranta. “I am delighted that this fine project was launched on time this spring, as soon as the ice left in April. This preconstruction contract is the first phase of an extensive project in which a new residential district will be built in the Koirasaaret area at Kruunuvuorenranta for a total of 13,000 residents. The area will also provide 800 new jobs. The project will be completed by 2030,” says Repo. “The project will not just consist of new homes, however; the intention is also to create an attractive living environment. Great attention has been given to this in planning the new seaside residential area. Canals, small boat berths, beach boul- evards, diverse services, and outdoor and recreational opportunities, for example, will be implemented in the area. At the nearby Stansvikinranta, a half kilometre long swimming beach, open to all, will be created, opening up magnificent sea- scapes,” continues Repo. Kruunuvuorenranta is only three kilome- tres from Helsinki city centre, as the crow flies. In the future, transport connections will improve significantly. “In the future, it will be possible to reach Kruunuvuorenranta from the city centre by tram in quarter of an hour, when the Kru- unusilta bridge project connects Laajasalo, Kruunuvuorenranta and Kalasatama. The bridge project will therefore bring Kruunu- vuorenranta, which is currently reached by a rather circuitous route, into the heart of the inner city,” explains Repo. The name Kruunuvuorenranta is derived from the old name Kruunuvuori given to the high shoreside rocks located there. Many of Helsinki’s islands, for example Katajanokka, Korkeasaari and Suomen-

TEXT: MARKKU SALONEN | PHOTO: CITY OF HELSINKI

linna can be seen from there. “In the current project, it is very important that the area’s old rocks, islets and trees are protected from damage. In other re- spects, too, the project will be implement- ed so that the environment is exposed to as little harm as possible. At the same time, however, new Helsinki will be created, be- cause the project will result in an increase in land area by a total of 10 hectares,” says Repo with a smile.

HELSINKI NEW HORIZONS: www.uuttahelsinkia.fi

INTERNATIONAL MARINE EXPERTS | BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

08 PORTS OF STOCKHOLM | STOCKHOLM NORVIK PORT | QUAY WORKS STOCKHOLM NORVIK PORT QUAYS IN THE FINISHING STRAIGHT

TEXT: MARKKU SALONEN | PHOTOS: TERRAMARE

T he quay work at Norvik’s new mod- ern container, RoRo and distribu- tion port has entered the finishing straight. Terramare began the contract in 2017. The contract has comprised a total of three quay sections, with a total length of 1,140 metres. Of the quays, two have steel pile foundations and one is a retain- ing quay wall. The quays will be delivered fully equipped with deck structures, includ- ing two stern door berths, surfacing work and harbour crane rails. “This is a huge worksite, where we have also made a major contribution. The scale and challenges have been enormous. A total of 850 steel piles, with lengths vary- ing between 6 and 40 metres have been installed, as the water was really deep in

places. Hundreds of anchors have been installed at the site locations, and 69 over 12-metre-high elements were slipform cast for the retaining quay wall. One of the challenging aspects has been the founda-

tions of the two stern door berths, which were installed below average sea level,” says Terramare Site Manager Arto Kontio. Quay work has been carried out in condi- tions in which measures are restricted by

STOCKHOLM

NORVIK PORT

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

The location and naturally deep fairways of Norvik’s new port will make the port accessible to the Baltic Sea’s largest cargo vessels. Terramare is implementing a total of 1,140 metres of quay at the port.

STOCKHOLMS HAMNAR

the environment. The turbidity prevention period, which prevails in the area from the beginning of April to the middle of Septem- ber, means dredging is not possible. Dur- ing piling, turbid water has been removed at worksites in real time. “Constraints have presented their own challenges, but the weather, on the other hand, has favoured our major contract. We have completed the work stages, and the 437-metre steel pile foundation quay section 3−4 was delivered in May. The two other quay sections, the 361-metre retain- ing quay wall 5−6 and the 342-metre steel pile foundation quay 7, will be handed over by September,” says Kontio. Many of Terramare’s equipment units have been used in the Stockholm Norvik

Port quay contract, including backhoe dredgers, grab dredgers, drill platforms, work pontoons, piling units, self-propelled barges, slipform casting equipment and floating cranes. The logistics and servic-

ing of the equipment and accessories have played a significant role in the extensive, over two-year-long contract.

NORVIK PORT QUAY CONTRACT (PHOTO FROM MAY) A) Quay berth 3−4: 437 m, depth 17 m, steel pile foundation B) Quay berth 5−6: 361 m, depth 11 m, retaining quay wall C) Quay berth 7: 342 m, depth 11 m, steel pile foundation

VIEW OF STEEL PILE FOUNDATION QUAY berth 7’s stern door ramp site, in mid-April 2019.

THE LONGEST OF THE QUAYS, THE 437-METRE QUAY berth 3−4, with its massive deck structures. Pictured is the instal- lation of quay accessories under way.

INTERNATIONAL MARINE EXPERTS | BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

PERSONNEL NEWS | JARMO YLETYINEN AND TAPIO LEINONEN

TWO LEADING PATHFINDERS IN MARINE CONSTRUCTION

T erramare is renowned for the long and committed employ- ment relationships of its personnel. The most notable exam- ples of this have been the company’s former Managing Di- rector Jarmo Yletyinen and Development and Finance Director Tapio Leinonen , who have served in Terramare’s management team since its founding. After long and commendable journeys, both will retire in autumn this year. Both have careers of nearly 40 years behind them, during which they have had significant roles in developing the marine construction industry into what it is today. “Time has passed in a flash, but when I look at the development of the marine construction industry over the decades, I can say that many now generally established working methods are to a large extent the result of development work by Terramare personnel,” says Jarmo. Tapio Leinonen, who worked in his time as Development Director, agrees with Jarmo.

“Development work has always had a strong role in Terramare’s activities. Significant, well-established innovations in marine con- struction have included, among other things, retaining quay wall and underwater drilling and blasting methods as well as the ap- plication of information technology to dredging. Goal-directed development work still continues, and it also has a significant role in international operations, such as in the underwater drilling and blasting services that Terramare nowadays provides worldwide,” says Tapio. Terramare’s international status is significant. In addition to op- erations in its domestic market, in northern waters around the Nordic and Baltic countries, international projects implemented in cooperation with its parent company Boskalis have strengthened the company’s position as an international operator. “Our cooperation with the parent company has been extremely constructive and has opened up new opportunities in international

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

STALWART PROFESSIONALS, IN WHOM WE CAN ALWAYS TRUST’ ‘ TERRAMARE’S PERSONNEL

JARMO’S AND TAPIO’S WORK WILL BE CONTINUED BY

markets. In our own market, our role in the group is also substan- tial, because our diverse marine construction services and strong local knowledge are our company’s strengths,” explains Jarmo. The retirement of both Jarmo and Tapio has been anticipated well in advance. The Terramare professionals who take over their areas of responsibility are already well versed in their duties, and the work will continue as normal in the same dynamic spirit as before. “I would certainly say that Terramare has always had an excel- lent sense of joint effort and operational focus. Evidence for this is also found in the fact that many Terramare personnel who have al- ready retired, as well as people from predecessor companies, of- ten come together to share their experiences. Marine construction is an exceptional industry, whose motivating challenges, diverse working methods and specialised technology are attractive factors in uniting people in their everyday work,” says Jarmo. “I believe that the key factors in creating a good sense of team- work and an effective working atmosphere have been a fair divi- sion of responsibilities and a genuine openness in which discussion and common understanding of the handling of issues have always been important values for us. Questions about anything are wel- come, and solutions have always been found,” says Tapio. All at Terramare wish Jarmo and Tapio a rewarding retirement. When other personnel are asked to sum up their characters, both respected management figures are described as reliable and well- mannered gentleman, who have always taken others into consid- eration, and both of whom have always maintained good control over things. Their sporty nature is also not overlooked. “Well, now that retirement is upon me, there will a lot of time for sport and exercise, particularly for skiing. I plan to move to North Karelia and turn my attention to nature-related pursuits, including hunting, which I’ve never had time for before. I’ve already passed the hunting exam,” says Jarmo. “Skiing is also one of my favourite hobbies, but I enjoy golf, too. I plan to play it more actively than before, while also travelling more. And, of course, I’ll also have more time for my three fine grandchildren. I have noticed that these three energetic boys enjoy the company of their grandpa – and my time with them keeps the mind sharp,” says Tapio. Are Jarmo and Tapio leaving their work behind them, or will we still hear from them in the future? “It may be that we will still remain in the picture in some way or another, and always when necessary,” they both conclude with a smile.

HANNU TOMPERI MANAGING DIRECTOR (SINCE 2017)

PETRI NIKULA FINANCE MANAGER (SINCE 2017)

TOMMI NIEMI DIRECTOR, DEVELOPMENT, PROCUREMENT & SHE-Q

TEXT & PHOTO: MARKKU SALONEN | PHOTOS PAGE 11: NINA KESSELI

INTERNATIONAL MARINE EXPERTS | BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

12 EXCEPTIONALLY MASSIVE QUAY ELEMENTS PORT OF HAMINAKOTKA | MUSSALO HARBOUR, EXPANSION OF D TERMINAL

WWW.HAMINAKOTKA.COM

VIEW OF THE QUAY ELEMENTS IN 2018

T erramare Site Manager Matti Jus- lenius is supervising the installation of quay elements at the Mussalo Harbour D terminal worksite. A 220-metre retaining quay wall is under construction. Calm spring weather favours the precise measurement work on the massive ele- ments and their installation on the levelled

quay foundation. “For Terramare, this is typical retaining quay wall work, but what makes this ex- ceptional is the larger than usual size of the quay elements,” explains Juslenius. “The slipform cast 300-tonne K elements of the future quay are 18.8 metres high, as are the 140-tonne intermediate S ele-

ments. These elements, of which there are 53 in total, are equivalent in height to a five-storey apartment block. The dimen- sions set their own challenges. We must be even more attentive to measurement and installation when such huge elements are involved. The minimum depth in front of the quay, −17.5 metres, also presents

TEXT & PHOTOS: MARKKU SALONEN

TERRAMARE SITE MANAGER MATTI JUSLENIUS supervises the installation of the huge quay elements. In the background is the floating crane Maja, with a 18.8-metre-tall K element on its deck. Behind the crane, the backhoe dredger Attila is busily engaged in harbour basin deepening work. THE INSTALLATION OF THE HUGE QUAY ELEMENTS requires precise measurement and teamwork. In addition to measurement experts, crane and surfacing personnel as well as construction divers are also parti- cipating in the installation work.

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

a challenge in implementing the erosion slab cast at the bottom of the quay,” says Juslenius. The elements, which were slipform cast last year, awaited installation over winter at their casting location on a broad end embankment in Mussalo Harbour’s A and B quay areas. Their size means that they have to be lifted, transported and installed using a high-performance floating crane. “We are carrying out the transport and installation of the elements with the self- propelled floating crane Maja, which has a rotating boom. It facilitates precise con- trol of the massive elements. The crane can also transport elements on its own deck, which increases the efficiency of transfer work,” says Juslenius. “The installation of the elements is im- plemented as teamwork, in which meas- urement and surface personnel and con- struction divers are involved in addition to crane operators. Although these huge ele- ments are an impressive sight above sea level, ultimately they will be hidden after installation under the waves on the quay line,” adds Juslenius. The 220-metre retaining quay wall is part of an extensive contract in which a completely new D harbour section will be built for the use of an UPM pulp terminal, which will start operating beside it. The contract includes, in addition to the quay work, extensive dredging of the harbour basin to a minimum depth of −17.5 metres, and a 620 metres long, four metres high breakwater. “I’m responsible for the quay worksite. Implementation of the dredging and break- water is the responsibility of our Site Man- ager Reijo Kultalahti . All in all, this is an extensive site where professionalism, experience and problem-solving ability are required. And it is precisely these fac- tors that make this a motivating and fasci- nating project,” concludes Juslenius. In addition to backfilling and a coping beam, the D section quay work includes both surfacing work and full installation of quay accessories. Erosion slabs will be im- plemented in front of the quay. There quay will be completed by the end of October this year.

TEXT & PHOTO: MARKKU SALONEN

TERRAMARE PERSONNEL NEWS | BARGE MASTER ARI NÅHLS:

RELAXED CONFIDENCE AND HUMOUR ARE THE SECRETS OF A GOOD SKIPPER´ B lasted rock filling of the new breakwater at Mussalo Harbour’s D section is being carried out using humour are secrets of a good skipper – it pays to keep calm,” says Nåhls.

“The challenging nature of the job makes the work interesting, however. Of course, there’s a lot of technology to help, such as sounders, positioning systems, autopilot and powerful thrusters, but vigilance is an absolute requirement as far as surrounding traffic, other work vessels and the weather are concerned. A sharp eye and anticipa- tion are positive qualities for a skipper, and go a long way towards doing the job well. In hard winds, heavy swells and challenging visibility, you have to consider whether conditions are safe – and that’s the barge master’s decision. On the other hand, perfectly clam weather, beautiful views and long sailing journeys are highly rewarding,” says Nåhls with a smile. Nåhls, who comes from Vaasa, also enjoys the sea in his leisure time, when he sails his own boat to his archipelago cabin. “My work for Terramare is periodical, so the occasional longer leisure-time inter- ludes enable me to enjoy relaxing moments sailing in the Vaasa archipelago and at my cabin. I always head there when I’m on a break from my skipper’s work,” says Nåhls in conclusion, as he sets off to fetch a new load of blasted rock.

barges, one of which is operated by the experienced Barge Master Ari Nåhls . Assisted by the backhoe dredger Nordic Giant, the large barge Terra 1, loaded with blasted rock, approaches the breakwater filling location. The vessel’s big split-hop- per pontoons open and the blasted rock falls into the precisely determined sector. The skipper, who has been in Terramare’s service for two decades, has experience ranging from the Mediterranean to north- ern coastal areas. Challenging projects and experience of different types of ves- sel have established Nåhls as a respected professional. “These kinds of split-hopper barges that float on pontoons are challenging to op- erate, because loaded or empty they be- have like different vessels. When empty, the vessel it is susceptible to winds and when loaded its steering requires anticipa- tion, particularly in shallow waters. Also, the composition of the cargo, whether it is solid blasted rock or loose silt, affects the stability of the vessel. An additional chal- lenge is posed by shallow shore locations, where propeller bottom contacts must be avoided. Accomplished skill and experi- ence, good awareness of the vessel’s be- haviour as well as relaxed confidence and

BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

INDIA

Karwar

SEABIRD PHASE II MEGAPROJECT, INDIA TERRAMARE’S INTERNATIONAL UNDERWATER DRILLING AND BLASTING SERVICES 01

T erramare has participated on the west coast of India in the Seabird Phase II megaproject, which is now in the finishing straight. The site is located in Karwar, Karnataka, where the Indian naval base INS Kadamba opened in 2005, after the completion of the first construction phase. In the Seabird Phase II project, launched in 2017, a new kind of naval base is being devel- oped by expanding existing harbour structures. The expansion will enable the more efficient stationing, operation and maintenance of fleet vessels. Seabird Phase II is a project of national significance for India. The project has been commissioned by the Indian Navy, assisted by the consultant firm Aecom. The extensive Seabird Phase II project also included underwater drilling and blasting, which was implemented by six Terramare hy- draulic drilling towers and other equipment, which were installed on the deck of a locally leased work pontoon. The underwater drilling and blasting project was the responsibility of the local company Boskalis Smit India LLP, which implemented the project in cooperation with Terramare, Rock Fall and Boskalis. The main contractor in the overall project is L&T – ISDPL JV, which is a con- sortium formed by the companies Larsen & Toubro Ltd and Interna- tional Seaport Dredging Pvt Ltd (ISDPL). Terramare barge masters Lassi Rantapelkonen and Henri Hulk- konen , from Finland, and the Boskalis barge master Andrew Gray , from Scotland, participated in the international underwater drilling and blasting team, which also included other experts from the UK, Portugal and India. Michael Seckington and Tristan Forsythe served as site managers. “I am very satisfied with the underwater drilling and blasting contract, which was implemented in a goal-oriented and profes- sional way. I would like to send my thanks for this to all members of our international team. I can also report that observations on the logistics and mobility of the underwater drilling and blasting

fleet and equipment were highly positive. It is great to know that, applying this effective concept, equipment can be packed for ship- ment and transported really quickly to sites anywhere around the world,” says Barge Master Lassi Rantapelkonen. “The working conditions were also nothing to complain about, even though the daily temperature was 30–35°C. The local traffic and culture are, of course, fascinating and lively compared to con- ditions back home, but this only enriches the field of experience in these international projects,” says Lassi. The underwater drilling and blasting included in the Seabird Phase II project was implemented in an area of 86,550 m 2 , from which a total of 63,811 m 3 of blasted rock was removed. The blasted rock was removed by Boskalis’ large 72-metre backhoe dredger Magnor (2,312 GT), which has a bucket capacity of up to 40 m 3 .

TERRAMARE’S HYDRAULIC DRILLING TOWERS, installed on a locally leased work pontoon.

BLASTED ROCK WAS REMOVED BY BOSKALIS’ large backhoe dredger Magnor.

BOSKALIS AREA NORDIC´S OPERATING PRINCIPLES ARE: WE DO WHAT WE PROMISE — RIGHT FIRST TIME — WORKING TOGETHER

BOSKALIS AREA NORDIC´S WORK SITES TODAY | SUMMER 2019

WORK SITE

PROJECT MANAGER SITE MANAGER

Marieholm tunnel project, Gothenburg, SWEDEN

Jouko Sederholm

Juhani Naukkarinen

Stockholm Norvik Port project, quay work, SWEDEN

Marko Saarelma

Arto Kontio /

Gerrit-Jan Kamphuis

Port of Raahe extension, dredging, FINLAND *)

Juha Seppälä

Olli Väätäjä

Port of Raahe extension, quay work, FINLAND *)

Juha Seppälä

Markku Sollo

Port of Kalajoki, extension of West Quay, FINLAND

Juha Seppälä

Viljami Elo

Koirasaaret and Stansvikinranta preconstruction, Helsinki, FINLAND

Juha Seppälä

Markku Pöyhönen

Port of Helsinki, extension of AP jetty with T7 dolphin, FINLAND

Marko Saarelma

Hannu Mäkelä

Expansion of Mussalo D terminal, dredging & breakwater, FINLAND

Jani Vyyryläinen

Reijo Kultalahti

Expansion of Mussalo D terminal, quay work, FINLAND

Jani Vyyryläinen

Matti Juslenius

10.

Seabird Phase IIA, underwater drilling and blasting, Karwar, INDIA *)

Colin Fergusson

Tristan Forsythe /

Michael Seckington

*) DELIVERED IN SPRING 2019

MAIN ACTIVITIES

MAP OF WORK SITES TODAY

Boskalis Area Nordic executes large and technically demanding projects reliably and effectively.

•

DREDGING AND RECLAMATION

3.−4.

•

UNDERWATER DRILLING AND BLASTING

•

PORT AND HARBOUR CONSTRUCTION

8.−9.

•

CONCRETE SLIPFORM CASTING

6.+7.

•

ENVIRONMENTAL CONSTRUCTION

•

SPECIAL PROJECTS

10. > India

TERRAMARE’S SALARIED EMPLOYEE DAYS 2019

GROUP 1

GROUP 2

TERRAMARE HELD A SALARIED EMPLOYEE DAYS EVENT AT SANNÄS MANOR IN MARCH. THANKS TO ALL OF THE PARTICIPANTS!

INTERNATIONAL MARINE EXPERTS | BOSKALIS AREA NORDIC | WWW.BOSKALIS.COM/NORDIC

JUMP SAFELY INTO THE SUMMER!

CONSTRUCTION DIVER’S JUMP | PHOTO SERIES: MARKKU SALONEN

www.boskalis.com/nordic

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