• 2018 July 17 14:23

    Jan De Nul launches ultra-low emission vessel Diogo Cão in China

    The 3,500 m³ Trailing Suction Hopper Dredger Diogo Cão was launched last Saturday at the Keppel Nantong shipyard in China, a subsidiary of Keppel Offshore & Marine, the Group said in a press release. This green vessel is the second of three 3,500 m³ hoppers to be launched, equipped with an exhaust gas treatment system filtering out and virtually eliminating many pollutants from the exhaust gases. In total, Jan De Nul Group ordered six such ultra-low emission Trailing Suction Hopper Dredgers, called Ultra-Low Emission Vessels, five of which are being built at Keppel: three small 3,500 m³, two medium-sized 6,000 m³ and a larger vessel at 18,000 m³.

    All six vessels are diesel-electrical powered, with engines allowing optimal use of generated power but with low fuel consumption and emissions. In addition, the vessels are equipped with a two stage highly efficient exhaust gas filter system, resulting in emissions complying with the European Stage V regulations for inland waterway vessels.

    “We are delighted to be leading the way in compliance with the most stringent global emission limits with the world’s first EU Stage V dredgers, which will be highly fuel-efficient, reliable, versatile and productive,” says Robby De Backer, New Building Director at Jan De Nul Group. “Their use will enable dredging projects to be completed with the lowest levels of emissions to date.”

    “As the new dredgers will frequently operate in estuaries, rivers and coastal areas near urban areas, we decided to limit the NOx emissions to a level 30% below the actual IMO Tier III requirements, and to reduce other potentially harmful contaminants that are currently not regulated by IMO,” says De Backer.

    The singularity of not choosing clean burning fuels
    In a world of climate change and overall environmental consciousness, Jan De Nul Group has chosen to design and build its latest generation of dredging vessels, running on diesel and equipped with exhaust gas after treatment system. Ambient air in urban environments often contains all kinds of particles and other toxic substances. Jan De Nul aims at minimising its contribution to manmade dangerous pollution sources in those urban areas.

    Burning cleaner fuels helps to reduce some individual pollutant levels, whereas Jan De Nul has taken the initiative to actually remove or eliminate active pollutants from exhaust gases.

    By doing this, Jan De Nul takes a different approach than others who have chosen clean burning fuel vessels. “Our main target from the start was: how can we lower the air pollution caused by dredging vessels?” says Michel Deruyck, Fuel Coordinator at Jan De Nul Group. “We focus on the impact that maritime transport and port development has on public health and ambient air quality. During the new dredger design phase, we looked at different options and technologies, with the goal of maximising pollution reduction or elimination, and preparing for the stricter European land and inland waterways emission regulations Stage V, due for implementation in 2020.”

    Stage V regulation and catalytic filtering technique
    The maritime transport regulator International Maritime Organisation (IMO), states that clean burning fuel vessels have to comply with the IMO Tier III regulation. The European regulations on land, Stage V, are far stricter. Mainly because for the first time, particles emitted down to 23 nanometres are taken into account.

    The new vessels will operate with normally available ultra-low sulphur gasoil, with the exhaust gas treated in two stages by means of a Selective Catalytic Reduction (SCR) system, and a Diesel Particulate Filter (DPF). The SCR system lowers NOx to achieve EU Stage V levels for inland waterways. The second stage DPF removes particulates from the exhaust, also down to the future EU Stage V levels. Eliminating black carbon emission with the DPF significantly reduces the climate impact of these vessels.

    Jan De Nul Group chose technology based on the Swiss example of filtering exhaust gases in the tunnelling industry.  “Since the 1990s, the tunnelling industry has used exhaust gas filtration on vehicle and heavy duty machinery emissions to provide clean, breathable air for workers tunnelling under the Alps,” adds Michel Deruyck. “Today we are applying the same filtering techniques on our new vessels, and by accounting for particle numbers we obtain a 99% filtration efficiency and detoxification by catalysis.”

    The Diogo Cão’s design
    The design of the Diogo Cão is based on the successfully operating 3,400 m3 TSHD Alvar Nuñez Cabeça de Vaca and Sebastiano Caboto, built in 2011. The vessels combine a shallow draught with high manoeuvrability, making them very suitable for working in confined areas.

    The Diogo Cão is in diesel-electric execution: all major drives (thrusters, dredge pump, jet pumps...) are electrically driven, and controlled by means of frequency converters. In this way each system can operate at its optimal speed and power. Power is generated by means of three diesel generator sets. A control system automatically starts and stops the sets depending on the power requirement. Asymmetric load sharing results in optimal load distribution over the diesel generator sets. All these measures result in a low fuel oil consumption, which is the best in its class.

    Hopper capacity: 3,500 m³
    Deadweight: 5,500 t
    Length o.a.: 89.3 m  
    Breadth: 22.0 m
    Max. dredging depth: 27.6 m
    Suction pipe diameter: 800 mm
    Speed: 11.3 kn
    Pump power (trailing): 1,250 kW
    Pump power (discharging): 3,000 kW
    Propulsion power: 2 x 1,100 kW
    Total installed diesel power: 5,510 kW
    Accommodation: 16 persons
    Keel laying of the first 6,000 m³ Trailing Suction Hopper Dredger
    Now the Diogo Cão is launched, the keel laying of the first 6,000 m³ vessel is planned to take place on 19 July at the Keppel Singmarine in Singapore.

    Jan De Nul Group recently decided to name both 6,000 m³ Trailing Suction Hopper Dredgers after two decommissioned vessels of the Groups fleet: Sanderus and Ortelius.

    Luxembourg, Belgium headquartered Jan De Nul Group is a family-owned company specializing in dredging and land reclamation, rock placing, trenching, rock dumping for oil and gas related offshore pipeline projects, quay walls, marine related projects, civil engineering and large-scale environmental remediation projects. Dredging accounts for 85% of the Group's turnover. With a yearly turnover of EUR 1.9 billion, the company ranks among the international top of dredging contactors and the top of marine engineering contractors.




2020 October 20

17:03 Van Oord becomes the shareholder in Saare Wind Energy
16:38 Wan Hai Lines to launch China – India Service VI (CI6) Service
16:28 Tiksi port expansion is expected as new fields can be discovered in the region
16:03 Jotun offers Superyachts unique lifecycle support with launch of JotunCare
15:44 Rosmorport collects applications for debut bonds in amount of RUB 4 billion
15:30 DCSA publishes standard data definitions to enable just-in-time port calls
15:12 ESPO congratulates Port of Valencia for renewing PERS certification
14:23 Samsung Heavy Industries again chooses Wärtsilä cargo handling system design for new VLEC vessels
13:41 Modernization of port Tiksi to build up throughput to 300,000 tonnes
13:25 Port of Antwerp participates in developing and testing a private 5G network
13:20 Bunker prices are slightly up in the Far East ports of Russia (graph)
13:02 Port Houston container volumes up 1% to 251,524 TEUs in September 2020
12:33 RF Ministry of Economic Development to allocate RUB 2.8 billion for creation of port SEZ in Astrakhan Region
12:19 DNG Energy receives a licence for LNG bunkering in Coega
11:00 KSS Line signs with Hyundai Global Services for smart ship solution powered by Inmarsat and Intellian
10:58 ASW ship Vice-Admiral Kulakov and support vessels of RF Navy’s Northern Fleet enter Greece
10:37 Admiral Makarov frigate of RF Navy’s Black Sea Fleet passes Black Sea straits
10:12 LUKOIL and Rostec sign cooperation agreement
10:02 MABUX: Bunker market this morning, Oct.20
09:49 Shipbuilding Corporation “Ak Bars” to tell about passenger ship Chaika at 4th “LNG Fleet, LNG Bunkering and Alternatives” conference
09:26 Oil prices decrease amid second COVID-19 wave concerns
09:14 Baltic Dry Index as of October 19

2020 October 19

18:11 CMA CGM to launch the East Med - Black Sea Express
18:01 Taganrog coastal station of NAVTEX service obtains certificate of conformity
17:48 BPA to host 5G workshop
17:27 FESCO to supply India's research stations in Antarctica for the third year in a row
17:06 Valenciaport registers the record with 477,194 containers handled in September 2020
16:46 4th “LNG Fleet, LNG Bunkering and Alternatives” conference to be held online on 28 October 2020
16:05 Milaha obtains “ISO 27001” certification for Information Security Management System
15:49 Rosmorport's sailing ship “Mir” to sail around the world in 2022-2023
15:12 Mitsubishi Shipbuilding receives approval in principle for LNG fuel gas supply system from Bureau Veritas
15:04 A.P. Moller - Maersk integrates the European customs services specialist KGH Customs Services
14:35 Harvey Gulf orders Wärtsilä Energy Storage for another four LNG-powered Supply Vessels
14:30 Average spot market price for Russian M100 product rose to RUB 11,894 pmt
14:11 GTT announces the acquisition of Areva H2Gen
13:58 Project on construction of fish terminal “Udarnik” registered as second resident of Arctic Capital PDA
13:17 Ukraine's January-September 2020 coal imports down 15%
13:11 ZIM and Alibaba.com sign strategic cooperation agreement
12:52 Port of Riga sets itself new goal to become region's leader in grain handling
12:33 TransContainer increased container transportation volumes by 15.1% YoY
12:04 Port of Oakland names Acting Communications Director
11:47 Blagoverf shipyard lays down buoy tender of project 3052 for Rechvodput
11:06 EPS collaborates with GoodFuels for marine biofuel bunker trial
10:42 Ocean Yield ASA acquires two suezmax newbuildings with long-term charters
10:40 First sections for ice-resistant platform LSP “A” shipped to outfitting yard
09:58 North Carolina Ports awarded $16 million grant for infrastructure improvements
09:39 MABUX: Bunker market this morning, October 19
09:25 Week beginning is marked by oil prices decrease
09:12 Baltic Dry Index as of October 16

2020 October 18

16:05 Inmarsat and Cobham SATCOM enable Maldives fisheries sustainability with Fleet One
15:58 JAXPORT now offers expanded service to the West Coast of South America through ONE
14:11 Nordic American Tankers says full financing of Suezmax duo is in place
13:14 Bright outlook at Gibdock as bookings remain solid
12:27 Supply contracts signed for main equipment for Squadron 2020 project
11:09 Port of Gdansk inks LoI with Ukrainian Sea Ports Authority

2020 October 17

12:54 CMA CGM announces FAK rates from West Med, Adriatic, Black Sea & East Med to Far East
11:51 CMA CGM extends PSS from Asia to North Europe
10:42 THE Alliance announces updated service adjustments for November 2020
09:34 The largest LNG-powered container ship ever built features Wärtsilä solutions
08:37 CMA CGM and MSC share information through the blockchain-based data platform TradeLens