• 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.




2018 October 16

18:03 ABS holds two seminars at the 58th Genoa International Boat Show
17:55 Throughput of port Kaliningrad in 9M’18 grew by 5% Y-o-Y to 10.65 million tonnes
17:36 Wärtsilä opens the first International Maritime Cyber Centre of Excellence in the world
17:03 CMA CGM announces Overweight Surcharge on Asia and India to Africa trades
16:56 Wärtsilä launches Acceleration Centre in Singapore and partners with MPA and PSA Marine to develop IntelliTug
16:40 Throughput of port Vyborg in 9M’18 up 22% Y-o-Y to 1.33 million tonnes
16:21 Throughput of port Primorsk in 9M’18 fell by 11% Y-o-Y to 39.80 million tonnes
16:03 Höegh LNG announces amendment of the Höegh Gallant time charter
15:44 LUKOIL starts construction of facilities at Rakushechnoye field
15:22 Throughput of port Vysotsk in 9M’18 climbed by 6% Y-o-Y to 13.69 million tonnes
15:03 Avatar Logistics initiates cooperation with Sand & Grus AB Jehander and buys the vessel MS Jehander
14:41 Throughput of port Ust-Luga in 9M’18 declined by 5% Y-o-Y to 72.38 million tonnes
14:20 CMA CGM announces GRR from Far East to West Africa
14:03 Lithuanian Railways, Metrans and the Port of Hamburg strengthen relations
13:52 Throughput of Port St. Petersburg up 12% to 44.22 million tonnes in 9M’18
13:06 Scorpio Bulkers announces update on scrubbers
12:39 Project 22800 small missile ship Burya to be floated out on 23 October
12:13 Rolls-Royce and Intel announce autonomous ship collaboration
11:55 The Port of Riga outlines a vision for future development of Spilve Meadows
11:31 Ørsted selects GeoSea for Borssele 1 & 2 foundation and turbine transport and installation
11:14 Jan De Nul will dredge access channel to Guayaquil Port
11:11 RF Navy’s Baltic Fleet detachment completed tasks in Mediterranean Sea
10:59 Damen Maaskant Shipyards Stellendam celebrates 70 years and bids farewell to director Frits van Dongen
10:50 Detachment of RF Navy's Pacific Fleet completes visit to Republic of Korea
10:28 WMU holds needs assessment workshop in Jordan
10:02 Brent Crude futures price up 0.31% to $81.03, Light Sweet Crude – up 0.11% to $71.86
09:43 IMO ​pushing forward with tackling greenhouse gas emissions
09:17 Baltic Dry Index is up to 1,584 points

2018 October 15

18:23 MOL joins hands with partners to launch FOCUS project
17:59 Moscow to host a conference on construction of LNG-powered and LNG bunker ships on October 24
17:46 Algoma announces cancellation of Croatian newbuilds contracts
17:05 Klaveness Combination Carriers AS registered on NOTC
16:56 Tall ships arrive at Port of Ipswich as part of 'Race of the Classics'
16:37 Coast Guard ends search after plane crash victims bodies are located
16:20 Krasnoye Sormovo shipyard delivers 8,140 DWT Pola Fiva, fifth dry cargo carrier of Project RSD59
16:04 DNV GL leads consortium to update Carbon Trust Floating LiDAR Roadmap
15:34 East Mediterranean projects take steps towards adoption of alternative fuels
15:04 NYK approves Japan Climate Action Summit declaration
14:51 Wärtsilä LNG solutions featured on environmentally advanced cruise ship
14:35 Coast Guard sets port condition X-ray in Georgia, South Carolina
14:17 Andrey Shunin appointed as General Director of Caspian Energy Management
13:28 Cooperation for sustainable shipping in the Mediterranean
12:41 ACL christens its newest G4 vessel, the Atlantic Sun
12:13 Kongsberg Digital and KPMG launch new complete cybersecurity partnership for the maritime industry
11:55 Nevsky Shipyard took part in Offshore Marintec Russia
11:19 ABS leads industry discussion on digitization, safety and compliance
11:12 New shipping route links Gdansk and Scandinavia
10:51 Port of Gdansk considered as transport hub for Slovakia
10:29 Brent Crude futures price up 1.21% to $81.4, Light Sweet Crude – up 1.04% to $72.08
10:10 Tuco Marine Group to build a multipurpose first responder boat for Hovedstadens Beredskab I/S
09:53 Baltic Dry Index is up to 1,579 points
09:34 Gazprom and Shell discuss next steps in Baltic LNG project
09:15 Throughput of port Helsinki (Finland) in 9M'18 up 8.4% Y-o-Y to 11.38 million tonnes (table)
08:07 PIL terminates all calls to Iran due to US sanctions
07:06 ChainPORT hackathon held for the first time simultaneously in the ports of Antwerp and Los Angeles
06:16 Vinalines posts profit of US$900,000 in the first nine months of 2018

2018 October 14

09:19 CMA CGM announces FAK rates from Asia to North Africa
09:17 CMA CGM announces FAK rates from Asia to the Mediterranean
09:16 Port of Corpus Christi moves record tonnage in first nine months of 2018
09:12 Port of New Orleans receives Excellence Award for Master Plan