• 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.




2019 February 16

16:15 Ribbon-cutting kicks off ICTSI´s Batumi terminal expansion project
14:42 Höegh’s RoRo solution chosen for 112MT Transformer shipment
13:28 Torqeedo wins Innovation Award at Miami International Boat Show for powerful new inboard electric propulsion system
12:13 Telford Offshore beefs up its fleet
10:26 Chevron inks new LNG agreement with GS Caltex

2019 February 15

18:05 Noble Corporation announces purchase of a second newbuild jackup rig from PaxOcean
16:57 Port of Goole powered by £1 million solar installation
16:26 ABP continues support of Felixstowe Volunteer Coast Patrol Rescue Service
15:30 Sea Cup 2019 preliminaries kick off in Kamchatka
15:04 CNIIMF authorized to confirm conformity of dangerous cargo containers
13:59 Nevsky Shipyard starts cutting metal for cargo-passenger ship of PV22 project
13:32 Murmansk Sea Fishing Port handled 5,500 tonnes fish in Jan’2019, down 48% Y-o-Y
13:08 Fincantieri and Princess Cruises celebrate three construction milestones of three “Royal” class ships at the Monfalcone shipyard
12:45 Dredging under Sea Port Sukhodol project to exceed 7 mln cbm – details to be covered at the Congress
12:08 Port of Oakland import volume increased 9 percent January 2019
11:46 8 vessels escorted by icebreakers in eastern part of Gulf of Finland during 24 hours on February 14-15
11:27 Okskaya Sudoverf lays down seventh dry cargo carrier of Project RSD32M
11:08 DNV GL and Metalships & Docks ink class agreement for luxury sailing vessel
10:53 Throughput of Ukraine’s seaports in Jan’19 grew by 3.4% Y-o-Y to 11.19 million tonnes
10:29 Brent Crude futures price is up 0.63% to $64.98, Light Sweet Crude – up 0.57% to $54.72
10:08 EFIP welcomes the adoption of the European Parliament resolution on NAIADES II
09:41 Bunker prices are going up at the port of Saint-Petersburg, Russia (graph)
09:16 Baltic Dry Index up down to 628 points
09:07 ICTSI inaugurates the expansion of its Batumi International Container Terminal
08:07 MAN Energy Solutions wins contract to supply the engines for a new harbour tug in Spain
07:41 Inmarsat announces new initiatives to support maritime, ports and logistics start-ups with Rainmaking and Bluetech

2019 February 14

18:03 Austal's LCS 20 completes acceptance trials
17:44 Royal Navy to discuss the future of unmanned and autonomous naval warfare at SMi's 3rd annual Unmanned Maritime Systems Technology 2019
17:22 Freight turnover of Neva-Metal (Saint-Petersburg) in January 2019 fell by 26% Y-o-Y to about 190,000 tonnes
17:03 MOL Techno-Trade takes part in marine environmental protection program
16:25 VTB acquires 100% of Novorossiysk Grain Terminal from NSCP Group
16:03 Port of Virginia container volume up 8.9% to 134,638 TEU in January 2019
16:03 Expert expects uncertainty on global fuel market next week
15:49 “K” Line’s LNGC makes maiden call from Ichthys LNG Project to Naoetsu LNG Terminal in Japan
15:40 BSTDB to finance construction of Lavna coal terminal under agreement with STLC
15:21 2nd Conference “Dangerous cargoes: new transportation requirements” to be held under the auspices of RF Chamber of Commerce and Industry
15:03 ONE renewes own loading record exceeding 19000TEUs
14:33 Maersk and PBF Logistics LP announce agreement for production and storage of 0.5% sulphur fuel on the U.S. East Coast
14:02 Port of Long Beach volumes decrease 0.1 percent to 657,286 TEU in Jan 2019
13:50 Multipurpose Transshipment Complex to be built in Primorsk
13:32 Port of Los Angeles volumes up 5.4 percent to 852,449 TEUs in January 2019
13:02 Port of Rotterdam throughput volume up to 469.0 million tonnes in 2018
12:46 Supply vessel OCEAN COOPER 2 sinks in Singapore waters
12:25 Baltic Sea Region cruise ports commit to reducing negative ecological impacts
11:27 Bunker prices are flat at the Far East ports of Russia (graph)
11:09 Port of Marseille-Fos to deliver the first phase of the subsea cable landing infrastructure by Q3 2019
10:31 9 vessels escorted by icebreakers in eastern part of Gulf of Finland during 24 hours on February 13-14
10:09 GTT receives an order from Samsung Heavy Industries for the tank design of a new LNG Carrier for Minerva Gas
09:44 Brent Crude futures price is up 0.66% to $64.03, Light Sweet Crude – up 0.58% to $54.21
09:25 Baltic Dry Index is up to 608 points
09:08 ABB to power Iceland’s first electric ferry ABB to power Iceland’s first electric ferry

2019 February 13

18:10 Shell and partners start deep-water production at Lula North in Brazil
17:46 OLT Offshore LNG Toscana Regasification Terminal works at almost full capacity
17:23 Excelerate’s Northeast Gateway Deepwater Terminal reached a peak send-out flow rate
16:58 Bunker sales at the port of Singapore in Jan’2019 fell by 8.9% Y-o-Y to 4.12 million tonnes
16:29 II HES and Dredging Forum to address deep-water routes to Sabetta and Novoportovsky terminal
15:57 Port of Singapore throughput in Jan’2019 fell by 2.4% Y-o-Y to 51.93 million tonnes
15:32 Throughput of Russian seaports in Jan'2019 grew by 5.6% Y-o-Y to 67.6 million tonnes of cargo (detalization)
15:05 Bank VTB acquired 50 percent minus one share in United Grain Company
15:04 NYK conducts crisis-response drill with ONE