• 2017 March 17 17:57

    Jan De Nul Group orders new vessels with exhaust gas treatment systems


    Jan De Nul Group ordered three 3,500 m3 Trailing Suction Hopper Dredgers to be built at Keppel Nantong.

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

    The vessels are 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, and by means of asymmetric load sharing we ensure that the load is optimally distributed over the diesel generator sets. All these measures result in a low fuel oil consumption, which is the best in its class.

    Thanks to the low fuel oil consumption emissions are lowered, but in addition the vessels are equipped with exhaust gas treatment systems in order to further reduce harmful emissions.

    New vessels need to comply with IMO regulations for NOx emissions. As the new dredgers will frequently operate in estuaries and on rivers, or near the coast, and therefore near residential areas, Jan De Nul Group decided to limit the NOx emissions to a level far below the actual requirements, and to reduce other contaminants that are currently not regulated by IMO.

    The new vessels will operate with normally available fuel oil, and the exhaust gases are cleaned by means of a Selective Catalytic Reduction (SCR) system, and a Diesel Particulate Filter (DPF). The SCR system lowers the amount of NOx in the exhaust to a level corresponding with the future European (EU Stage V) requirements for inland waterway vessels; this standard is much more stringent than the applicable IMO Tier II and Tier III requirement.

    The DPF removes particulate matter from the exhaust, down to a level in accordance with the future EU Stage V requirement for inland waterway vessels.

    Combined with the use of readily available low sulphur fuels, the emissions (NOx, SOx, Particulate Matter, CO and Hydrocarbons) will comply with EU Stage V, and be better than any other vessel or dredger. They will be equivalent or better than these of a dredger using LNG as fuel. But, by using normally available fuels, compared to the limited availability of LNG, these lower emissions are achieved worldwide, and all of the time.

    LNG (Liquified Natural Gas, consisting mostly of methane) is being promoted as an environmental-friendly fuel. It has a number of advantages: for the same power less greenhouse gas CO2 is emitted, and emissions of some contaminants such as NOx, SOx, Particulate Matter are lower compared to a diesel engine on fuel oil, without exhaust gas treatment system. However, the same or even better results are achieved by using exhaust gas treatment, and the important environmental and operational downsides of LNG are avoided:

    Methane leakages (during production, transport, bunkering, …) and methane slip in the dual fuel engines (gas that is not burned and directly released in the atmosphere) are significant. Methane is a very potent greenhouse gas: over a 100 year period, the effect of methane on global warming is 34 times higher than the same amount of CO2. As a result, most studies conclude that with current technology, LNG as a fuel is not better, and in most cases worse than fuel oil with respect to global warming.

    The availability of LNG is poor. In addition, due to space and cost restrictions, LNG dredgers have very limited capacity for LNG, and therefore an autonomy of only about 1 week. In practice, a LNG dredger is only occasionally, and/or in a limited geographical area, capable of operating with LNG. Normal fuel oil will have be used for most of the time or in most of the world, and therefore without any improvement with respect to emissions.

    Technical specifications:

    Hopper capacity

    3,500 m³

    Deadweight

    5,500 tonnes

    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)

    3000 kW

    Propulsion power

    2x1100 kW

    Total installed diesel power

    5,510 kW

    Accommodation

    16 persons

    Innovation, expertise and sustainability. These are the corner stones of Jan De Nul Group’s success. Thanks to its skilled employees and the world’s most modern fleet, Jan De Nul Group is a leading expert in dredging and marine construction activities, as well as in specialized services for the offshore industry of oil, gas and renewable energy. These core marine activities are further enhanced by Jan De Nul Group’s in-house civil and environmental capabilities offering clients a complete package solution.




2017 March 23

18:16 NDQ sets up in Maritime Logistic Zone in Zeebrugge
18:06 COSCO (Dalian) Shipyard delivers a module carrier
17:55 Zelenodolsk Plant and Krylov Centre striving to expand cooperation
17:36 Rhenus takes a 40 percent shareholding in the ARKON Shipping Group
17:16 Nakilat transitions LNG Mesaimeer to in-house management
17:12 MABUX: The state of uncertainty on global fuel market
17:06 Port Bronka is officially announced as a deepwater port
16:52 Anglo-Eastern, Optimarin and Saga join forces for ground-breaking Manila-based BWT training facility
16:40 MacGregor and Rolls-Royce to explore implications of autonomy for container ships
16:10 Throughput of Chinese ports up 7.1% to 1.36 bln t in Jan-Feb'17
16:03 DHT Holdings announces acquisition of 11 VLCCs from BW Group
15:48 Port of Singapore throughput up 7% to 99.15 mln t in Jan-Feb'17
15:25 SENAN takes delivery of four Interceptor 1102 vessels from Damen
14:52 Corvettes of RF Navy's Baltic Fleet carried out artillery strike on ship detachment of conditional enemy
14:29 Rail Baltica progress discussed with the European Coordinator Ms. Trautmann
14:01 VSTEP and Damen sign cooperation agreement for Royal Bahamas Defence Force project
13:46 Murmansk Region Governor Marina Kovtun took part in “Fishery in the Arctic" conference
13:13 Project Deepening and Widening of Mumbai Harbour Channel and JN Port Channel (Phase-II) gets governmental approval
12:55 Heading towards the 2020 sulphur limit highlighted during maritime industry events in Denmark
12:34 Unique crane equipment delivered to Zvezda shipbuilding complex
12:12 Ulstein Verft is about to complete ship service on the sixth ship this year
11:51 Bunker prices are slightly up at the Far East ports of Russia (graph)
11:30 Two NYK vessels receive Panama Canal's Green Connection Award
11:17 First fish terminal created at the port of Petropavlovsk-Kamchatsky (photo)
11:01 APL extends cargo assurance for protection against cargo-in-transit risks
10:31 Ocean Yield ASA announces delivery of container vessel with 15 years charter
10:13 Brent Crude futures price up 0.75% to $51.02, Light Sweet Crude – up 0.79% to $48.42
10:10 THE Alliance starts new Mediterranean services
09:59 German Federal Office for Agriculture and Food awards Damen Fisheries Research Vessel contract
09:52 Baltic Dry Index up to 1,190 points
09:36 CITLE offers market entry to western China
09:19 Finnpilot Pilotage Ltd.’s result for 2016

2017 March 22

18:50 FAS Russia oblidges NCSP transfer revenue from its monopolistic activities into the federal budget
17:45 Ukraine’s water transport carried 1,000 passengers in Jan-Feb'17, down 32%, Y-o-Y
17:24 Caspian Flotilla ships are getting ready to participate in the Sea Cup 2017 international contest
17:06 Svitzer purchases newbuild 80 tbp ASD escort tug
16:51 ORBCOMM, Pole Star and Weatherdock launch Class B vessel tracking solution
16:30 USC of Russia and ZPMC (China) sign memorandum of cooperation (photo)
15:46 RF Transport Ministry sees prospects of creating dry bulk area of port Taman in 2020-2025
15:21 CMA CGM announces FAK rates from April 1st, 2017
15:00 Rosmorrechflot appoints Harbour Masters of Dikson and Dudinka ports
14:25 Handling and mooring tariff changed in the Kaliningrad Seaport
14:02 Navantia chooses MAN main and GenSet engines to power two fleet-support-tanker newbuildings
13:33 Port Bronka sees promising possibilities in containerization of dry bulk cargo
13:02 ABS Executive delivers wake-up call on cyber risks
12:34 Ship systems and equipment meeting underway
12:05 Cargo transportation by Ukraine’s water transport in Jan-Feb'17 fell by 30.2% to 0.3 mln t
12:01 Crowley and Penn Terminals sign multi-year stevedoring and terminal services agreement for Puerto Rico – North Atlantic Service
11:46 Bunker market at Russian port of Novorossiysk sees mixed price movements
11:09 Damen InvaSave external ballast water treatment system receives IMO type approval
10:51 Latvian Shipping Company publishes audited annual report 2016
10:30 Crowley launches LNG-powered ConRo ship at VT Halter Marine
10:14 Brent Crude futures price down 0.31% to $50.80, Light Sweet Crude – down 0.33% to $48.08
10:00 GTT to equip new Hyundai Heavy Industries’ LNG carrier
09:38 Bunker prices are going down at the port of Saint-Petersburg, Russia (graph)
09:33 MOL announces name changes of wholly owned subsidiary in Europe
09:17 Baltic Dry Index down to 1,200 points

2017 March 21

17:49 Nissan chooses the Port of Gdansk - another automotive contract at the port
17:26 USPA to simplify contract documentation in accordance with FIDIC standards
16:50 USPA specified criteria and documents necessary to obtain status of port operator