• 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 May 30

10:09 Fincantieri signs cooperation agreement for the development of natural gas power systems
09:52 RF Government approves decision on investment quotas
09:35 Сombat capabilities of RF Navy’s submarines and surface ships to be increased through modernisation
09:21 MOL confirms 2% in average CO2 reduction with windshield installed on bow of containership

2017 May 29

18:39 Port Corpus Christi receives the largest vessel to call on a Gulf of Mexico port
18:06 Deltamarin container vessel design to be built in China
17:49 The course of the Port Railway Line will be altered in the port of Rotterdam
17:26 Ulstein awarded contract by China Merchant Group 1 + 9
17:06 Konecranes receives order from HHLA for 25 AGVs with lithium-ion battery drives
16:47 Marseille Fos to cut port dues for eco-friendly ships
16:42 Krylov State Research Center hosted the conference devoted to innovations and effectiveness in naval shipbuilding
16:18 Passenger Port of Saint Petersburg welcomed 9 cruise ships last week
15:55 Cruise ship Thomson Celebration made its inaugural call to Passenger Port of Saint Petersburg
15:29 Transneft Volga Region to export 40 million tons of oil a year through Novorossiysk port
14:46 Average wholesale prices for М-100 HFO up to RUB 10,021 in RF spot market
14:23 FESCO starts regular rail transportation of export cargo to the ports of St. Petersburg
13:58 French Maritime Academy representatives visit WMU
13:30 ABS Nautical Systems simplifies MRV compliance
13:01 Wärtsilä introduces dedicated organisation to drive digital transformation
12:59 DNV GL to launch the LNG Fuel Finder
12:27 Russian oceanographic research vessel Admiral Vladimirsky is escorting the sailing ship Nadezhda in the Gulf of Aden
12:02 Members of the European Parliament assess Lithuania’s Rail Baltica progress
11:36 Gondán announces delivery of first European-built dual-fuel tug
10:54 Rosmorport appoints Elena Bulanova as Acting Director of its Vanino Branch (photo)
10:28 Satcom Global completes rapid rollout of Aura VSAT across Parakou fleet
10:01 Brent Crude futures price down 0.25% to $52.38, Light Sweet Crude – down 0.28% to $49.66
09:40 Cruise liner Knyaz’ Vladimir set sail for test voyage (photo)
09:15 Baltic Dry Index down to 912 points

2017 May 28

08:59 Carnival Corporation to offer Alipay payment services onboard its fleet in Asia
05:57 Majestic Princess begins journey to China along the Silk Road sea route

2017 May 27

15:56 US Commission meets to discuss regulatory reform initiative & ocean carrier alliances
15:54 Seaspan accepts delivery of 14000 TEU SAVER Containership
07:48 DNV GL releases the new issue of MARITIME IMPACT magazine
07:45 Yilport starts investments in Ecuador’s Puerto Bolívar container terminal by installing two mobile harbor cranes

2017 May 26

18:07 OOCL enhances Intra-Asia service network by launching the ITS and VJS products
17:48 Biofouling was on the agenda at the latest in a series of IMO workshops
17:40 Wärtsilä’s hybrid system increases offshore supply vessel’s engine efficiency
17:24 IMO treaty supporting free flow of international maritime traffic is the subject of a regional seminar in Bangkok
16:52 JSC “Latvijas kuģniecība” posts net profit of USD 0.16 mln in Q1 2017
16:00 Shanghai Maritime Court representatives visit WMU
15:33 Europort Masterclasses shape industry thinking
15:09 Press-conference devoted to new cruise opportunities held onboard Princess Anastasia in St. Petersburg
14:45 Passenger Port of St. Petersburg hosted business meeting with Royal Caribbean Cruises and Arctur Travel
14:11 Passenger Port of St. Petersburg BoD held regular meeting on 24 May 2017
13:36 Hydrographic boat of Project К 1100 Meridian launched at the port of Kaliningrad (photo)
12:58 MOL launches R & D on autonomous ocean transport system
12:27 Pacific Regional Search and Rescue workshop held in Auckland, New Zealand on 22-26 May
12:10 London will host 8th Maritime Salvage & Casualty Response on 13-14 September 2017
11:39 IMO Secretary-General Kitack Lim spoke at the European Maritime Safety Agency (EMSA) in Lisbon
11:04 Diana Shipping announces time charter contracts for m/v Astarte with Glencore and m/v Erato with Phaethon
10:43 Training with all-arms forces of RF Navy's Northern Fleet started in the Barents Sea
10:25 Brent Crude futures price down 0.60% to $51.13, Light Sweet Crude – down 0.78% to $48.52
10:06 Jacksonville harbor deepening awarded $17.5M in federal funding for construction
09:48 Indicative bunker prices continue going up at the port of Saint-Petersburg, Russia (graph)
09:31 Navios Maritime Partners acquires five 4,250 TEU container vessels from Rickmers Maritime
09:14 Baltic Dry Index down to 918 points
08:06 BPA attracts SM Line to bolster cargo volume at Busan Port
06:26 NYK bulk carrier rescues fishermen off the coast of Peru

2017 May 25

18:30 Rostov Port Group partners with Donskoy Krepezh to acquire 80% of interest in construction company PROSPEKT
17:06 Panama Canal sets new record for largest-capacity vessel