• 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 April 25

13:02 APL enhances China-Indonesia trade lane with new China Southeast Asia Service 6
12:37 Ventis and OSM form JV for “K” Line LNG vessel crewing
12:06 Vostochny Port participated in 15th specialized international conference “Coaltrans China”
11:42 Bunker prices are still high at the Far East ports of Russia (graph)
11:18 Ukraine’s water transport carried 2,000 passengers in Jan-March'17, down 43.6%, Y-o-Y
10:59 First shiploader delivered to Vostochny Port’s Phase 3 (photo)
10:24 Brent Crude futures price up 0.44% to $55.37, Light Sweet Crude – up 0.43% to $49.44
10:05 Zelenodolsk Plant Named After M. Gorky lays down tenth small-size missile ship of Project 21631 for RF Navy (photo)
09:33 Port of Gdansk throughput up 0.7% to 8.86 mln t in Jan-March'17
09:16 Baltic Dry Index down to 1,170 points

2017 April 24

18:07 DOF Subsea purchased shares in Canadian Subsea Shipping Company AS
17:49 Cargo transportation by Ukraine’s water transport down 9.3% to 0.9 mln t in QI’2017
17:30 Shearwater GeoServices receives TGS Irish Atlantic Margin award
17:02 DOF awarded extension with Statoil for the vessel Skandi Vega
16:36 DHT Holdings announces delivery of two VLCCs from BW Group
16:23 Rosmorport prepares seaport of Petropavlovsk-Kamchatskiy for cruise navigation season of 2017
15:59 Icebreaker assistance services will not be provided at port Primorsk (Leningrad Region) from April 25
15:31 Average wholesale prices for М-100 HFO up to RUB 9,649 in RF spot market
15:03 ICTSI services inaugural call of Evergreen’s Kor-Twn-Phl route in Subic
14:50 IMO in China to share policies and regulations update
14:27 Big Port St. Petersburg stops providing icebreaker assistance services from April 25
14:03 HELCOM Pressure Group meeting focuses on reducing the input of nutrients into the Baltic Sea
13:41 Belgium accedes to oil pollution response treaty
13:20 Yaroslavsky Shipbuilding Plant launches fourth boom-laying boat of Project А-40–2Б-ЯР (photo)
13:02 Ocean Alliance prepares to call at Wilhelmshaven
12:42 Rail Baltica Global CBA confirms the project's financial and economical viability
12:19 Kimmo Rahkamo appointed CEO of Skangas
12:01 Nakilat concludes first quarter with net profit of QR 191 million
11:26 Pacific Fleet ship detachment finished its visit to the Philippines
11:23 Hyundai Samho Heavy Industries attracts 300 billion won investment via pre-IPO
11:04 TransContainer’s net income increased more than 2.3 times to RUB 1,237 million
10:40 Yantar Shipyard laid down rescue support ship of Project 23700, Voyevoda, for RF Ministry of Industry and Trade (photo)
10:02 Brent Crude futures price up 0.72% to $52.82, Light Sweet Crude – up 0.64% to $49.95
09:39 ABP South Wales offers bespoke solutions to Hinkley Point C suppliers
09:15 Baltic Dry Index down to 1,195 points

2017 April 23

08:23 Freeport of Riga CEO position to be announced this week
08:20 MPI Offshore and Vroon Offshore Services collaborate to provide offshore services for the Rampion Offshore Wind Farm
08:17 Christening of EasyMax vessel Egbert Wagenborg takes place
08:16 HRADF announces three improved binding financial offers for Thessaloniki Port Authority SA
08:11 Ocean Rig announces extension of Drill Rigs Holdings early consent deadline

2017 April 22

08:25 Norway is first to ratify 2010 compensation regime for Hazardous and Noxious Cargoes
08:03 Polarcus Amani delivered to Sovcomflot
08:01 Concordia Maritime charters two ECO MR tankers
07:59 DEME acquires new dredging contracts in Germany, France, UK and Spain
07:54 Two Damen companies to combine their specific skill sets
07:49 Ireland’s port traffic remains strong in 2016 despite challenging trading environment

2017 April 21

18:01 President of the Philippines visited RF Navy’s Varyag missile cruiser in the port of Manila
17:40 Shipbuilding cluster to be created in the Astrakhan Region
17:15 Bill on transit cargo transportation supported by RF Government with some comments and proposals
16:52 Commander of Varyag cruiser of RF Navy's Pacific Fleet had a meeting with Philippine Navy Commander
16:31 Gates on the Upper Volga can be opened ahead of schedule as requested by ship owners – Rosmorrechflot
16:06 Active search of crewmembers of dry cargo ship Geroi Arsenala is over in the Black Sea
15:48 Superficial structure of the Ice-Resistant Platform-2 escorted along the Volga-Caspian Marine Shipping Canal
15:24 CMA CGM announces GRI from Asia to Panama, the Caribbean and Cuba on PEX2 service
15:09 World's bunker market still in waiting mood, expert says
14:55 Indicative bunker prices are flat at the port of Saint-Petersburg, Russia (graph)
14:23 CMA CGM announces FAK rates from Asia to North Africa trades
14:02 Navios Maritime Partners agrees to acquire 14-vessel container fleet from Rickmers Maritime
13:41 Moscow will host Midstream & Downstream Russia & CIS on 22-23 June, 2017
13:23 Siem Offshore announces charter contracts