• 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 August 16

15:31 Melbourne port operator ICTSI may be investigated by State and Federal authorities
15:09 Bunker prices at Far Eastern ports remain flat
14:33 CMA CGM announces GRR from Asia to Indian Ocean
14:27 MABUX: Bunker prices may change irregular next week
14:13 Maersk Line announces rates from Far East to North Europe
13:42 First ever S-T-S loading of 70000dwt Panamax coal carrier performed at Shakhtersk harbour transshipment location in Sakhalin
13:32 More investment contracts at the Port of Gdansk
13:02 Wärtsilä equipped Canadian ferry will have minimal environmental impact
12:16 Damen Shipyards Galati celebrates 125 years
12:09 Okskaya Sudoverf Shipyard launches 6th serial barge of Project ROB20
12:03 Boskalis presents half-year results and terminates loss-making low-end transport activities
11:59 Port of Oakland container volume up 3.6 percent in July 2018
11:45 Rolls-Royce launches new battery system for ships
10:58 DP World revenue up 14.4% in H1 2018
10:57 VARD secures contract for one autonomous and electric-driven container vessel for YARA
09:39 EU NAVFOR mission operation commander visits Spanish MPRA in Djibouti
09:21 Baltic Dry Index gains to 1725 points

2018 August 15

18:33 Equinor extends partnership with The Arctic Race of Norway
17:56 Port Kavkaz seven-month volumes soar 30% Y/Y to 25.21 million tonnes
17:36 Russian Gov't to allocate RUB 500 million in subsidies to support small-tonnage fishing ships construction, Rosrybolovstvo says
17:34 Maersk Line to rise rates from Far East to East Coast South America
17:30 Yang Ming orders ten 2,800 TEU containerships
17:19 Nor-Shipping 2019 takes place in Oslo and Lillestrøm, Norway, from 04 to 07 June 2019
16:05 New Times Shipbuilding announces delivery of oil tanker
15:04 Rosrybolovstvo looks into building a series of three RVs as from 2020
15:04 Concordia Maritime AB announces interim report for H1 2018
14:12 Multipurpose Reloading Complex spends over RUB 600,000 on employee benefits and rewards programme
13:20 Konecranes to deliver more electric RTGs to Luka Koper in Slovenia
13:02 Join Marinet Conference at SMM 2018, Hamburg
12:32 Prime Minister Dmitry Medvedev gives green light to NLR construction project
12:01 WW Ocean presents new-look trade maps resembling public transit maps
11:15 Port of Vancouver posts H1 2018 results
10:41 Aker Solutions wins orders for Liuhua power umbilical systems in China
10:21 Nor-Shipping 2019 devotes entire hall to new focus on Blue Economy
10:05 Crude oil futures drop 0.22% to $72.3 in London and 0.48% to $66.72 in New York
09:29 Bunker prices at Port of St. Petersburg show mixed movements

2018 August 14

18:30 Hapag-Lloyd annonces General Rate Increase from East Asia to USA and Canada
18:12 FE Railways' loaded freight in Jan-Jul up 2% to 28.2 million tonnes
18:07 Hapag-Lloyd changes terminals at Genoa on its MPS service
17:47 British Ports Association launch Sustainable Development Resolution
17:45 Euro Tank Terminal extends jetty at the port of Rotterdam
17:31 MEYER WERFT holds float out procedure for cruise ship for AIDA Cruises
17:29 APM Terminals launches online customer platform in Bahrain
17:27 MED MARINE delivers a 24m ASD Tug from Turkey to Estonia
16:24 Offshore installation vessel starts work on Belgium’s largest offshore wind farm
15:44 Logistec Corporation declares quarterly drvidends on shares
15:21 Vessel Performance Optimisation Forum Singapore initial speakers announced
15:02 Danaos Corporation announces closing of comprehensive debt refinancing
14:16 Sea Port St. Petersburg earmarked over $337,000 for bonus and social responsibility programmes
14:13 TTS Group ASA secures new contracts for access equipment and cranes for two reefer vessels
14:06 Ports of Primorsk and Ust-Luga support green shipping, to implement incentives for LNG-powered ships as from August 15, 2018
13:39 Bunker prices in Far East seaports edge down
13:14 ExxonMobil is first to supply via an independently accredited MFMS in ARA
13:10 Port of Brisbane announce a successful bid for funding of Heavy Vehicle Safety Around Ports project
12:13 HHLA posts operating result for H1 2018
11:29 Rosterminalugol’s seven-month coal throughput hits the 13-million tonne mark
11:11 Crude oil futures price rises to $73.28 (London) and $67.81 (New York)
11:01 Diana Shipping announces continuation of time charter contract for m/v Protefs and a new time charter contract for m/v Nirefs with Hudson
10:58 GeoSea has taken delivery of self-propelled DP2 jack-up vessel ‘Apollo’
10:09 Safe Bulkers announces acquisition of a Capesize class dry-bulk vessel