• 2018 July 12 15:24

    Damen begins work on Marine Aggregate Dredger dredging system

    Damen has begun work on the construction of the innovative dredging system for the first Marine Aggregate Dredger (MAD), the shipbuilding group said in a press release.

    This vessel, which is being built at Damen Shipyards Galati in Romania, is designed to extract sand and gravel from the sea bed at depths of up to -55 metres, including in the challenging conditions of the North Sea. Damen is building the first MAD for Cemex UK Marine Ltd.

    The life expectancy of such a vessel is up to 30 years, so it was important to CEMEX that Damen develop them a vessel that was future-proof. The result is a vessel with an advanced focus on safety, performance and sustainability that will ensure its relevance in the years to come. The innovation of the MAD extends to the dredging system that Damen Dredging Equipment has recently started work on in Nijkerk, the Netherlands.

    CEMEX asked Damen to develop a system with no inboard dredge pipework, something which has never been done on a vessel of this size before. The thinking behind this was to avoid the possibility of the abrasive dredged material creating wear holes in the inboard dredge pipework on board making it a safer and easier maintenance-friendly system.

    “This initial design from Damen Dredging Equipment, considerably reduces the risk of flooding. It has implications way beyond the obvious improvements in safety, not only for the crew on board but also for the maintenance staff, as there will be a reduced requirement for expensive wear parts as well as fast, practical replacement,” says Mark Williams, CEMEX UK Fleet Engineering Manager.

    Reduced maintenance is a common theme to be found throughout the dredging system design, explains Frank de Hoogh, DDE Design and Proposal Engineer.

    “The modular nature of the dredging system takes care of this. Where maintenance was previously a significant undertaking, it can now be conducted with just the on-board service crane, significantly lowering maintenance requirements and increasing uptime.”

    An example of this modularity at work is the screening installation. This is fixed, as opposed to the typical rotating screen towers more commonly used. In addition to being more maintenance friendly, the screening area features an increased capacity courtesy of a larger surface area.

    Another element is the dry unloader machine that Damen has developed along with CEMEX and manufacturer PLM. As a concept, Damen has selected the proven principle of a grab unloader, however a lot of work has gone into optimising the design. For example all electronics on the machine are rated IP68 for long term reliability. Another example is the design of the grab which is optimized to maximize efficiency of each discharge cycle.

    “Such a system already exists in principle, but this model represents the next step – the next generation – in dry unloading technology.”

    Ultimately, Frank says, the MAD benefits from Damen’s role of vessel integrator. “We are responsible not only for the design and build of the vessel, but also for the design and delivery of all on board equipment and its integration with the vessel. This ensures the predictable, reliable performance of the end product.”




2019 February 21

18:33 AML’s MVP200 selected for new Swedish “RV Svea”
18:16 ​Shearwater GeoServices and TGS partner for major Brazil survey
18:03 NYK selected as a White 500 company for third consecutive year
17:55 Rosmorport to dredge 12.1 million cbm of material in 2019
17:34 Boskalis expands market position in marine survey through acquisition Horizon
17:29 GE to supply LM2500 gas turbine auxiliary equipment for Indian Navy’s P17A frigates
17:11 Hydrographic Company to get 15 new vessels by 2024
17:05 Rotterdam port innovation programme PortXL participants announced
17:03 H.H. Sheikh Theyab updated on ADNOC L&S strategy to become a global shipping champion
16:14 SCHOTTEL presents new shallow-water thruster SPJ 30 up to 150 kW
15:35 Forth Ports Group receives planning consent for new terminal at the Port of Tilbury
15:16 Algoma announces the Algoma Conveyor is headed for Canada
14:32 A.P. Moller - Maersk accelerates transformation and grows revenue in 2018
14:11 Teekay Tankers reports fourth quarter and annual 2018 results
13:46 Santos posts it 2018 net profit of $630 million
13:15 Gazprom Neft demonstrates solid growth across all key financial indicators in 2018
13:13 A.P. Moller - Maersk initiates demerger and separate listing of Maersk Drilling
12:49 ESPS Relampago’s crew carried out maritime training exercises with the Seychelles Coastguard
11:57 First meeting of Eastern Partnership LNG Network takes place in Warsaw
11:28 42 vessels escorted by icebreakers in eastern part of Gulf of Finland during 24 hours on February 20-21
11:03 The UK publishes draft UK MRV legislation following Brexit
10:39 Taganrog Sea Commercial Port spent USD 60,500 under its social programme in 2018
10:16 IMO treaties ratified by Guyana
09:54 Allocations of Taganrog Sea Commercial Port for its environmental programme in 2018 totaled USD 96,400
09:31 Brent Crude futures price is up 0.18% to $67.2, Light Sweet Crude – up 0.51% to $57.45
09:15 Baltic Dry Index is down to 622 points

2019 February 20

18:13 Klaipėdos nafta carried out the 10th operation of reloading LNG from a gas carrier to ground storage tanks
17:52 VNIIR-Progress St. Petersburg supplies electrical equipment for Atomflot icebreaker
17:28 Documents on concession model for Taman dry cargo area project to be submitted to RF Govt in March 2019
17:04 Cammell Laird stages ‘float-off’ for new £10m ferry for Red Funnel
16:46 VTMS, AIS and Pilotage Service on the Northern Sea Route to remain under Rosmorport’s control
16:25 NOVATEK eyes arranging LNG bunkering in Sabetta
16:04 Maersk enhances Asia-Europe network to further improve schedule reliability
15:43 Decision made on transfer of FSUE Hydrographic Company to Rosatom Corporation
15:21 Euronav sells LR1 Genmar Сompatriot
14:54 SIA Extron Baltic receives award for rapid growth in the Port of Riga
14:30 NOVATEK announces consolidated IFRS results for year ended 31 December 2018
14:02 COSCO SHIPPING Lines and Bolloré Transport & Logistics sign a MoU to develop new synergies
13:39 ABP partners with Grimsby-based Maritime Academy
13:15 Toll unveils new Australian ship
12:48 Increasing numbers of cruise ships making their maiden calls to Southampton
12:22 Transport Week 2019 welcomes Kalmar among its sponsors
12:01 First diesel-electric Damen Shoalbuster 3514 DP2, IMO Tier 3 ordered by Herman Sr
11:50 20 vessels escorted by icebreakers in eastern part of Gulf of Finland during 24 hours on February 19-20
11:33 DP World acquires leading European transportation and logistics provider P&O Ferries
11:09 Port of Oakland to get three new cranes
10:47 Brent Crude futures price is down 0.3% to $66.25, Light Sweet Crude – down 0.02% to $56.44
10:35 2nd Hydraulic Engineering Structures and Dredging Congress kicks off in Moscow
10:18 Baltic Dry Index is down to 635 points
10:00 IMO Secretary-General urges all aboard for GHG reduction
09:34 Baltiysky Zavod completed shaping ice belt of nuclear-powered icebreaker Ural of Project 22220
09:25 Keppel delivers jackup rig to Grupo R on sale and leaseback deal
09:15 FESCO new vessel starts working on a regular service among the ports of China and Far East of Russia

2019 February 19

18:03 San Vicente Terminal Internacional receives two state-of-the-art cranes to enhance operations
17:50 Throughput of port Kavkaz in Jan’2019 fell by 8% Y-o-Y to 1.82 million tonnes
17:26 Moody´s upgrades Hapag-Lloyd credit rating to B1
17:03 Jan De Nul's PDC and Bangladesh PPA to pick engineer services provider for Payra dredging project
16:29 TMA Logistics, CTU and VCL join forces to establish Amsterdam-Utrecht-Rotterdam-Corridor
16:21 NIBULON shipbuilders finish constructing a series of POSS-115 Project tugs
16:03 MOL conducts underwater drone demonstration test for vessel bottom inspection