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Dredger

Dredger Conversion and Upgrade

Photo: Dredge Yard

Dredge Yard, a company specialized in dredging and mining components, equipment and technologies, shares insight  into the upgrading of equipment, modification of dredging system and conversion of existing vessels into dredgers.    Upgrading existing dredger systems is quite practical as it offers reusability and functionality of the old dredger with low investment. Converting an existing vessel into dredger can help in increasing the capacity and capability of the dredging companies in much lesser time with a huge saving in investment.   Dredger modifications are also needed when the dredger supplied may not meet the requirements and slight changes in the parts or systems to make it appropriate for the project requirements.   All types of dredgers can be subject for modifications, varying from replacing a single pump with more efficiency, to the whole suction/discharge system of the dredger, or converting existing barges and vessels into dredgers.   Upgrading dredge pumps  A dredge pump or sand-slurry pump is considered the heart of the dredger and plays the most vital role in the dredger’s efficiency.    Dredge Yard’s senior design engineer , Manish Jangir, said, “Latest tools in the market like CFD and optimum design calculating software have widen the paths of having an efficient pump design for the same old pump without changing any fitting parameters or the connections like the flange.”


Damen Delivers 3 Dredges

Damen Shipyards delivers three Cutter Suction Dredgers to Azerbaijan.   On 24 January 2012 Dutch shipbuilder Damen Shipyards delivered three Cutter Suction Dredgers of its CSD 500 series to the Ministry of Emergency Situations (MES) in Azerbaijan. After delivery, President Ilham Aliyev and Minister of Emergency Situations Kamaladdin Heydarov examined the dredgers at the premises of the Yacht Club in Baku. Damen representatives briefed the President and his party on the functions and


Netherlands Shipyard to Build Ship for China

China order suction dredger: Image credit IHC Merwede

IHC Merwede says it has been successful in securing orders worth € 350 million for a wide range of dredging and offshore vessels and equipment, including a large trailing suction dredger for a Chinese customer. News of the orders as follows: The company's Dredging division has confirmed new contracts for the delivery of a large custom-built trailing suction hopper dredger, with units that will be supplied by IHC Beaver Dredgers as well as a cutter suction dredger training simulator


Damen Delivers Reservoir Dredge Package

Barracuda in action - Algeria Photo Damen

The Damen Field Service crew has just returned from commissioning the Barracuda cutter suction dredger in Algeria. The customised Damen Cutter Suction Dredger (CSD) 500 has been delivered with a complete dredging package including a booster station and dredge piping enabling immediate start up. The CSD500 will perform maintenance dredging in a reservoir. As reservoir dredging can be quite a challenge, the standard dismountable CSD500 has been customised


Latest Dredging Solutions by IHC Merwede

Photo credit IHC Merwede

IHC Merwede to showcase its dredging, wet mining, and special purpose ships at forthcoming SMM 2012, Hamburg, Expo. A number of impressive scale models will demonstrate the wide range of innovative vessels engineered and manufactured by IHC Merwede. Vessels such as the custom-built trailing suction hopper dredger CONGO RIVER; the self-propelled cutter suction dredger ATHENA; the pipelaying vessel SEVEN PACIFIC; and the well intervention vessel WELL ENHANCER.


Damen TSHD 650 for Gippsland Ports

TSHD 650 artist impression Photo Damen

Damen Shipyards Group is constructing a Trailing Suction Hopper Dredger (TSHD) 650 for Australian client Gippsland Ports.   The TSHD will be the first Damen dredger to operate in the country. The client will use the dredger to maintain entry to the port of Lakes Entrance and the Gippsland Lakes system, in Victoria, which is used by recreational, fishing and supply vessels. Currently, the client contracts a dredger annually to carry out the necessary dredging to maintain port access


CSL to Supply 5 Ships to Shipping Corp, Signs Pact with IHC for Dredgers

Photo: Cochin Shipyard Ltd

 Shipping Corporation of India Ltd (SCI) will buy five vessels from Cochin Shipyard Ltd (CSL) and issue tenders for buying two used liquefied petroleum gas (LPG) carriers as it looks to re-start ship purchases that were frozen after poor financial performance, according to a report in the Live Mint. Both are state-owned entities. CSL has also signed an agreement with Netherlands-based IHC BV to collaborate on constructing dredgers for the Indian market


SENER develops the Finite Element Model for Dredgers

SENER has been hired by Murueta Shipyard for the creation of a global finite elements model of two sectional dredgers of 1,500 m3 and 2,600 m3, and with shipyard number 293 and 294 respectively and both technologically advanced and  innovative. SENER will also develop the basic engineering of the central body for the nº 294, with the close collaboration of the design office of Astilleros Murueta. The study to be undertaken by SENER is the dredgers structural analysis in


Van der Velden Delivers Largest Ever BARKE Rudders

Photo courtesy Marifin Beheer B.V.

The Oceangoing vessels division of Van der Velden Marine Systems has delivered the largest in-house designed BARKE rudders in its history. The two flap-type rudders have been installed onboard the 30,000 m³ trailing suction hopper dredger Congo River. Built for the DEME Group, the trailing suction hopper dredger was launched on 21 January at the IHC Merwede shipyard in Krimpen aan den IJssel (NL). Designed by the Product Design Department of Van der Velden Barkemeyer GmbH


Imtech Receives Contract

Imtech N.V., a technical service provider in Europe, has been commissioned by the Jan De Nul Groep and the wharf Schelde Marine Bouw to automate a number of dredgers and naval vessels. The Imtech Marine & Offshore division acquired the orders, worth a total of $15 million. Commissioned by the Jan De Nul Groep, Imtech is responsible for the on-board integrated dredging automation and instrumentation, navigation and communications for two 11,300 m³ Trailing Suction Hopper Dredgers


Damen Fishery Research Vessel for Angola

Fishery Research Vessel for Angolan Ministry of Fisheries. Photo Damen

The Damen Shipyards Group has received an order for a state-of-the-art, 74 m Fishery Research Vessel from the Angolan Ministry of Fisheries. This special vessel, which has Silent-A/F/R Class notation and features a basic design from Skipsteknisk.


Fire-fighting ASD Tugs Sail to Argentina

Photo: Damen Galati Shipyards

At the end of June, two Damen ASD Tugs 2810 set sail from Damen Shipyards Galati in Romania to Puerto General de San Martin (Argentina) for towing, mooring, and fire-fighting operations in the Argentinian region around Rosario on the Paraná river.  


Three Keppel Dredgers for Jan De Nul

Keppel Offshore & Marine Ltd (Keppel O&M)'s wholly owned subsidiary Keppel Singmarine Pte Ltd (Keppel Singmarine) has secured contracts from Jan De Nul Group to build three Trailing Suction Hopper Dredgers (TSHDs). The TSHDs are worth about S$100 million in total.


Energy Doldrums Force Boskalis to Cut Fleet, Staff

Photo courtesy of Boskalis

Dutch offshore engineer Boskalis said it was cutting 650 jobs worldwide and culling 24 vessels in response to what it called drastic changes in the company's outlook caused by low energy and commodity prices.   The job cuts, including 150 Dutch employees


Wärtsilä to Power Two Indian Dredgers

The new 8000m3 trailing suction hopper dredgers being built for the Adani group  Photo Wärtsilä

Wärtsilä has won an order for two new 8000m3 trailing suction hopper dredgers being built for the Adani group, India's largest private multi-port operator. The vessels are the first of a new IHC Beagle series designed by Royal IHC (IHC) of the Netherlands. IHC will also build the dredgers


Damen Wins Best Paper Award at WODCON

Klaas Slager during his presentation on dredge pump efficiency (Photo: Damen)

At the WODCON 2016 held last week in Miami, Damen was awarded the “Best Paper Award” for a paper on efficient dredge pump design, written and presented by Klaas Slager.   The WODCON is the annual conference of the Wester Dredging Association


Trelleborg Debuts New Dredging Hose in China

Photo: Trelleborg

Trelleborg’s engineered products operation is now manufacturing a pre-bend rubber dredging hose in China – the only one of its kind available in the country, according to the manufacturer.   Currently exclusive to Trelleborg’s Chinese manufacturing operation


MTG Presents Latest Dredging Solutions in Miami

MTG attended the Wodcon XXI World Dredging Congress and Exhibition from June 13-17, 2016, introducing its latest solutions for the dredging market.   The new MTG Systems DMet is a G.E.T system ideal for cutter and hopper dredgers, which improves productivity and increases protection


Damen Sharjah wins Best Yard Award

Presenting the Best New Building Yard Award Courtesy Damen

On 29 May at the presentation ceremony for the International Maritime Awards, held at the two-day Shiptek 2016 conference in Dubai, Damen Shipyards Sharjah (DSSh) received the prize for Best New Building Yard. The trophy was accepted at the ceremony by DSSh managing director Lars Seistrup.


Meercat Workboat for Briggs Marine

Image: Meercat Workboats

U.K.-based Meercat Workboats has sold a custom built monohull workboat to Briggs Marine.     The vessel (Hull no. 28) is 15.5m LOA, and 6m beam.  Fabrication is well under way at Meercat’s Portchester facility in Portsmouth, Hampshire


Damen Delivered Charlock’s Dredge Pumps

Photo courtesy of Damen

The state-of-the-art 3,200 m3 Trailing Suction Hopper Dredger (TSHD) Charlock has been equipped with two Damen dredge pumps. One highly innovative semi-axial dredge pump is fitted on the trailing pipe, the other dredge pump is mounted inboard


Indian Navy Dredger Completes Successful First Year

(Photo: Tebma Shipyards Ltd.)

In mid-April of 2016, the Indian Navy’s grab hopper dredger, Dredger-1 was preparing to depart its birth shipyard following a comprehensive one-year warrantee review. Tebma Shipyards Ltd., Senior Vice President M. Balasubramaniam explained that the 44.15 by 12


Royal IHC Upgrades Three CSDs for NMDC

Al Sadr (Photo: Royal IHC)

National Marine Dredging Company (NMDC) of Abu Dhabi, a dredging contractor in the Middle East and key player in the creation of the new Suez Canal, has granted Royal IHC an order to upgrade the automation of three heavy-duty cutter suction dredgers (CSDs).  


Damen Shipyards, Saudi Border Guard Strengthen Ties

Both CSD450s have been fitted out with optional anchor booms (Photo: Damen)

Saudi Border Guard has acquired two Damen Cutter Suction Dredgers (CSD 450) for harbor maintenance duties. As Damen has a full range of dredgers in stock, it could customize and ship two full option dredgers within a short time span.  


Damen Ships Modular Dredger to the Andes

Photo: Damen

Reservoirs are notoriously tricky to maintain: from the surrounding area plenty of sand and silt is brought in by the river and the material deposits at the dam. As reservoirs are usually rather deep, dredging can be quite a challenge. For the Tablachaca dam in Peru another challenge was added;






 
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