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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.


Cutterhead Shaft Bearing as Good as New After 10 Years of Dredging

The bearing was installed in 2007 to the Royal IHC-built dredger Al Mirfa  (Photo: Thordon Bearings)

After 10 years and more than 100,000 operating hours dredging up silt, sand, rocks and stones in some of the toughest marine environments imaginable, the Thordon Composite bearing installed on the Al Mirfa’s dredge cutter head shaft has emerged unscathed. In drydock where the NMDC-owned dredger is being upgraded, Thordon Bearings’ Dubai-based distributor, Ocean Power International, expected that even the ‘unbreakable’ might need replacing after such demanding


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


Boskalis Orders Self-propelled Mega Cutter

Image: Boskalis

Royal Boskalis Westminster N.V. said it has ordered a new self-propelled mega cutter from IHC Merwede in the Netherlands.    The new dredger will be a sister vessel of the Helios, which will be taken into service for Boskalis later this year.  


Dual-fuel Solution to Drive World's Mightiest Cutter Dredger

The worlds most powerful cutter dredger and the first to be fuelled by LNG, will rely on Wärtsilä propulsion solutions. (Photo: Wärtsilä)

Wärtsilä said it has been contracted to supply a comprehensive package of engines and propulsion machinery for a new cutter suction dredger (CSD) vessel slated to become the world's most powerful and first ever to be fuelled by liquefied natural gas (LNG).  


New TSHD Launched for Van Oord

Van Oord’s first of two new midsize trailing suction hopper dredgers (TSHD), Vox Amalia, has been launched at the LaNaval shipyard in Bilbao, Spain. Its twin, Vox Alexia, is slated to be completed early next year.   “These two vessels are designed for capital dredging


US-built TSHD Magdalen Launched

Photo: Eastern Shipbuilding Group

Trailing suction hopper dredger (TSHD) Magdalen was launched on March 31, 2017 at Eastern Shipbuilding Group’s (ESG) Allanton facility in Panama City, Fla.   The 356’ twin screw dredger is being constructed for the U.S.’s second largest dredging contractor, Weeks Marine Inc


Channel Dredging to Commence in Mumbai

Dredging works for the deepening and widening of the access channel toward Jawaharlal Nehru Port in Mumbai, India is scheduled to commence in the coming weeks and last for approximately two years.   The dredging will enable the country’ largest container handling port


Maintenance Dredging Underway at Port of Cape Town

The Isandlwana, a Trailing Suction Hopper Dredger. (Photo: TNPA)

Transnet National Ports Authority (TNPA)’s Dredging Services division has embarked on a $ 1.1 million maintenance dredging campaign at the Port of Cape Town to restore the design depths inside Duncan dock. The maintenance campaign, which began on March 8, 2017


DSC Completes Series of Works on Jan de Nul Group Vessels

Photo courtesy of DSC

Damen Shiprepair & Conversion (DSC) has recently completed works in Vlissingen and Brest on two major vessels in the fleet of dredging and marine construction specialist Jan de Nul Group. One of these is the Vole au vent, a 140-meter jack-up vessel built specifically for the installation of


India to Develop Inland Waterways in Assam

Photos:  Inland Water Transport, Govt. of Assam

 River Brahmaputra from Dhubri to Sadiya was declared as National Waterway-2 (NW-2) in 1988. A Detailed Project Report (DPR) for NW-2 was prepared by the Howe Engineering Project (India), Central Water and Power Research Station (CWPRS) and Water and Power Consultancy Services (India) Limited


Marine News Boat of the Month: February 2017

Image: Damen

Damen’s All New Marine Aggregate Dredger   Damen Shipyards Group recently unveiled a new line of Trailing Suction Hopper Dredgers (TSHD). The new product range, comprising of the Marine Aggregate Dredger (MAD) 4000 and 5600 vessels


DEME Orders World’s Largest Cutter Suction Dredger

Image: DEME Group

Royal IHC said it has been awarded a contract for the design, construction and delivery of a 164m-long, 44,180kW self-propelled cutter suction dredger (CSD) for DEME in Belgium. The vessel, Spartacus, will be built in the Netherlands for summer 2019 delivery.  


ACO Claimers Delivered for Installation on Nibulon Tugs

Photo courtesy of ACO

ACO Marine has delivered three of its smallest Clarimar wastewater treatment units to Ukraine-based Nibulon Shipbuilding and Repair Yard for installation aboard a series of high specification project tugs. Nibulon, Ukraine’s leading exporter of agricultural products


De Boer Remorquage SARL Orders Custom Tugs from Damen

Photo courtesy of Damen Shipyards

Baggerbedrijf De Boer B.V. (Dutch Dredging B.V.) has ordered two custom, special-purpose tugs to be built at Damen Shipyards Hardinxveld in the Netherlands through the subsidiairy De Boer Remorquage SARL. The tugs are for a 10-year contract with Grand Port Maritime de Guyane in the ports of


Cargo Ship to be Converted into a Dredger

DC Eems prior to conversion (Photo: Kooiman)

Group De Cloedt will have her dry cargo vessel DC Eems converted into a trailing suction hopper dredger.   Kooiman Marine Group in Zwijndrecht has received the order for this project. The DC Eems, currently under management with EemsWerken, (family Kornet) from Werkendam


Boskalis JV wins Santos Port dredging contract

Construction and maintenance of port Photo by Royal Boskalis Westminster N.V.

Royal Boskalis Westminster N.V. (Boskalis) and joint venture partner Van Oord have been awarded a contract by The Brazilian Ministry of Transport, Ports and Civil Aviation for the capital and maintenance dredging of the port of Santos, the largest port of South America


Van Oord JV Bags Santos port Dredging Contract

Courtesy Van Oord

Van Oord has been awarded a contract by the Brazilian Ministry of Transport, Ports and Civil Aviation for the capital and maintenance dredging of the port of Santos. This project in the largest port of South America will be executed in a joint venture with Boskalis






 
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