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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


Singapore Dredging at Pioneer Shipyard

  Dredging works are underway at the Pioneer Shipyard off the West Jurong Channel Singpore and will continue until 31 July. According to the Maritime and Port Authority of Singapore Port Marine Notice No. 61 of 2014 dated 5 May 2014, the works are being conducted 24 hours daily - including Sundays & Public Holidays - within the working area bounded by the following co-ordinates (WGS 84 Datum): A) 1° 17.252'N / 103° 39.912'E B) 1° 17.529'N / 103° 40.244'E


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


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;


Dredging Components Delivered for Special Mining Vehicles

Final touch to the dredge pump unit (Photo: Damen)

Damen Dredging Equipment is well known for its deliveries of standard dredging components. Usually, deliveries of items such as dredge pumps and dredge valves are for hopper dredgers or cutter suction dredgers. Recent deliveries were for a more exotic use: the Damen dredge pumps and valves have


MAN 32/40 Package for Chinese Dredger

Library photo of the MAN 32/40 engine (Photo: MAN Diesel & Turbo)

Jiangsu Haihong Engineering Technology Co., Ltd. has ordered four MAN 32/40 engines in connection with an order for two 8,000-cubic-meter trailing suction hopper dredgers.   MAN’s scope of delivery covers two shipsets, each including a propulsion package consisting of two 9L32/40


Boskalis Completes Acquisition of STRABAG Wasserbau

Courtesy Boskalis

Royal Boskalis Westminster N.V. (Boskalis) has concluded the acquisition of the dredging activities and assets of STRABAG Wasserbau GmbH. The transaction price of EUR 70 million has been financed from Boskalis' own cash. With the transaction Boskalis acquires the equipment


Boskalis to Build Islands in Indonesia

Artist impression Centre Point of Indonesia Courtesy Boskalis

Royal Boskalis Westminster N.V. (Boskalis) has been awarded a contract by KSO Ciputra Yasmin to construct the land for the Centre Point of Indonesia Project located off the coast of Makassar. The contract value is approximately EUR 80 million


Royal IHC Bags NMDC's TSHD Contract

Royal IHC awarded contract for  TSHD Photo by NMDC

Royal IHC (IHC) and National Marine Dredging Company (NMDC) have signed a contract for the construction of the first custom-build state-of-the-art trailing suction hopper dredger (TSHD) in the Gulf area. The contract was signed at NMDC’s headquarters in Abu Dhabi


Boskalis Wins Abu Dhabi Dredging Contract

Photo: Royal Boskalis Westminster N.V. (Boskalis)

 Royal Boskalis Westminster N.V. has won a contract from the National Petroleum Construction Company of Abu Dhabi, UAE for dredging work related to the installation of an offshore gas pipeline of the Abu Dhabi National Oil Company as well as to an existing offshore gas pipeline.  


Van Oord Consortium Preferred Bidder for Fehmarnbelt Project

Fehmarn Belt Fixed Link Map Courtesy Wikipedia

Femern A/S, a subsidiary of the Danish state-owned Sund & Bælt Holding A/S, has today announced its intention to award a substantial contract related to the construction of a tunnel connecting Denmark and Germany to the Fehmarn Belt Contractors consortium including Van Oord


Boskalis Consortium Preferred Bidder for Fehmarnbelt Project

Courtesy Boskalis

Femern A/S, a subsidiary of the Danish state-owned Sund & Bælt Holding A/S, has today announced its intention to award a substantial contract related to the construction of a tunnel connecting Denmark and Germany to the Fehmarn Belt Contractors consortium including Royal Boskalis


DEME Invests in Flemish Dredging Tech

Cutter Suction Dredger ‘D’Artagnan’ (Photo: DEME)

Following a successful laser cladding pilot project in 2015, Belgian dredging, environmental and marine engineering group DEME has signed a three-year cooperation agreement with VITO spin-off Laser Cladding Venture (LCV) to strengthen the cutter incisors used to dredge hard soils.


Royal IHC Delivers another Dutch Dredger

Photo: Royal IHC

On February 18, 2016, Royal IHC delivered the trailing suction hopper dredger (TSHD) Mahury to Baggerbedrijf de Boer – Dutch Dredging. The twin-screw TSHD was built at IHC’s partner shipyard, MTG Dolphin, in Varna, Bulgaria. The Mahury was launched on August 14 and named on October






 
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