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‘Taccola’

Damen Shiprepair Amsterdam further strengthens its position in the dredging market with the installation of a backfill pipe assembly to trailing suction hopper dredger ‘Taccola’

Date
April 2016
Ship name
‘Taccola’
Ship type
Dredging
Yard
Damen Shiprepair Amsterdam
Tasks performed for this project
  • Maintenance

The trailing suction hopper dredger ‘Taccola’ visited Damen Shiprepair Amsterdam (DSAm) for conversion work to a trencher. The main part of this work involved installing a backfill pipe on the vessel’s port side to allow for discharging while trenching. The vessel was lined up for a forthcoming job in the UK so limited time was available to complete the project.

Preparation

In preparation for the vessel’s arrival, a team at the yard assembled the owner supplied dredge and backfill pipes on the quayside at DSAm’s dock no. 4.

Once the vessel arrived, installation of the owner supplied winch support was the first task to be carried out. This required first removing several items of deck equipment such as railings, drain pipes and wire baskets. The support was then lifted and welded into the correct position on deck and the new 7,200 kg winch was installed.

After this installation, the next part of the project involved the installation and welding of a new swivel bend foundation to the side of the vessel’s hull together with constructing the gantry foundation footprint and welding this into the correct position in line with the swivel bend foundation. The construction box was then lifted and installed onto this footprint. Again, various items of deck equipment had to be removed, including the Cardan ring, container supports, railings, hopper splash coaming and dredge pipes in order to gain access and space for the installation.

The gantry mast including its hoist swivel arrangement was then installed onto the construction box with stay cables fitted to hold it in position. To support the new backfill pipe, two new cradles were installed against the ship’s hull one in the mid-section and one on the aft. In addition, a new swivel bend, turning gland and the remaining discharge pipes were also fitted.

Planning

DSAm Project Manager Arnold Bregman said: “The project was very smooth due to precise advance planning. All the jobs carried out were performed as identified and defined at the start of the project and no major additional work was required. Due to good and clear communication lines between the yard and client all the owner supplied critical items for the backfill pipe were delivered in good order, even before the vessel arrived.”

Backfill pipe

After all the necessary preparation work, the backfill pipe assembly was then lifted, fitted to the swivel bend and onto the support cradles and connected to the hydraulic system and hoist swivel system.

In connection with the new backfill pipe installation, DSAm’s sister company and piping work specialist, Niron Staal Amsterdam, was tasked to install the large number of hydraulic pipes connected to the installation.

Repairs

Other tasks performed while the vessel was in drydock included prefabricating four ripper pick-points, assembling and installing these onto the drag head of the suction pipe on starboard side of the vessel.

Damage to the bottom of the hull was repaired, the forepeak tank was cleaned and blasted and then painted and modifications were carried out to the boat landing equipment with the landing pipes renewed. The hopper catwalk supports were also removed with new supports fabricated, fitted and welded.

‘Taccola’

'Taccola' has a hopper capacity of 4400m3 and the vessel is 95.3 meters in length with a breadth of 21 meters and a dredge depth of 25 / 28.5 meters. ‘Taccola’ is the third vessel belonging to Jan De Nul to visit DSAm with work previously carried out to cutter suction dredger ‘Leonardo da Vinci’ and trailing suction hopper dredger ‘Bartolomeu Dias’. DSAm has also carried out several other dredging vessel related projects recently including that to ‘Brittania Beaver’, ‘Willem van Oranje’ and ‘Flintstone’.

DAMEN SHIPREPAIR AMSTERDAM

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Damen Shiprepair Amsterdam is equipped with excellent facilities capable of meeting the highest expectations in both speed and quality.

  • The main part of this work involved installing a backfill pipe on the vessel’s port side to allow for discharging while trenching
  • Installation of a backfill pipe assembly to trailing suction hopper dredger ‘Taccola’
  • The trailing suction hopper dredger ‘Taccola’ visited Damen Shiprepair Amsterdam (DSAm) for conversion work to a trencher
  • The main part of this work involved installing a backfill pipe on the vessel’s port side to allow for discharging while trenching
  • Installation of a backfill pipe assembly to trailing suction hopper dredger ‘Taccola’
  • The trailing suction hopper dredger ‘Taccola’ visited Damen Shiprepair Amsterdam (DSAm) for conversion work to a trencher

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Eirik Eide

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Hans Bisschop

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Klaas Kuper

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Alexandre Richerd

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Hans van Doorn

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Hans Bisschop

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Jorrit Pilaar

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Hans Bisschop

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