Innovations in the design of hopper dredgers presented at the CEDA Europort event

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Last week, the Central Dredging Association (CEDA), in close collaboration with its member companies, organized the “CEDA Europort Innovation Event”.

Over two afternoons, 24 companies presented their innovations in 15 minute interviews with one of the presentations covering innovation in the design of trailer suction dredgers.

Ensuring that dredging equipment is located away from risk areas is an important consideration for the first trailer-suction dredger to be built with a hydrogen fuel cell as part of its power plant.

The 70 m long vessel, which will be transported to Sète in the south of France upon delivery by the Breton shipbuilder Piriou in the third quarter of 2023, was designed in collaboration with LMG Marin.

The integration of fuel cells is expected to save up to 20% of the amount of fuel oil consumed by the 1,500 m3 dredge, which will be able to pump sand to depths of up to 32 m.

An artist’s impression of the new ship was part of a presentation by Jan Willem de Wit, Managing Director of Holland Marine Technologies covering innovation in trailer suction dredger design as part of his “CEDA Pitch Talk” at Europort 2021, Rotterdam, November 3. HollandMT is a key supplier of dredging systems for the project.

“As with any vessel, it is necessary to locate all dredging equipment away from any area with a risk of explosion, but considerations where hydrogen as a new alternative marine fuel requires special attention,” he said. -he declares.

Safety was also a top concern, as de Wit acknowledged how the vessel Yed Prior performed beyond expectations a year after being converted from a container ship to 5,300 m3 of TSHD sand and gravel by Royal Niestern. Sander for owner Spaansen Marine Aggregates.

Distinctive features of the vessel include innovative moon-shaped gantries with fully electric HollandMT trailing arm winches, developed to limit vessel movements ensuring efficient dredging at water depths of 40m.

According to de Wit, Yed Prior made exceptional use of their 2000 kW submersible dredge pumps during the period, with the moon-shaped gantry profile contributing to the vessel’s stability allowing the vessel’s payload to be increased by 8,000 tonnes to 10,500 tonnes.

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