27 January 2025 – Myklebust Verft has awarded Ålesund-based Hydroniq Coolers a contract to deliver the marine cooling system to two subsea vessels the Norwegian shipbuilder is constructing for Rem Offshore.
Newbuild 82 is an energy subsea constructionvessel (ESCV) that will be the first of its kind that can perform heavyconstruction work in both offshore wind and subsea with net zero emissions. TheESCV uses several solutions where energy consumption is almost halved comparedto comparable tonnage in today’s market, as well as meeting future requirementsfor zero emissions from end to end. It will be equipped with dual-fuel methanolengines in combination with battery packs.
Newbuild 83 is a subsea inspection, maintenanceand repair (IMR) vessel. It will have dual-fuel engines capable of running onbio-methanol and biodiesel, along with a battery energy storage system andregenerative energy systems. The vessel is projected to achieve a 90 percentreduction in emissions when operating on bio-methanol and a 30 percentreduction when using conventional fuels compared to existing IMR vessels.
“These are proper next generation subsea vessels.To be able to support these innovative projects with our technology is a greatexperience for our team. We also like to believe that it is a testament to ourcooling systems and ability to deliver, which Myklebust Verft are highlyfamiliar with,” says Magnar Kvalheim, salesmanager at Hydroniq Coolers.
Under thecontract, Hydroniq Coolers will supply its Pleat seawater coolers for both vessels.The Pleat coolers will utilised to reduce temperatures in the ships’ engines,propulsion system and other auxiliary systems through use of seawater to avoidoverheating of the engine and other critical systems.
The Pleatcoolers will provide central cooling of all the vessel’s main motors, includingthe main engine, propulsion system and other auxiliary systems through use ofseawater.
Thepatented Pleat is a module-based titanium cooler for seawater to freshwater.The design of the Pleat ensures a reliable product which significantly reducesthe need to maintain the system. However, when maintenance is required, it canbe done easily and quickly. Maintenance of the Pleat involves dismantling,high-pressure cleaning, and assembly of a few robust elements that are easy toget watertight again.
Compared toa traditional heat exchanger, one Pleat cooling element is equal toapproximately 15 plates. Whereas cleaning a traditional plate heat exchangercan take a significant amount of time to complete, cleaning of the Pleat caneasily be done buy one person within one hour.
“Anotherkey feature of our Pleat system is that it is very energy efficient. This is obviouslya good match for the environmental profile of these impressive vessels,” adds MagnarKvalheim.
Hydroniq Coolers will manufacture and assemblethe seawater coolers at its headquarters outside Aalesund, Norway, and deliverit to Myklebust Verft located at Gursken in Møre og Romsdal county, Norway. Thecompany has not disclosed the value of the contract.
Thecompany’s name “Hydroniq” refers to regulation of temperature throughutilisation of liquids.
