Hull-integrated cooling system for stern trawler

16 September 2022

Norwegian shipbuilder Vard has placed a contract with Hydroniq Coolers to deliver the marine seawater cooling system to a newbuild stern trawler being designed and built for Norwegian fishing company Nergård Havfiske.

The new vessel, newbuild 930 from Vard, will be the third highly advanced trawler designed and built for Nergård Havfiske in under four years. Hydroniq Coolers has also supplied the marine cooling system to the two previous vessels.

Under the new contract, Hydroniq Coolers will supply its Rack seawater cooling system to the stern trawler. This type of marine cooling system is integrated in the hull below the main engine room of the vessel, where it reduces temperatures in the ship’s engines and other auxiliary systems through use of seawater – but without taking up valuable engine room space.

The Rack system is designed to increase intervals between each clean and reduce cleaning time when cleaning is necessary. It does not require dry-docking for maintenance and cleaning as the coolers can be extracted from below the engine room, even while at sea.

“Our hull-integrated marine cooling system is a space and energy efficient solution that VARD, Nergård Havfiske and its crew are familiar with,” said Magnar Kvalheim, sales manager at Hydroniq Coolers.

The stern trawler is of Vard 8 02 design, developed by Vard Design, and will have a length of 80.4 m and a beam of 16.7 m. The main engine is a Bergen B33:45L9P marine diesel rated 5400 bkW/7344 bhp at 750 rpm, which drives a Kongsberg Marine reduction gearbox. The gearbox also incorporates a power take-off/power take-in that connect to an ABB motor generator for hybrid propulsion. Auxiliary power is through a Caterpillar 3512C generator set.

Hydroniq Coolers will manufacture and assemble the marine cooling system at its headquarter outside Aalesund, Norway, and deliver it to Vard Brattvaag in Norway in 2023.

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