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World’s First for Royal Netherlands Navy


The Royal Netherlands Navy has achieved the distinction of becoming the world’s first Navy to install a USCG approved ballast water treatment (BWT) system, fitting two Optimarin units on-board the Landing Platform Docking vessel Zr.Ms. Johan de Witt. Goltens Green Technologies completed the installation at the Navy Yard in Den Helder.

The project is part of a ten-vessel agreement between Goltens and the Navy, which will see turnkey installations of the Optimarin Ballast System (OBS) across a selection of advanced, specialist ships. OBS became the first BWT system to achieve full USCG approval in December last year.

Goltens fitted two OBS units on the 28,395 GT, 176m long vessel, with one 1500m³/h system and one 500m³/h unit. Boasting a combination of automatic back flushing, self-cleaning filters (Boll & Kirch) and powerful 35 kW UV lamps, the systems have the capacity to neutralise all potentially invasive species in ballast water. Alongside USCG compliance the OBS also has full IMO approval and certification from DNV GL, Lloyd’s, Bureau Veritas, MLIT Japan, and American Bureau of Shipping.

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