The US Coast Guard denied requests from four leading manufacturers of ballast water treatment systems (BWTS) to use their favoured test method as a way to certify their gear’s efficacy.
The decision adds to the continued delays for shipowners in deciding what types of gear to install on ships that discharge ballast in US waters.
Last year, Denmark’s Desmi Ocean Guard, Sweden’s Alfa Laval, US-based Hyde Marine and Canada’s Trojan Marinex all put forth BWTS products for approval by the USCG for use in domestic waters.
