The US Coast Guard have issued a bulletin regarding the recent ratification of the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BWM Convention).
It discusses differences between the BWM Convention and US requirements. It also reports that nineteen BWMS manufacturers are seeking type-approval from the US Coast Guard.
Read more here:
Other publications by the UK P&I Club on BWM regulations and issues may be found here.