Ballast water management. IMO Legislative Status The BWM Convention will enter into force 12 months after ratification by 30 States, representing 35 per cent of world merchant shipping tonnage. Currently 27 countries representing 25.32% of world merchant shipping tonnage
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IMO Legislative Status
Entry into force
Summary of implementation dates:
Ship constructed before 2009
BW capacity 1500-5000m3 – have treatment system from first intermediate or renewal survey after anniversary date in 2014
BW capacity less than 1500m3 and greater than 5000m3 – have to have treatment system from first intermediate or renewal survey after anniversary date in 2016 (see IACS clarification MEPC 61)
Ship constructed in or after 2009
BW capacity less than 5000m3 shall have a treatment system installed at its second annual survey and no later than 31/12/2011
Ship constructed after 2009 but before 2012
and with a BW capacity greater than 5000m3 shall have a treatment system from first intermediate or renewal survey after anniversary date in 2016 (see IACS clarification MEPC 61)
Ship constructed in or after 2012
with a BW capacity of greater than 5000m3 shall be constructed with a BW treatment system
INTERTANKO would encourage and call for the establishment of uniform industry best practice based on the principles of the IMO Convention.