Initial survey for the Ballast Water Management Convention (Reminder) Full-text PDF:TEC- 1113 (30kb) Contact:Machinery Department Issued:15 Jun 2017 As previously informed in ClassNK Technical Information No.TEC-1085 and No.TEC-1086, Ballast Water Management Convention (Hereinafter referred to "the Convention") will enter into force on 8 September 2017. All ships of 400 gross tonnage and above to which the Convention survey applies should have International Ballast Water Management Certificate for the BWM Convention (Hereinafter referred to "the Certificate") on board by the date of entry into force. Accordingly, ClassNK has launched to issue the Certificate following an initial survey subject to the authorization from Administration. For ships not entitled to fly the flag of a Party but which operate under the authority of a Party, ClassNK carries out surveys and issues Statement of Compliance in