Condition Assessment Scheme (CAS) The Condition Assessment Scheme (CAS) for oil tankers, as a mandatory requirement under regulation 13G of Annex I to MARPOL 73/78, was originally adopted by the Marine Environment Protection Committee at its forty-sixth session (MEPC 46) on 27 April 2001 by resolution MEPC.94(46) and entered into force on 1 September 2002. MEPC 48 added, by resolution MEPC.99(48), the Model Survey Plan for CAS and the Mandatory Requirements for the Safe Conduct of CAS Surveys (appendices 3 and 4 to CAS) and, MEPC 50, by resolution MEPC.112(50), adopted further amendments to CAS in order to keep its text in line with correspondingamendments to regulation 13G and new regulation 13H of MARPOL Annex I whereby the carriage of Heavy Grade Oil on single hull oil tankers was banned. Finally, MEPC 53, by resolution MEPC.131(53), further amended CAS in order to keep its cross-references in line with the new regulation numbering system in the revised MARPOL Annex I. In view that the revised MARPOL Annex I is expected to enter into force on 1 January 2007, and so is the amendments to CAS by resolution MEPC.131(53), the purpose of this publication is to provide an easy reference to the up-to-date provisions of CAS, including incorporation of all the amendments that have been adopted by the MEPC, up to and including the amendments adopted by resolution MEPC.131(53).
