The purpose of this manual is to identify and provide knowledge with respect to the harmful emissions as generated from the ship’s operations while describing changeover procedures for the use of low sulphur fuel as dictated by MARPOL Annex VI. Applicability: According to Annex VI, ships of 400 GT and above, built on or after 19 May 2005, flying the flag of a signatory Party to Annex VI and intending to engage in international voyages will, on delivery, need to obtain an International Air Pollution Prevention Certificate (IAPPC). The existing ships, built before 19 May 2005 will need to be certified no later than the first scheduled drydocking after 19 May 2005 but in all cases before 19 May 2008. Approval requirements: Approval by the Administration is not mandatory