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Last update: 2026/06/02
Application of "Approved Method" to existing diesel engines under the provisions of Revised MARPOL ANNEX VI - Certification of an Approved Method for WARTSILA RTA engines -
As already advised by ClassNK Technical Information No.TEC-0771 dated 13 May 2009, marine diesel engines with a power output of more than 5,000 kW and a per cylinder displacement at or above 90 litres installed on ships constructed on or after 1 January 1990 but prior to 1 January 2000 are to comply with Tier I emission limits using an Approved Method, provided that an Approved Method for that engine has been certified by an Administration (Reg. 13.7.1 of ANNEX VI). On 4 February 2011, the Administration of Germany notified the IMO that they had certified an Approved Method for the WARTSILA RTA engines listed in the table below. As a result, on 17 February 2011, the IMO published the related information in MEPC.1/Circ.743 as shown in Attachment 1. (This"Approved Method" applied to existing diesel engines under provisions of Revised MARPOL ANNEX VI - Certification of an Approved Method for MAN B&W S70MC -
As already advised in ClassNK Technical Information No.TEC-0771 dated 13 May 2009, marine diesel engines with a power output of more than 5,000 kW and a per cylinder displacement at or above 90 litres installed on ships constructed on or after 1 January 1990 but prior to 1 January 2000 shall comply with the emission limits of Tier I using an Approved Method, provided that an Approved Method for that engine has been certified by an Administration (Reg. 13.7.1 of ANNEX VI). On 5 October 2010, the Administration of Denmark notified IMO that they had certified an Approved Method for MAN B&W S70MC. As a result, on 19 October 2010, IMO has published the related information in MEPC.1/Circ.738 (This is the first case that an Approved Method was certified by anDesignation of North American Emission Control Area under MARPOL ANNEX VI (Regulations for the Prevention of Air Pollution from Ships)
Information on Emission Control Areas (hereinafter referred to as ECA) specified in MARPOL ANNEX VI (hereinafter referred to as ANNEX VI) has already been provided in ClassNK Technical Information No.TEC-0654 issued on 13 April 2006 and No.TEC-0771 issued on 13 May 2009. In this connection, the North American area has been designated as a new ECA in accordance with the amendments to ANNEX VI adopted at the 60th session of the Marine Environment Protection Committee (MEPC 60) held in March 2010. The relevant information has been circulated by the IMO as Resolution MEPC.190(60). This ClassNK Technical Information provides information relating to the above matter. 1. Sea area newly designated as ECA The sea area within 200 nautical miles from the coAmendments to MARPOL Annex VI (Regulation for the prevention of air pollution from ships) which comes to effect from 1st July 2010 for non-Japanese flag ships
Amendments to MARPOL Annex VI, adopted at IMO MEPC 58 on 10 October 2008, will become effective from 1 July 2010. This ClassNK Technical Information provides additional information on the modified regulations other than the outline of the amendments to Regulation 13 Nitrogen Oxides (NOx) and Regulation 14 Sulphur Oxides (SOx) and Particulate Matters already described in ClassNK Technical Information No.TEC-0771. Application of the amendments will result in the International Air Pollution Prevention Certificate being re-written using a new form. In addition, related documents such as a list of equipment containing ozone depleting substances and approved VOC Management Plan are to be placed and kept onboard ship. ClassNK offers the following advice on theUse of low sulphur fuels under the EC Directive 2005/33/EC
As already advised in ClassNK Technical Information No. TEC-0687 dated 14 December 2006, ships at berth in ports within the European Union are required to use marine fuels with the sulphur content not exceeding 0.1% m/m as from 1 January 2010, under the EC directive 2005/33/EC. Some issues on the use of low sulphur fuels for safe operations of machinery have been pointed out. "Design and Operational Issues for Use of Low Sulphur Fuels in Diesel Engines and Boilers" is attached for your reference. This ClassNK Technical Information provides items to be considered for establishment of measures against the issues, approval and surveys required, and reporting by ClassNK. 1. Items to be considered For use of low sulphur fuels, ship owners and ship managemRecording engine parameters as required for diesel engines in accordance with MARPOL Annex VI
Reg. 13 of MARPOL Annex VI, concerning Nitrogen Oxide (NOx), requires that a record book of engine parameters is to be maintained onboard. All changes relative to engine components and settings are to be recorded in the record book as required in accordance with 6.2.3.2 and 6.2.3.3 of the NOx Technical Code. All adjustments, part replacements and modifications that affect NOx emissions are to be described in the record book chronologically. Further, it is clearly stated in 6.2.2.7 of NOx Technical Code 2008 which shall enter into force on 1 July 2010, that all part replacements, including 'like-for-like' replacements, are to be described in the record book. As this is in line with ClassNK's previous interpretation of the code, no specific changes to handlThis Technical Information became null and void on 29 Nov 2011.