Last update : 2026/07/08

ClassNK IMO International Convention Calendar Search

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Revised conventions by the year when entering into force

Result 5

Subjects Requirement
Resolution No.
Entry into force
New Ship
Existing Ship
Ship types Size Implementation Date Convention TEC
Amendments to MARPOL Annex VI on use of multiple engine operational profiles for a marine diesel engine, including clarifying engine test cycles MARPOL Annex VI
MEPC.408(84)
2027/09/01
New Ship All All 1 September 2027 MARPOL
Existing Ship All All 1 September 2027
Designation of NOx ECA (North-East Atlantic) MARPOL Annex VI
MEPC.407(84)
2027/09/01
New Ship All All Ships for which the building contract is placed on or after 1 January 2027;
or in the absence of a building contract, ships the keel of which are laid or which is at a similar stage of construction on or after 1 July 2027; or
ships the delivery of which is on or after 1 January 2031
MARPOL
Existing Ship
Amendments to MARPOL Annex VI on clarification of entries in data reporting required by regulations 27 and 28 MARPOL Annex VI
MEPC.407(84)
2027/09/01
New Ship All All 1 September 2027 MARPOL
Existing Ship All All 1 September 2027
Designation of SOx ECA (North-East Atlantic) MARPOL Annex VI
MEPC.407(84)
2027/09/01
New Ship All All 1 September 2028 MARPOL
Existing Ship All All 1 September 2028
Amendments to NOx Technical Code on Use of Multiple Engine Operational Profiles for a Marine Diesel Engine, Including Clarifying Engine Test Cycles NOx Technical Code 2008
MEPC.397(83)
2027/03/01
New Ship All All 1 January 2028 for a new individual engine or a parent engine of an engine family or engine group that has not been previously certified, based on the issue date of the EIAPP Certificate for the individual engine or parent engine;
In the case of a new member engine to an engine family or engine group for which the parent engine was certified before 1 January 2028, prior to the certification of that member engine it would need to be shown that the engine family or engine group complied with the said amendments no later than 1 January 2030 based on the issue date of the EIAPP Certificate for that member engine;
The amendments do not apply to a marine diesel engine which already has an EIAPP Certificate except:
(i) in the case of an engine that is subject to substantial modification on or after 1 January 2028, the amendments would apply as specified in the definitions of "substantial modification" set out in amended paragraph 1.3.2 of the NOx Technical Code 2008 based on the issue date of the EIAPP Certificate for that engine;
(ii) in the case of an identical replacement engine installed on or after 1 January 2028, the version of the NOx Technical Code 2008 at the time of issuance of the EIAPP Certificate to the original engine applies, unless the replaced engine is already equipped with multiple engine operational profiles, in which case the provisions of the new chapter 8 of the NOx Technical Code 2008 apply
MARPOL 1354
Existing Ship All All 1 January 2028 for a new individual engine or a parent engine of an engine family or engine group that has not been previously certified, based on the issue date of the EIAPP Certificate for the individual engine or parent engine;
In the case of a new member engine to an engine family or engine group for which the parent engine was certified before 1 January 2028, prior to the certification of that member engine it would need to be shown that the engine family or engine group complied with the said amendments no later than 1 January 2030 based on the issue date of the EIAPP Certificate for that member engine;
The amendments do not apply to a marine diesel engine which already has an EIAPP Certificate except:
(i) in the case of an engine that is subject to substantial modification on or after 1 January 2028, the amendments would apply as specified in the definitions of "substantial modification" set out in amended paragraph 1.3.2 of the NOx Technical Code 2008 based on the issue date of the EIAPP Certificate for that engine;
(ii) in the case of an identical replacement engine installed on or after 1 January 2028, the version of the NOx Technical Code 2008 at the time of issuance of the EIAPP Certificate to the original engine applies, unless the replaced engine is already equipped with multiple engine operational profiles, in which case the provisions of the new chapter 8 of the NOx Technical Code 2008 apply