This circular is being made available for use by engine
manufacturers, shipowners, designers, naval architects and Administrations,
to provide guidance in the use of the Cost/Effectiveness Formula,
as set out in regulation 13.7 to MARPOL Annex VI.
This circular will assist those identified in assessing
whether Approved Methods for existing engines, as described in regulation
13.7 of MARPOL Annex VI, could be approved.
The values as identified in the aforementioned Formula are
defined as follows:
between the engines designed weighted specific NOx value
and the applicable limit as stated in regulation 13.7.4.
The rated power (kW) of the
engine(s) as defined on the application for an Approved Method.
The sale price of the components
plus any installation cost above that of regular maintenance.