Air emissions - NOx

Monitoring of regulations

The use of specialized software or of any other verifiable procedure can serve as evidence that the practices below have been implemented.

2.1. Implement a systematic control policy for documenting fuel (bunker notes).

Note: Bunker notes must be conserved, and annual consumption notes must be kept for each ship.

2.2. Use climatology and weather forecasting to take advantage of tidal currents and avoid storms. Plan voyages to reduce running hours and idling time.

2.3. Optimize trim for fuel efficiency when loading ships and barges.

2.4. Follow voluntary slow speed measures in specific zones, as identified by port or governmental authority.

Note: the identified zones are Particularly Sensitive Sea Areas (PSSA) http://www.imo.org/en/OurWork/Environment/PSSAs/Pages/Default.aspx

2.5. Implement a preventive engine maintenance system in order to optimize performance.

2.6. Identify optimal engine speed or engine load for fuel efficiency. Inform crew and ensure awareness of this optimal ‘economic’ speed or engine load. Transit at this speed or load to the extent practicable.

2.7. Implement a replacement program for LED or other energy efficiency light upgrades.

Tugs Only:

2.8. Reduce tug idling with dispatch scheduling and/or provide tie-up locations where awaiting tow or escort.

3.1. Complete an annual inventory of NOx emissions for all the company's ships.

Note: See Annexes 2-C and 2-D.

4.1. Conduct sampling of NOx emissions on at least one of the company’s ships within the last five (5) years. The sampling test plan must be consistent within the fleet, comparable with prior tests, and a recognized methodology, such as ISO 8178 or IMO NOx Technical Code 2008.

4.2. On board one or more of the company's owned ships, install a higher tier engine than required or use and maintain on-engine or after-treatment NOx emission reduction technologies, like selective catalytic reduction (SCR) or exhaust gas recirculation (EGR), or methods that result in a 15% reduction of NOx emissions below the permitted limits.

Note: Permitted limits are published in the document ‘NOx emission permitted limits’ in the Members section of the Green Marine Europe website.

Fulfill one of the following 2 criteria:

5.1. On board the majority (50%+1 representing at least 30% of the gross tonnage) of the company's owned ships, install a higher tier engine than required or use and maintain on-engine or after-treatment NOX emission reduction technologies or methods that result in a 15 % reduction of NOX emissions per ship below the permitted limits.

Note: Permitted limits are published in the document ‘NOx emission permitted limits’ in the Members section of the Green Marine website.
Note: Under the designation of these NECAs, marine diesel engines installed on board ships built on or after 1 January 2021 and operating in the North Sea and Baltic Sea should comply with the Tier III NOx emission limits

OR

5.2. On board one or more of the company's owned ships, achieve a 50% or greater reduction of NOX emissions per ship below the permitted limits by installing a higher tier engine than required or by using and maintaining NOX emission reduction technologies.