Boluda Towage Europe’s tugboat ‘Union Koala’ has been officially certified for compliance with the IMO Tier III standards, on Friday, January 10, 2020; The tug then returned to service during a ceremony at the ABC Tower in Zeebrugge, Belgium.
NOx Tier III standards are in effect in ECAs from January 1st 2016. These limits apply to the North American and US Caribbean ECAs from 1 January 2016. However, MEPC 71 decided that from 1 January 2021, they will also apply to the Baltic Sea and the North...
https://safety4sea.com/europes-first-imo-tier-iii-retroffited-tugboat/