The International Chamber of Shipping (ICS) has cautioned that small and medium-sized shipowners may face significant challenges in complying with overlapping climate regulations, and called for a single, global system under the International Maritime Organisation.
In a statement on Thursday, ICS reiterated its support for the IMO’s Net-Zero Framework (NZF), which is expected to be formally adopted in October. But it warned that regional schemes such as the EU Emissions Trading System (ETS) could add costly complexity if left in place.
“We also call on those with unilateral and regional schemes, such as the EU ETS, to agree to having one clear and transparent system under the IMO. This is critical if we are to meet the time frames set out,” said Thomas A. Kazakos, ICS Secretary General.
ICS added that while penalties for emissions have been prioritised, stronger incentives for clean fuels and infrastructure investment will be essential to ensure the transition to net-zero shipping.
The IMO’s NZF could take effect in 2028, requiring gradual cuts in ships’ greenhouse gas intensity and penalties for non-compliance.





