Introduction: A firm step towards the decarbonization of shipping

The International Maritime Organization (IMO) has taken a historic step by approving a new global regulation to reduce pollutant emissions from shipping.

This decision, recently adopted within the Marine Environment Protection Committee (MEPC), marks the beginning of a roadmap that will oblige ships to meet new targets for energy efficiency, decarbonization and operational sustainability.

The agreement reinforces the international maritime sector’s commitment to the goals of the Paris Agreement and responds to growing social, institutional and environmental pressure to transform a sector responsible for approximately the 3% of global emissions of greenhouse gases.

What does the new IMO regulation establish?

Main objective

Progressively reduce emissions of CO₂, NOx, SOx and particulate pollutants generated by commercial vessels, with a view to achieving carbon neutrality of shipping by 2050.

Actions taken

1. Stricter energy efficiency standards (EEDI and EEXI) for new and existing vessels.
2. Mandatory implementation of the Carbon Intensity Index (CII), which will measure annual emissions performance per ton-mile.
3. Annual review of emissions by shipping companies with progressive improvement targets.
4. Incentives and penalties based on IIC compliance.
5. Strengthening technical audits and environmental certifications for all international vessels.

These measures will come into force gradually between 2025 and 2030, with ongoing review mechanisms and multilateral monitoring to ensure their effectiveness.

How does this regulation impact the maritime sector?

1. Fleet redesign and new investments

Shipping companies should invest in:

• Vessels with more efficient technologies.
• Alternative propulsion systems such as LNG, green methanol or ammonia.
• Incorporation of rigid sails, Flettner rotors and hybrid batteries.
• Lightweight materials and hydrodynamic designs that reduce drag.

These investments represent an economic challenge but also an opportunity to renew an aging fleet and align it with climate objectives.

2. More sustainable ports

The new regulation encourages the development of green infrastructure in ports, such as:

• On-dock power supply (OPS).
• Alternative fuel refueling stations.
• Environmental and emissions monitoring centers.
• Environmental control zones that penalize the use of fossil fuels within the port perimeter.

This also encourages partnerships between ports and cities to improve coastal air quality and promote sustainable tourism.

3. Economic and logistical impact

• Adjustments in tariffs and charter contracts due to new operating costs.
• Review of marine insurance policies, with premiums adjusted for environmental compliance.
• Preferential access to routes and ports for low-emission fleets.
• Need for technical training for crews and ground personnel on new regulations and clean technologies.

What role does Spain play in this new regulation?

Ports as Algeciras, Valencia o Barcelona are already adapting to sustainability requirements:

• Barcelona is electrifying its docks and is leading an OPS connection plan for cruise ships and ferries.
• Valencia promotes pilot projects with hydrogen refueling and biofuels.
• Algeciras promotes the use of real-time emission measurement tools, supported by European initiatives.

In addition, Spanish shipyards are also incorporating IMO standards in their shipbuilding and repair processes.

In this context, Interseas Naval Service offers solutions adapted to the new regulatory requirements:

• International regulatory compliance support.
• Emissions reduction and energy transition consulting.
• Provisioning, technical inspection and document management services in strategic ports.

Industry reactions

Major shipping lines, associations and international organizations have reacted positively:

• Maersk, CMA CGM y Hapag-Lloyd are already operating zero-emission or hybrid ships, and are announcing new constructions with green methanol.
• International Chamber of Shipping (ICS) welcomes the creation of a global regulated market for maritime emissions, which makes it possible to establish clearer rules.
• ONG as Transport & Environment recognize the progress made by the IMO, although they call for more ambitious short-term objectives.
• The marine insurance industry and international financial organizations are beginning to prioritize projects with a sustainable approach.

Conclusion: towards a new global standard

The new IMO global regulation represents a turning point for the international maritime industry. It forces all players in the sector to rethink their operating model under the principles of efficiency, transparency and environmental sustainability.

This new stage requires not only investments, but also a cultural transformation in the way maritime logistics is planned, operated and valued. The reduction of emissions is not only an environmental goal, but also a new parameter of competitiveness and reputation for companies in the sector.

At Interseas, We are committed to this transition and are working together with our customers to meet the new standards and take advantage of the opportunities offered by this logistics transformation.📩 Is your fleet ready for the new IMO requirements? Contact us for a customized assessment.