Committed to Cleaner Oceans, Skies, and Supply Chains

At SIEM Shipping, sustainability is more than a goal, it’s a responsibility. Every decision we make—from fleet design
to day-to-day operations—reflects our commitment to reducing emissions, improving efficiency, and protecting the
environments we operate in.

Reducing Our Carbon Footprint

We’re proud of the measurable progress we’ve made across our global operations.

• Onshore emissions: reduced by 65% in one year from 205 to 134 metric tons of CO₂ (2023–2024)
• Fleet operations: achieved a 2% reduction in carbon intensity across our shipping fleet in 2024.

These results are part of our ongoing effort to make every voyage more efficient and environmentally responsible.

Leading with Low-Emission Technology

We continue to invest in innovative vessel modifications and next-generation fuels to drive long-term environmental performance.
Our LNG-powered PCTC vessels are a milestone in sustainable shipping - the first of their size to enter active service:

Up to 25% reduction

in CO₂ emissions, helping us lower the overall carbon footprint of every voyage.

Up to 30% reduction

in NOₓ emissions, improving air quality and supporting cleaner port operations.

Up to 60% reduction

in particulate matter, protecting both marine and coastal environments.

Up to 100% reduction

in SOₓ emissions, achieved through cleaner LNG fuel that eliminates harmful sulphur output.

Global Compatibility

Built to operate efficiently across all major PCTC routes, maintaining flexibility worldwide.

Performance Without Compromise

Delivers the same speed and cargo capacity as conventional vessels..

Our Ongoing Commitment

Our goal is clear—to minimise harmful emissions into the sea and atmosphere through:

• The use of cleaner fuels
• Smarter fleet operations
• Continuous investment in new technologies.

Sustainability at SIEM is a long-term commitment, built on innovation, accountability, and action.

The starboard quarter of the Siem Confucius and Siem Aristotle proudly displaying “Fuelled by LNG”.

Sustainability at SIEM