By Emilian Buksak: VPS VP, Digital & Decarbonisation Advisory Services & Iroro Eradajaye: VPS Maritime Decarbonisation Manager.

For the third successive summer, VPS have undertaken its Maress Decarbonisation Campaign. This event, which runs from 1st June-31st August has this year seen 12 offshore companies and 298 vessels participate.

Utilising the VPS Maress software platform to improve overall vessel operation efficiency, reducing fuel consumption and hence reduce emissions.  

With two months of the 2025 campaign now completed, the impact is already clear: the campaign has already helped save over 8,000 tonnes of CO₂ from being emitted to atmosphere. This achievement is a direct result of the consistent, conscious efforts from fleet participants. 
 

A huge thank you to our participating partners: 
Boskalis, bp, Havila Shipping ASA, Havila Subsea & Renewables, Island Offshore, North Sea Shipping, Rem Offshore, Sanco Shipping, Simon Møkster Shipping AS, Skansi Offshore, Solstad, Tidewater

As we enter the final month we are encouraging every vessel to carry this momentum forward and finish strongly! 

The Current Leaderboard 
The current leaderboard after two months is shown below, but with one month to go, vessels still have the opportunity to climb this table: 

Vessel Spotlight: Volantis - Havila Subsea & Renewables 
We would like to highlight the vessel, Volantis, a CSV operated by Havila Subsea & Renewables, and its dedicated crew.

Throughout the campaign Volantis spent ~75 % of her days in DP or Transit, modes that account for >85 % of total fuel use. Yet the crew still delivered significant savings through relentless, real‑time optimization. 

“We’re always chasing the next increment. There’s a continuous dialogue between bridge, engine room, charterer and shore management on how to do better. During transits we agree an economical speed window with the client, then run only the engines and thrusters we need - each kept in its sweet‑spot load range.” 
— Master, CSV Volantis 

What moved the needle? 
1. Continuous dialogue with the charterer → minute-by-minute adjustments to speed and schedule, supported by live weather data. 
2. Power‑generation optimization → not just the right number of engines online, but each one loaded for peak efficiency. 
3. Weather‑aware voyage planning → optimal speed profile that balances ETA, fuel burn and sea state.

Congratulations to the Volantis crew – so far your collaboration and focus has truly embodied the spirit of this campaign! There will be a final update upon completion of the 2025 campaign in early September.  

For any shipping companies and their vessels interested in joining next year’s Maress Decarbonisation Campaign please contact: decarbonisation@vpsveritas.com