Opsealog’s new whitepaper draws on a decade of operational data from more than 1,000 offshore support vessels to argue that fleet operators have a conversion problem, not a data collection problem. Its case studies show how turning vessel data into operational decisions can deliver measurable fuel and emissions savings.
Offshore operators have invested heavily in sensors, connectivity and digital tools, but Opsealog argues that the harder task is making sure the information reaches someone who can act on it.
In its new whitepaper, The Conversion Gap: What Offshore Fleets Lose Between Data and Decision, the French marine data company describes what it calls the “missing loop”. The process requires someone responsible for reading the data, someone qualified to interpret it and a mechanism that turns the resulting recommendation into action onboard.
Without that link, dashboards can sit unused, reports may not reach the people who generated them and operational teams can miss opportunities to improve vessel performance.
“Nobody gets fitter simply by wearing a smartwatch. Progress begins when data is turned into recommendations, and recommendations into action. Offshore fleets are no different, they need to turn data into actionable insights,” said Guillaume Robert, Chief Product & Technology Officer at Opsealog.
Fuel savings show the operational case
One case study involving the Ghanaian-owned AHTS MV Flat Confidence recorded 732.6 m³ of fuel savings and 1,984 tonnes of CO2 reductions over a year of structured fuel monitoring. Opsealog puts the financial saving at close to $850,000 based on current fuel prices.
Applied across a 24-vessel mixed fleet operating off Angola over six months, the same approach reportedly saved 1,108 m³ of fuel and 3,055 tonnes of CO2, with an estimated value of roughly $1.85 million.
The whitepaper also describes a case where conflicting instructions from a charterer and shipowner delayed a decision. Reviewing the same operational data together resolved the issue, showing that better data alone does not guarantee better decisions.
Digital tools need an operational loop
The issue has a regulatory dimension too. The paper notes that EU MRV already covers offshore vessels of 400 GT and above, while European Commission proposals published in July 2026 could extend EU ETS coverage to smaller offshore vessels from 2031. Norway has also confirmed greenhouse gas intensity cuts for vessels operating on its continental shelf from 2029.
“We’ve spent a decade proving that offshore fleets can collect more data than ever. The real test now is whether that data changes what happens on deck. This paper is about closing the loop between insight and action, vessel by vessel,” said Arnaud Dianoux, Founder & CEO of Opsealog.
Digitalisation does not end with collecting more vessel data. The operational return comes when that information is translated into decisions that crews and shore teams can implement.
