Market uncertainty demands a framework that tests real-world fit.
Technology, safety, supply, operations, and economics.
What matters is how deep the preparation goes.
Decision discipline and better timing.
The first assessment area is technical readiness. This examines whether the main engine is designed for or convertible to alternative fuels, whether auxiliary systems are compatible, and whether the vessel’s energy balance remains stable under changed fuel properties. With methanol, for example, the volumetric heating value drops considerably compared with HFO, requiring larger tank capacities and adapted injection systems.
The second area concerns safety. Every alternative fuel brings its own risk profile: methanol is toxic and has a low flashpoint; ammonia is highly toxic and corrosive; LNG requires cryogenic handling. The assessment must verify for each fuel pathway whether the existing safety systems – gas detection, ventilation, emergency shutdown, escape route concepts – meet the requirements of the IGF Code or future interim guidelines.
The third area is security of supply. A vessel can be technically perfectly prepared, but if the target fuel is not available on planned routes, the readiness remains theoretical. The assessment must therefore incorporate concrete bunkering locations, suppliers and availability forecasts for at least the next five years.
The fourth area encompasses operations. This includes crew qualification, adaptation of operating procedures, integration into existing safety management systems and the availability of spare parts for new system components. Crew competence in particular is underestimated in many assessments – yet it determines whether a system can be operated safely and efficiently in daily practice.
The fifth area is economics. Here, the total costs of a conversion or newbuilding are weighed against the expected benefit: fuel cost reduction, avoidance of EU ETS charges, CII improvement and residual value preservation. Only when all five areas are considered together does a reliable picture of actual readiness emerge.
A structured readiness assessment is not an end in itself but the foundation for three concrete decisions: first, whether to invest in readiness or maintain the current state; second, which fuel pathway is realistic for the respective vessel and planned trade; third, at what point a conversion or new order would be economically optimal.
In practice, many assessments fail because they are conducted too superficially. An assessment that only captures technical parameters without incorporating supply and economics produces results that will not withstand scrutiny in the decision-making body. Conversely, a brilliant economic calculation is useless if the technical basis is missing.
The most common mistake is reducing the assessment to a checklist. Readiness cannot be captured with yes/no questions. Each area requires a qualitative evaluation of the depth and robustness of the existing preparation – and an honest estimation of the remaining gaps.
A European bulker operator conducted a readiness assessment for its entire fleet in 2024 – 28 vessels of varying age and type. The result was sobering: only four vessels had a level of preparation that would enable conversion within 18 months at justifiable cost. For the remaining 24, either tank space preparations, classification documents, or both were missing.
In another case, a container vessel newbuilding was specified as “multi-fuel-ready” without a comprehensive assessment verifying the actual depth of preparation for each fuel pathway. When the owner considered a methanol conversion two years after delivery, it transpired that the “readiness” essentially consisted of reinforced foundations – the entire tank system planning was absent.
A readiness assessment should be conducted on four occasions: before a new order, before a planned conversion, when developing a fleet strategy, and in S&P transactions with a readiness component. The scope depends on the occasion – a pre-purchase assessment can be more focused than a fleet-wide analysis.
Methodologically, a three-stage approach is recommended: first, a document analysis of existing classification records, yard specifications and safety reports; then, a technical on-site inspection of the relevant systems; finally, an integrated evaluation that brings all five assessment areas together and formulates concrete recommendations for action.
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