Compliance with EEXI regulations from IMO

Many vessels may not comply with International Maritime Organization’s (IMO) Energy Efficiency Existing Ship Index (EEXI) requirements and may therefore require corrective measures to remain in operation. Shipowners need to calculate the vessel's current EEXI value, estimate V_ref and assess the effect of power limitation or energy-saving solutions.

Evaluate EEXI measures before physical modifications

CFD calculations can provide a faster, more cost-efficient alternative to towing tank tests and sea trials for evaluating speed-power curves. The analysis can include EPL, ShaPoLi and energy-saving solutions, helping shipowners assess the expected EEXI effect before installation, dry-docking or a subsequent sea trial. The service is part of our expertise area Maritime and offshore engineering, and we also offer to calculate and review vessel emissions and CII.

Uncertain EEXI values delay corrective action

When the current EEXI value and V_ref are unknown, shipowners cannot determine whether the vessel needs EPL, ShaPoLi, energy-saving devices, or another corrective measure. This can delay planning and make it unclear whether the expected action is sufficient.

Power limitation may affect profitable operation

EPL or ShaPoLi can reduce vessel speed, thereby lowering fuel consumption and emissions, but a longer transportation time can reduce chartering interest and affect the ability to operate the vessel profitably. The expected effect must therefore be assessed before selecting a power limitation.

Early installation can increase cost and effort

Installing energy-saving devices before their expected EEXI effect is assessed can lead to unnecessary dry-docking, installation work and later sea trial activity to determine the exact EEXI value. This creates a risk of spending time and cost before the effect is known.