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Stop fixing blind: using AIS data to quantify TC-in performance risk in a high-bunker market

14 May 2026

With VLSFO topping $1,000/mt in some ports, bunkers can represent up to 60% of total voyage costs[1]. A vessel burning just 5% above CP spec creates exposure that shipowners and operators only discover after the fixture is done. This article breaks down the financial impact of underperformance, show

With VLSFO prices frequently exceeding $1,000/mt, bunker costs now account for nearly 60% of total voyage expenses, putting immense pressure on shipowners. Recent data from Hellenic Shipping News highlights that vessels burning just 5% above Charter Party (CP) specifications create significant financial exposure. By leveraging AIS data to quantify Time Charter (TC) performance risk, operators can now identify inefficiencies in real-time rather than discovering them post-fixture, a critical shift for fleet management in high-cost bunker markets.

This operational shift aligns with the IMO’s MARPOL Annex VI regulations, specifically regarding the Ship Energy Efficiency Management Plan (SEEMP) and the mandatory Carbon Intensity Indicator (CII) rating system. Compliance departments must ensure that vessel performance monitoring meets the rigorous standards set by classification societies like DNV or Lloyd’s Register. Underperforming vessels not only inflate voyage costs but also risk failing their annual CII audits, potentially leading to restricted trading patterns and decreased asset value under evolving international environmental maritime mandates.

Chief engineers and second engineers must now transition from reactive maintenance to data-driven performance management. These rank groups need to utilize real-time AIS-integrated telemetry to monitor fuel consumption against CP warranties continuously. By proactively identifying deviations in engine performance, they can implement immediate technical adjustments to maintain compliance. Mastering these digital analytical tools is essential for modern technical teams to mitigate financial risk and ensure optimal vessel efficiency during every voyage.

Read the full article on Hellenic Shipping News

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