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Bunker Density vs Temperature

Correct fuel density from the delivery temperature to 15 °C using the ISO 91-1 linear formula. Converts a litre-based bunker volume into the contractual mass.

VoyageBunkersISO 91-1

Bunker figures

Density at 15 °Ckg/m³From the BDN certificate of quality.Temperature at delivery°CVolume delivered (observed)m³

Density at observed T

967.60kg/m³

Mass

483.800t

Formula, assumptions, and limits

α depends on density: for marine residual fuels ≈ 0.640 kg/m³/°C, distillates ≈ 0.700. We use 0.64 across grades as a neutral default per ISO 91-1 Table A.