OSV (Offshore Supply Vessel) Fuel & CO₂

OSVs (PSV + OSV combined) sit outside the IMO CII regime because they're not in transport service. This calculator gives an operational-day fuel + CO₂ rollup plus a DWT-normalised intensity for internal fleet benchmarking - the North Sea Oil & Gas Authority's EPOD dashboard uses the same metric.

Ship typeOffshoreOSV

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{CO}_2^\text{year} = \sum_j F_j \cdot C_{f,j}, \quad \text{Intensity} = \frac{\text{CO}_2^\text{year}}{d_\text{op}}

Symbol	Meaning	Unit
$F_j$	Mass of fuel $j$	t
$C_{f,j}$	CO₂ factor	t CO₂ / t fuel
$d_\text{op}$	On-hire operational days	d

Source: Oil & Gas UK - EPOD; DNV - Offshore Vessel Environmental Performance

In short

Operational fuel and CO₂ rollup for offshore supply vessels - daily intensity and annual totals.

Learn the theory Specialised Ship Types: Ro-ro, Reefer, Heavy-Lift