Accommodation and support units hosting offshore crews during platform campaigns. CII-exempt; daily fuel-per-POB (person on board) benchmark.
Formula
$$ \text{CO}2^\text{year} = \sum_j F_j \cdot C{f,j} $$
$$ \text{Intensity} = \frac{\text{CO}2 \cdot 1000}{\text{POB} \cdot d\text{op}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $F_j$ | Mass of fuel $j$ | t | bunker log |
| $C_{f,j}$ | CO₂ factor | t CO₂ / t fuel | MEPC.364(79) |
| $Bench (Average POB (persons on board))$ | operational benchmark | – | operations log |
| $d_\text{op}$ | Operating days | d | operations log |
Flotels compete with shore-based crew changes. A typical semi-submersible flotel burns ~ 15 t MGO/day; per-POB intensity sits 30–45 kg CO₂/person-day.
Sources
- IMCA - Accommodation unit benchmarking.
- IMO MEPC.364(79) - Cf conversion factors.