Formula
Identical to EPL:
$$ k_\text{shaft} = \left(\frac{\text{EEXI}\text{required}}{\text{EEXI}\text{attained}^\text{before}}\right)^{3/2} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $k_\text{shaft}$ | Fraction of shaft power retained | - | result |
| $\text{EEXI}_\text{required}$ | Compliance target | g CO₂ / (t·nm) | MEPC.328(76) |
| $\text{EEXI}_\text{attained}^\text{before}$ | Pre-limitation attained | g CO₂ / (t·nm) | ship design |
EPL vs ShaPoLi
| Aspect | EPL | ShaPoLi |
|---|---|---|
| Limitation point | Engine governor | Shaft torque meter |
| Full MCR available for emergencies | via declaration | always |
| Added instrumentation | control room | shaft torque sensor |
Sources
- IMO MEPC.335(76).