ShaPoLi - Shaft Power Limitation for EEXI

Shaft-measured power-limitation variant. Math is identical to EPL; the difference is where the limitation is monitored - at the propeller shaft rather than the engine control system.

IMODesignMEPC.335(76)

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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

k_\text{shaft} = \left(\frac{\text{EEXI}_\text{required}}{\text{EEXI}_\text{attained}^\text{before}}\right)^{3/2}

Symbol	Meaning	Unit
$k_\text{shaft}$	Fraction of shaft power retained
$\text{EEXI}_\text{required}$	Compliance target	g CO₂ / (t·nm)
$\text{EEXI}_\text{attained}^\text{before}$	Pre-limitation attained	g CO₂ / (t·nm)

Source: IMO MEPC.335(76)

In short

Compute the shaft-power limitation required for EEXI compliance. Alternative to EPL per MEPC.335(76).

Learn the theory BIMCO CII and Emissions Clauses