SEEMP Combined Operational Measures

Stack the percentage fuel-saving contributions of multiple SEEMP Part III operational measures using the standard non-overlapping (multiplicative) formula. Returns combined fuel saving, equivalent CII improvement, and annual cost saving in USD at a user-set bunker price.

SEEMP Part IIICIIOperational

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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{Combined saving} = 1 - \prod_{i} (1 - s_i)

Symbol	Meaning	Unit
$Combined saving$	Combined fractional fuel saving from all measures	fraction
$s_i$	Fractional fuel saving from measure $i$	fraction
$\prod_i$	Product over all measures $i$

Source: IMO Resolution MEPC.346(78) - 2022 Guidelines for the Development of a Ship Energy Efficiency Management Plan (SEEMP); IMO Resolution MEPC.328(76) - Amendments to MARPOL Annex VI introducing SEEMP Part III; IMO Resolution MEPC.364(79) - Cf fuel conversion factors; ICS SEEMP Guide (4th edition, 2023); BIMCO CII Clause for Time Charters (November 2022); DNV Maritime Forecast to 2050 (2025 edition)

In short

Stack the percentage fuel-saving contributions of multiple SEEMP Part III operational measures and report combined fuel saving, CO₂ saving and USD cost saving.

Learn the theory BIMCO CII and Emissions Clauses