MARPOL Annex VI - NOx Tier III Limit

NOx emission limit for Tier III (ECA) per MARPOL Annex VI Reg. 13 - keel dates ≥ 2016-01-01 operating in North American / US Caribbean / Baltic / North Sea ECAs.

NOxTier IIIECA

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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

NOx = \begin{cases} 3.4 \& n < 130 \ 9 n^{-0.2} \& 130 \leq n < 2000 \ 2.0 \& n \geq 2000 \end{cases}

Symbol	Meaning	Unit
$n$	Rated engine speed	rpm

Source: MARPOL Annex VI Reg. 13.5

In short

NOx emission limit for Tier III (ECA) per MARPOL Annex VI Reg.

Learn the theory Baltic Sea SECA + NECA: MARPOL Annex VI emission control areas