STCW - Minimum Safe Manning

Minimum safe-manning guidance per IMO Res. A.1047(27) - screening check against typical number of officers, ratings, and deck/engine department.

ManningSTCWSafe manning

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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

n_{crew} = f(GT, P_{ME}, \text{trade})

Symbol	Meaning	Unit
$GT$	Gross Tonnage
$P_{ME}$	Main engine power	kW

Source: IMO A.1047(27)

Minimum safe-manning guidance per IMO Res.