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Subdivision - Required Index R

Required subdivision index R for a cargo ship per SOLAS II-1 Reg. 6 - a function of subdivision length L_s.

SubdivisionR indexSOLAS

Subdivision length $L_s$m

Required R

0.6145 -

Formula, assumptions, and limits

$$R = 1 - \frac{128}{L_S + 152}$$

For cargo ships $L_S$ ≥ 80 m. Passenger ships use a different R based on N (persons on board) per Reg. 6.2. Attained A ≥ R for compliance.

Symbol	Meaning	Unit	Source
$L_S$	Subdivision length	m	SOLAS II-1 Reg. 2

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