Subdivision - Attained Index A

Attained subdivision index A from partial indices at three drafts - ds (deepest), dp (partial), dl (lightest) per SOLAS II-1 Reg. 6.

SubdivisionA indexSOLAS

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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

A = 0.4 A_s + 0.4 A_p + 0.2 A_l

Symbol	Meaning	Unit
$A_s$	Attained at deepest subdivision draft
$A_p$	Attained at partial subdivision draft
$A_l$	Attained at lightest subdivision draft

Source: SOLAS II-1 Reg. 6

Attained subdivision index A from partial indices at three drafts - ds (deepest), dp (partial), dl (lightest) per SOLAS II-1 Reg.