IS Code - General Intact Criteria Check

Pass/fail summary of the IS Code 2008 Part A §2.2 general intact-stability criteria: area under GZ to 30°, 40°, 30-40°, GZ at 30°, angle of max GZ, and initial GM.

IS CodeStabilityGZ

Area 0°–30°m·radArea 0°–40°m·radArea 30°–40°m·radGZ at 30°mAngle of max GZdegInitial GMm

Overall result: PASS - all six IS Code §2.2 criteria satisfied

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

A_{30} \geq 0.055, \ A_{40} \geq 0.09, \ A_{30-40} \geq 0.03, \ GZ_{30} \geq 0.2, \ \theta_{max} \geq 25°, \ GM_0 \geq 0.15

Symbol	Meaning	Unit
$A_{30}$	Area under GZ to 30°	m·rad
$GZ_{30}$	Righting arm at 30°	m
$\theta_{max}$	Angle of maximum GZ	deg
$GM_0$	Initial metacentric height (fluid)	m

Source: IMO 2008 IS Code Part A §2.2

In short

Pass/fail summary of the IS Code 2008 Part A \u00a72.

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