Statical Stability Curve A – Area under curve up to q = 30° to be not less than 0.055 meter-radian. B – Area under curve up to q = X° to be not less than 0.090 meter-radian. C - Area between 30° and q = X° to be not less than 0.030 meter-radian.

Statical Stability Curve

Mariner

Statical Stability Curve

Statical Stability Curve

A – Area under curve up to q = 30° to be not less than 0.055 meter-radian.

B – Area under curve up to q = X° to be not less than 0.090 meter-radian.

C - Area between 30° and q = X° to be not less than 0.030 meter-radian.

X – 40° or any lesser angle at which water could enter hull ( qf ).

E – Max. GZ to occur at angle preferably exceeding 30° but not less than 25°, and to be at least

0.20 meters at angle equal to ar greater that 30°.

F – Initial GM to be not less than 0.15 metre

qf – Angle of inclination at which openings in the hull, superstructures and deckhouse ( not

closed watertight ) immerse, and angle can be obtained from “PROGRESSIVE

FLOODING ANGLE OF HEEL”.

STABILITY CONSIDERATION

GZ : statical righting arm

GZ max : maximum statical righting arm

q max : angle of inclination when GZ max. occurs

q r : range of stability or angle of inclination where stability vanishes

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