HomeCalculatorsSubdivision - p-Factor (Damage Probability)

Subdivision - p-Factor (Damage Probability)

Probability p of damage in a given longitudinal zone per SOLAS II-1 Reg. 7-1 - based on zone length and position along L_S.

Subdivisionp-factorProbability
Damage probability p
0.0667 -
Formula, assumptions, and limits

Simplified middle-zone approximation. Full Reg. 7-1 uses piecewise J_max and coefficient c depending on whether damage reaches L_S. A = Σ p·s is attained subdivision index.

Symbol legend

SymbolMeaningUnitSource
Zone boundaries along L_Smdamage case layout
Subdivision lengthmSOLAS II-1 Reg. 2