Margin-line clearance check - in damaged condition, the waterline must not immerse the margin line (76 mm below bulkhead deck at side) per SOLAS II-1 Reg. 7.
Formula
$$ \text{clear} = (h_{BHD} - 0.076) - (T_{dam} + y_{half} \tan\theta) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $h_{BHD}$ | Bulkhead deck at side | m | GA drawing |
| $T_{dam}$ | Damaged mean draft | m | hydrostatics |
| $\theta$ | Damaged heel | deg | damage case analysis |
Sources
- SOLAS II-1 Reg. 7.