Minimum number of lifejackets: 100 % POB + 5 % spares on passenger ships + 10 % child-size where children present.
Formula
$$ N_\text{adult} = \text{POB} \cdot (1 + \text{spares}), \quad N_\text{child} \geq \max(\text{children}, 10% \cdot \text{POB}) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $POB$ | Persons on board | - | crew + passengers |
| $Spares$ | 5 % on passenger, 0 on cargo | - | SOLAS III Reg 7 |
Sources
- SOLAS III Reg 7.
- LSA Code Ch.2.