ShipCalculators.com

Lifejacket Count (SOLAS III Reg 7)

Minimum number of lifejackets: 100 % POB + 5 % spares on passenger ships + 10 % child-size where children present.

LSASOLAS
Loading calculator…

Formula, assumptions, and limits

Nadult=POB(1+spares),Nchildmax(children,10%POB)N_\text{adult} = \text{POB} \cdot (1 + \text{spares}), \quad N_\text{child} \geq \max(\text{children}, 10\% \cdot \text{POB})
SymbolMeaningUnit
POBPOBPersons on board
SparesSpares5 % on passenger, 0 on cargo

Source: SOLAS III Reg 7; LSA Code Ch.2

In short

Minimum number of lifejackets: 100 % POB + 5 % spares on passenger ships + 10 % child-size where children present.

Learn the theory LSA Code: International Life-Saving Appliance Code