HomeCalculatorsPortable Extinguisher Count (FSS Code Ch.4)

Portable Extinguisher Count (FSS Code Ch.4)

Minimum portable extinguishers per accommodation, control-station and cargo area per FSS Code Ch.4 / SOLAS II-2 Reg 10.3.

Fire safety
Accommodation extinguishers
20 -
Machinery extinguishers
4 -
Total portable extinguishers
25 -
Formula, assumptions, and limits

Simplified count - FSS Code Ch.4 §4.1 requires 15 m max travel distance in accommodation, 2 extinguishers in any machinery space containing internal-combustion engines ≥ 375 kW + 1 at each entrance, and extra coverage for control stations, service spaces, galleys. Sizes: 5 kg CO₂ / 9 kg DCP / 9 L foam.

Symbol legend

SymbolMeaningUnitSource
Deck lengthmGA plan
Portable extinguisher count - FSS Code