Safety · 5 June 2026

How to Choose the Right ABC Dry Powder Fire Extinguisher for Your Vessel

From 1 KG cabin units to 4.5 KG engine room extinguishers — a practical guide to sizing, placing, and maintaining ABC dry powder extinguishers on board.

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ABC dry powder extinguishers are the workhorses of shipboard fire protection, effective against Class A solids, Class B liquids, and Class C gas fires. But choosing the right capacity for each space makes the difference between a contained incident and an escalating one.

For cabins, wheelhouses, and small service spaces, the Sea Keepers 1 KG and 1.5 KG stored pressure units offer quick one-handed response. Galleys, workshops, and electrical panels are better served by the 2.5 KG unit, while engine rooms and facility risk areas call for the 4.5 KG extinguisher with discharge hose for stronger, directed coverage.

Placement matters as much as capacity: extinguishers should sit on escape routes and near — but not inside — the risk zone, so crews never have to pass through a fire to reach one. Mounting heights, signage, and monthly visual checks all form part of a sound shipboard fire plan.

Sea Keepers supplies the full ABC dry powder range with stored pressure operation and clear maintenance documentation, and our team can prepare a vessel-specific extinguisher plan as part of any fire safety equipment quote.

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