What is the minimum weight allowed for portable fire extinguishers on board?

The minimum weight requirement for portable fire extinguishers on board is critical for effectively managing fire hazards in maritime environments. A portable fire extinguisher with a minimum weight of 5 kilograms is sufficient to ensure that it contains an adequate amount of extinguishing agent to combat small to moderate fires. This weight provides a balance between portability for crew members and having enough capacity to manage immediate fire risks before more comprehensive firefighting efforts can occur.

The standards are set based on the need for effective response while considering the physical limitations of crew members who may need to quickly access and operate the extinguishers in emergency situations. A 5-kilogram extinguisher is relatively manageable in terms of weight and size, making it practical for use in the confined spaces often found on vessels.

This requirement aligns with safety regulations that emphasize having reliable fire suppression tools readily available on board, making the choice of 5 kilograms the appropriate standard in many maritime regulatory frameworks.