What are the two available sizes of PKP portable extinguishers?

The correct choice is based on the standard sizes of PKP (Potassium Bicarbonate) portable extinguishers used in maritime settings. PKP extinguishers are designed primarily for Class B fires, which involve flammable liquids. The sizes typically available for these portable extinguishers are 18 pounds and 27 pounds.

These two sizes are chosen to provide a balance of portability and extinguishing capacity. The 18-pound extinguisher, being lighter, allows for easier handling and is suitable for smaller incidents, while the 27-pound version offers a larger volume of extinguishing agent for more substantial fire scenarios. This differentiation in sizes ensures that personnel can select an extinguisher that is appropriate for the nature and scale of the fire they might encounter aboard a vessel.

Understanding these specifics helps ensure that personnel are equipped with the right tools for effective fire suppression during emergency situations.