A fire extinguisher is a vital safety device designed to control or extinguish small fires in emergency situations. It works by releasing an agent—such as water, foam, dry chemical, or CO₂—that suppresses the fire, preventing it from spreading and minimizing damage or injury. Fire extinguishers are essential on ships, workplaces, and homes as a first line of defense against fire hazards.

Proper operation of a fire extinguisher can be remembered with the PASS method:
‣ Pull – Remove the safety pin to unlock the extinguisher.
‣ Aim – Direct the nozzle at the base of the fire, where it feeds on fuel.
‣ Squeeze – Press the handle to discharge the extinguishing agent.
‣ Sweep – Move the nozzle side to side across the base until the fire is completely out.