What should be the first response when a fire is detected on board?

The first response when a fire is detected on board should be to sound the alarm. This action serves as a critical safety measure because it alerts all personnel in the vicinity about the fire, enabling them to take necessary precautions and initiate evacuation if required. Sounding the alarm ensures that everyone is aware of the emergency situation and can cooperate effectively in responding to it.

Following the alarm, emergency response protocols can be initiated, which may include attempting to extinguish the fire or assessing the situation. However, without first alerting others, the chances of a coordinated and effective response to the fire are significantly decreased. Promptly informing everyone on board can save lives and minimize risks associated with the fire, making it a crucial first step in fire response.