Which item is essential to have on board for emergency situations?

Having a first aid kit on board is essential for emergency situations because it provides the necessary supplies to treat injuries or health issues that may arise while out on the water. Accidents can happen unexpectedly, and being prepared with a first aid kit can be crucial for addressing cuts, scrapes, bruises, or more serious medical emergencies until further help can be obtained.

A deck chair may enhance comfort on a boating trip, but it does not play a role in emergency preparedness. An additional fuel tank is important for extended trips, but it does not provide support in medical emergencies. A spare anchor can be useful in certain situations, such as anchoring in challenging conditions, but it does not address the immediate health and safety needs that a first aid kit can cover. Therefore, the first aid kit stands out as the most critical item for ensuring safety and readiness for medical emergencies on board.