What does the night signal of a raised arm, fingers extended, indicate?

The night signal of a raised arm with fingers extended indicates that the individual is signaling "I’m alright." This signal is commonly understood among rescue personnel and swimmers as a way to communicate that the person is in a safe or stable condition and does not require assistance. It is especially important to have clear and concise signals in low-visibility situations, such as at night, to ensure effective communication and safety among rescuers.

Understanding this signal can help swimmers and rescuers quickly assess situations in low-light conditions, allowing them to focus on those who may actually be in need of help. The distinction between this signal and others is essential, as various hand signals are used to convey different messages, ensuring that the intent is clearly understood.