What daytime rescue hand signal is indicated by a raised arm with an open hand and fingers extended?

The raised arm with an open hand and fingers extended is a universal signal indicating "I am all right." This gesture is widely recognized in rescue operations and maritime communication as a means to convey that the individual is safe and does not require assistance. The open hand and extended fingers create a visible and clear signal that can be easily distinguished from other gestures, making it effective in situations where verbal communication may not be possible.

In contrast, other signals refer to different states or needs; for instance, signaling for assistance or indicating a state of being lost would utilize different motions or gestures entirely. Understanding these signals is critical for effective communication during rescue operations at sea, ensuring that immediate and appropriate responses can be coordinated.