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A closed fist held against the chest.
Also known as: Reserve air sign diving, Fist on chest signal
The diving hand signal meaning that a diver's air supply has fallen to a agreed reserve level.
Means that a diver's air supply has fallen to an agreed reserve level.
Contexts: Public information
Reports a threshold agreed before the dive rather than a fixed quantity, so the same signal means different pressures to different pairs of divers.
Contexts: Public information
A closed fist pressed flat against the centre of the chest, the arm bent across the torso.
A fuller structured visual breakdown is not yet documented for this symbol.