Underwater hand signals
Since we can't really talk under water, it is necessary to communicate using a simple sign language. There are a number of standardized underwater hand signals, which every diver has to know [1].
Before your first dive
All hand signals can be used as a question as well as an answer. In any case, you would expect a confirmation from your buddy to any signal given from you. For example, if you understand his request and agree to it, just answer with the OK signal. You should memorize the following five underwater hand signals before your first dive:
Everything OK(?) or I understood!
Something is wrong! or I have a problem!
Descend or Dive deeper
Ascend or Go up a little
I cannot equalization my ears.
Basic knowledge for Open Water Diver* (OWD*)
The most important signs, which you have to know as Open Water Diver*, are shown below:
What is the remaining pressure in your cylinder?
Level out. or Hold the current depth.
Stay together! or Get together! or Get closer to your buddy!
Relax! or Slow down! or Calm down!
Boat or Ship
Look!
I'm cold!
I'm out of breath!
I'm out of air!
An emergency sign that should never be used without reason.
The following two signs regarding your air supply you have to show your dive buddy or to the dive leader without being asked:
I have 100 bar left in my cylinder.
I'm on reserve! bzw. I only have 50 bar left in my cylinder!
The following signs, which are also recognizable from a distance, can be used on the surface:
Everything OK!
(with both hands)
Everything OK!
(with one hand)
I need help! or Emergency!
An emergency sign that should never be used without reason.
References
- ↑ Article on Wikipedia: Diver communications, visited 2017-03-14.
