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Most Common Diving Signals


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Diving signals are communication that divers use underwater with their hands, because communication underwater without special and expensive equipment is impossible.

Without realizing people use a lot of hand or body gestures to express themselves. Movements like shrugging the shoulders for "I don't know", nodding the head for "Yes" and shaking the head for "no" are very common in our society. Also couples who have lived together  for a while can communicate with body, eyes and hands and they don't need to speak to understand each other.

All the signals were created for better understanding between divers, because going every time to the surface to communicate is dangerous and some time there is no time for writing everything on a slate. The signals were also introduced by military divers in the early years of scuba diving.

Today it is mandatory to know them before a dive. All diving agencies or organizations around the globe teach their divers hand signals, making some of them to vary from region to region. That's the reason why it is a good practice to always review the diving signals when diving with friends and strangers during the dive briefing.

Many times divers have to create a new set of hand signal depending on the different circumstances of the dive. The important thing is to always prevent the unpreventable  and always stay safe.  

Demonstration of Diving Signals

Please hover the mouse over the diving signals for demonstration. Some signals do not need the animation or we are currently working on them.
OK Signal:  This represents "okay" or acceptable or good enough. Also represents the question:  ARE YOU OK? And it is also used to respond: YES I AM OK. Hover the mouse over signal
OK Signal At The Surface:  With the same meaning that the OK signal but it is used only at the surface and from a distance, because hand signals are difficult to see from far. Also you could use both arms and make it more visible from a distance.
Problem Signal:  This one represents a problem or diver in distress. It is helpful if you use the "Pointing Signal" to make your partner understand what is the problem. Problem Signal At The Surface: With the same meaning as the "Problem Signal", it is used only at the surface and better if you use both arms. But if you are holding something in one hand this is the proper signal.
Up Signal:  Means only Up, Lets go up or Going up.
Many new divers use this signal as "OK" and this is a mistake that they learn very quickly.
Down Signal:  Lets go down or going down.
Ascend at: Ascend at certain depth. Must be followed by "Numbers Signal". Descend at: Descend at certain depth. Must be followed by a "Numbers Signal".
Low On Air Signal: This signal must be done close to your chest. It means "Low On Air" 1000 PSI / 100 Bars. When you see the signal for the second time during the dive means your partner has 500 PSI / 50 BARS and you must end the dive. Low On Air Signal No Air Signal: One of the most important signals you must know in case of running out of air. The signal must be done at the neck level. No Air Signal
How much air: This signal is used when asking how much air one has left, or, show me your console to see how much air you have. How much air How much air: Another signal used to ask about your air or to know what your console is reading. Show Me your Air
Low on Air: This indicates low on air, but has been used by some divers to indicate safety stop. Low_On_Air Give Me Air Signal:  When you see this signal from your partner, he will be reaching for your octopus. So your best move will be to cooperate with your partner and surface slowly. Give Me Air Signal
The Turnaround Signal: This signal must be done by pointing the index finger up and moving the finger or hand in a circular motion.   No Air Signal Repeat Signal: This signal must be done by  moving the finger or hand in a circular motion horizontally. This should not be confused with the turn-around signal. No Air Signal
Stop Signal: This diving signal represents "stop" or "wait". Use it with the "Pointing Signal" showing your position will mean "Stop here" or "Wait here". Stop Signal Pointing Signal: This diving signal will represent anything it is pointing at. Example:"Me" or "I", "You", "them", "that", "this", "there", "here", etc. Most times it is combined with "Problem Signal", "Look At Signal" and "Stop Signal". Hover the mouse over signal
Pointing at:
Get Together:  This diving signal represents get together with your partner or group. It also means partner together. Example: this signal and "Question Signal" together means Where is your partner? Diving signal For Get Together or partners together One Leads. The Other's Follow: Both hands are used first as "Pointing Signals". One hand to one diver and the second hand will point at the other, and the result is: I lead, you follow or you lead and I follow. Diving signal For I Lead You Follow.
Come Closer or Come Here: A very common signal in any society, including the scuba diving society. Diving signal For come closer or come here Slow Down or Relax: Also a very common signal. Often the signal is done with both hands. Diving signal For slow down or relax
 Look At:  Very easy diving signal, needs the "Pointing Signal" to be completed.  Diving signal For Loof At At This Level Signal:  This diving signal means at this level, you must level or we will stay at this level. Your hand must move horizontally. Diving signal For Level
Hold Hands Signal:  This is for you and your partner to hold your hands. Diving signal For Hold Your Parner's Hand. Signal For Question:  This signal is commonly used also at the surface. It is used every time to ask a question. What? Where? Who? Etc. Diving signal For Asking A Question
Signal For Cramp:  By opening your hand haft way and then closing into a fist. Used the "Pointing Signal" to show on which leg. Diving signal For I Have A Cramp. Hover Signal:  You will see this signal if you kick the bottom with your fins. It means you must Hover or correct your hover/buoyancy. Both hands must move at the same time horizontally. Diving signal For Hover or stay neutral.
Numbers: Numbers can be a little complicated, because they may represent single numbers, hundreds or thousands. They are used to indicate air pressure, depht and time. Signal for Numbers On Your Knees Signal:  Used during courses and when divers need to wait on the sand. Hover the mouse over signal
Diving signal For On Your Knees.
3 Minutes Safety Stop: At this level... 3 minutes safety stop. The number can change depending on the time required for the safety stop. 3 Minutes safety stop Navigate: When using a compass, this signal is asking which direction to proceed. Which way with a compass

Signal For Narcosis Symptoms: Unable to make decision, impaired judgment and feeling funny due to the depth. Notify your partner.

Narcosis Simtoms Ear Problem: Used at the surface as - I can’t hear you. Underwater, ear problem or problem to equalize. This signal has to be combined with "Problem Signal" Hover the mouse over signal
Ear Problem

I Am Cold Signal: A very common signal to express you are cold.

I'm Cold Think or Remember: A very common signal that does not need introduction." Hover the mouse over signal

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Test your knowledge of diving signals


Night Diving Signals

It is mandatory to always review diving signals when diving with friends and strangers. Please hover the mouse over the diving signals for demonstration.

night dive ok signal Night Diving Signal for OK:  A circle with the diving flashlight represents "okay". It can be used as a  question: ARE YOU OK? or as a respond signal: YES I AM OK. The same signal is used at the surface. night dive problem signal Night Diving Signal for Problem: By moving the flashlight from side to side, it  represents a problem or diver in distress. You must wait for your partner to be near to you in order to explain your situation. The night diving problem signal can be signaled by moving the flashlight up and down. The signal varies from region to region.
night dive signals Some night diving signals can be made simply by putting your hands in front of the flashlight. night dive signals The best way to communicate at night is by shining the flashlight at your chest, away from for eyes. The light will illuminate your chest area, making it easy for your partner to see your signals.
For more about night diving, click here.

Other Diving Signals

Beside the signals used underwater, at the surface there are other diving signals that you should know about.
Diving Flag Animated The diver down flag: indicates that there is a diver below. No other boats are allowed and there is a second, larger zone in which boat's speed is limited. The flag can be placed on a boat or on a buoy. And in some countries it must go down when all divers are out of the water. Today this flag represents scuba diving worldwide.
Diving Flag Animated The Alfa Flag:  in international shipping communications every letter of the alphabet is represented by a colored flag. This flag represents the letter "A” Alfa. By itself means “Diver Down; Keep Clear at slow speed”.The flag must be flown from any vessel that has diving operations going on which restricts ship's maneuvers.
Dive Decom Signal. Surface marker buoys (SMB): Good for signaling boat drivers of your location while performing the safety stop or ascending. SMB makes boat drivers see you from far at the surface. The Yellow SMB it is used more commonly in tech-diving and means emergency underwater/ need assistance (for those divers that have to spend hours on decompression stops).


Diving Signals Quiz

Test your knowledge of diving signals. Send the link below to a friend and see who scores the most.
http://www.scubadivingfanclub.com/Diving_Signals.html#Diving_Signals_Quiz




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