What other methods can you use in communicating underwater?
“There are several ways to communicate underwater within a team, such as writing on wetnotes or a slate, by torch, touch contact or most commonly by hand signals. When using a rebreather, it is also quite possible to talk through the DSV/BOV mouthpiece of the loop.
Why is it important to communicate underwater when scuba diving?
It is used to convey important messages to the other divers including letting your buddies know “you are OK” and indicating the presence of one of the wide variety of fascinating marine lives. These hand signals are important as it can definitely make a difference in the unlikely event of an emergency.
What happens if you laugh while scuba diving?
The gas you breathe from a scuba tank can be a bit dry, and sometimes it’s necessary to cough. Or maybe, while laughing at your dive buddy, you get a little water down your throat. It’s perfectly alright to cough into your regulator until your airway is clear.
How do submarines communicate when submerged?
A recent technology developed by a team at MIT combines acoustic signals and radar to enable submerged submarines to communicate with airplanes. An underwater transmitter uses an acoustic speaker pointed upward to the surface. The transmitter sends multichannel sound signals, which travel as pressure waves.
Why do divers have squeaky voices?
Did we mention the squeaky voice? Helium changes the pitch of the voice and the deeper they go, the more squeakier the voice gets (like Donald Duck on speed). Sometimes Bonny just can’t understand a word her husband says at all when he calls home from the phone on board the hyperbaric chamber.
Why do divers touch their heads?
‘OK‘ and ‘Problem’ on the Surface
The “OK” sign is made by joining both arms in a ring above the head, or if only one arm is free, by touching the top of the head with the fingertips. To indicate a problem the diver waves his arm overhead to call for attention.
Why are hand signals important in diving?
Hand signals are always responded to (usually with OK) so that both buddies know they have successfully communicated. Lack of response may mean the buddy has lost concentration, has something wrong, is cold on the way to hyperthermia, narcosed at depth or just plain rude!