What is Deaf Volleyball?
Volleyball for the hearing impaired varies only in minor ways from the generic form of the sport. In formal competition it caters for individuals who have a minimum hearing loss of 55 dB in the better ear.
How does it differ from the generic game?
The most predominant difference from the generic form of volleyball is that a red flag is used for signalling in place of the commonly used whistle.
FIVB rules apply (as per Olympic Games) and a red flag is used for signalling instead of a whistle.