SDBA
![2 divers with SDBA rebreathers. CGI image.](/Images/godic/202502/09/Aa_2_divers_with_SDBA_rebreathers5527.jpg")
The SDBA (Special Duty Oxygen Breathing Apparatus) is a type of frogman's rebreather breathing set. Many of the world's navies and army marine corps have used it since 1971.
It was made by Mercury Products (contact information) in Billingshurst in England.