Hammerhead Classic

The JM Hammerhead CCR is one of the most advanced Closed circuit mixed gas rebreather in the commercial rebreathing market to date. Innovative, functional and effective, it is the obvious choice for a technical diver’s eCCR.


Dimensions: 7.5” Dia x 23” (Tall canister)


Key Features

  • Compact design
  • Pre Scrubber O2 Injection
  • Industry unique Quick Bayonet mount
  • Quick disconnect tank hostlers
  • 3 Primary O2 sensor cells, standard
  • Primary, Secondary, DIVA options, standard
  • 4th O2 sensor cell with additional eCCR Monitor output, standard
  • 3 Canister, 2 Scrubber and 5 lung options, standard
  • Built in O2 filter protection for solenoid
  • Easily replaceable solenoid
  • Replaceable banana block for o2 sensor connections
  • Ultra reliable JMI ADV and Manual Add Valves


All Hammerhead eCCR can be internal configured for just about any combination of controller’s on the market. The standard HH configuration is as follows:

-Primary controller: Monitoring cells 1 through 3 and firing the solenoid

-Secondary controller: Redundant monitoring of cells 1 through 3 and Powering the DIVA

-(Optional) Tertiary controller: Monitoring Cell 4

The Hammerhead CCR Classic also makes it easy to add any third party monitoring computers as a tertiary ppO2 monitor.  The 4th O2 cell and spare output comes standard on all of our CCR Heads.  We want you to feel confidant underwater and to do so give you the option to dive with any computer you wish.

More Photos

For more information about what goes into every design, visit Juergensen Intelligent Designs

For more information about the controllers, visit  Hammerhead Electronics

For more information about the pieces and part, visit Accessories