...Dive computers

Technology...

Narked at 90 has worked closely with Shearwater Research in Canada over the last few years to ensure that our customers get the very best that is available. The Shearwater electronics suite has been recently redesigned and is proving to be the most intuitive and reliable electronics available for today's technical diver.

Many improvements have been made to improve safety for rebreather divers, such as the simple bail out procedure. The diver simply presses the menu button and selects "OC" and presses select. This simple action hides a multitude of changes, which are automatically taken care of by the Pursuit computer. Firstly the computer switches the entire gas lists from those which were programmed in as closed, to open circuit. There is no need to switch gases on or off. Then the computer decides on the most appropriate of the open circuit gases that have been programmed by the user for that depth, and also changes the decompression algorithm to take into account the new gases. Time to surface and all decompression stops are recalculated in a blink of an eye. Simplicity when you need it most.

Speaking of decompression algorithms, most technical divers and rebreather divers carry more than one set of electronics. This may be your rebreathers' controller or any other electronics. Matching decompression profiles can be impossible with fixed tables or schedules, this is why the Pursuit used "Gradient Factors" where the user can choose almost any decompression profile that they like. In real terms, this means you have total control over the deep and shallow stop times you want to engage in. You can make the Pursuit as conservative or aggressive as you choose. The choice is yours. In addition, those deep stops are "actually" calculated from tissue saturation compartments and not compulsory and arbitary deep stops which are not calculated like some other third party rebreather computers.

Viewing your dive computer underwater has always been a matter of compromise, whether you set your backlight on all the time and waste battery, or timed to a push button which takes user action. The Pursuit was made to overcome this obstacle with automatic back lighting that adapts to ambient light. When its dark, the backlight is on, when it is bright, it is off. Simple? We think so, but we also think it is additional safety when you consider that you will always be able to see that critical PO2 at a glance. 
The Pursuit has a communications port that allows the user to remote update his computer at any time, this means Narked at 90 can send updates to customers without depriving them of their diving equipment when we improve or add functionality to the system.