Narked at 90 are the only AUTHORISED repair centre in Europe. Where better to buy your dive instruments. Speedy turn around, fast deliveries and customer service that is recognised as second to none
Design principles
The Pursuit was designed and built to exceed the requirements of the most demanding technical diver
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.
Service and support...
Narked at 90 has been appointed exclusively by Shearwater Research in Canada as their authorised repair agent for Europe and Asia. Narked at 90 is truly on the 'front line' when it comes to Shearwater products. We have an intimate knowledge of the Pursuit product that no other body has outside of the manufacturer, and therefore you can be rest assured that we can deal with any problems in house. We carry complete parts and components so your Pursuit can be returned to you without interferring with your diving.
Warranty...
Shearwater Research warrants the Pursuit computer for 2 years from date of purchase. This warranty covers parts and labour due to faulty materials or workmanship.
All products supplied are covered by the terms and conditions of the manufacturers guarantee and are covered by the stipulated guarantee period. Consumable products carry a minimum of 3 months guarantee i.e. batteries, 'O' rings. This guarantee specifically excludes faults by accident, neglect and misuse. Routine maintenance, setting up and connection or interface with any third party products other than those manufactured by Narked at 90 or other authorised product are not covered under the manufacturers guarantee.
Configurations...
The Shearwater Pursuit is available in five configurations to suit your diving or your pocket. Each configuration is fully upgradeable to any other via PIN access that you can get from us. The full list of features for the Shearwater Pursuit are illustrated below:
Buhlmann algorithm decompression.
User configurable gradient factor conservatism
Automatic switch-on by depth and/or pressure
Automatic ambient light sensing LCD illumination
User selectable oxygen percentage for calibration
Configurable automatic or manual setpoint changeover
Set point and sensors displayed while in menus
Handset crush depth exceeds 185 meters.
5 open and 5 closed circuit programmable gases
Gases can be switched during a dive
No lockout
Battery life of up to 360 hours
Millivolt display for all cells ‘on demand’
End user updateable firmware via infra red interface
Easy to read
Simple to use
Adaptive menus
Ascent Rate Display
Battery Warning
Battery Voltage
Metric (Decimal Meters) and Imperial
CNS Tracking
Automatic Backlight
Flip Screen for left or right hand use
Open circuit Nitrox, Trimix and Heliox gases
Semi closed circuit mode where the decompression algorithm will use the current PPO2 as a FiO2 and will properly predict TTS and time at stop. When in SC mode, air calibration is enabled.
Accessories...
Narked at 90 is the premiere rebreather accessory manufacturer in the world. As such we have a whole host of accessories we manufacture in house for your Shearwater Research dive computer. Each accessory is designed to enhance and increase the safety and reliability of your equipment.