page_title: Shearwater Research
section_title: History
hierarchical_section_title: Shearwater Research / History
caption_attribution_description: English: A Shearwater Research Predator dive computer attached to a rebreather. Image shows OLED display.
context_page_description: Shearwater Research is a Canadian manufacturer of dive computers and rebreather electronics for technical diving.
context_section_description: From the very beginning the company sought to develop products that are simple to use and easy to read underwater.
  In 2004, Shearwater Research was founded by Bruce Partridge who produced their products in a spare bedroom at his home. As of 2014, Shearwater was producing thousands of dive computers per year in a manufacturing facility with twenty employees.
  Shearwater Research began by building controller boards for the Innerspace Systems Corp (ISC) Megalodon rebreathers in 2004. There was a problem with the configuration and by the end of 2005, ISC was no longer offering the Shearwater electronics package. Since that time, the initial issues have been resolved and Shearwater electronics are again available for use on the ISC Megalodons.
  Shearwater decompression computers began with an implementation of the Bühlmann decompression algorithm into their Shearwater GF in the Spring of 2006. It was available in either the partial pressure of oxygen with decompression or control versions. In January 2007, the Shearwater GF was the computer used with the JJ-CCR.
  With the release of the Predator in 2009, Shearwater moved away from the old LCD display technology to the use of new OLED displays in their computers. This was the first color OLED diving computer available in the market with a user replaceable battery. Power was a major limiting factor in the development process to include the OLED technology.
  Shearwater received their certification for ISO 9001-2008 in 2010 and all their products are compliant with CE, FCC and IC international standards.
  With the Predator, Shearwater also introduced bluetooth to allow easier syncing with their desktop software. Their reason for the move to bluetooth was to make a computer that could be used on multiple operating systems. The Predator's two button design has been called "intuitive and easy to use". The top of the line Predator will also allow for up to five breathing gases for the rebreather and up to five bail-out gasses. The user can make gas switches on the computer at any point during the dive.
  In 2011, Shearwater announced that they had licensed a technique to monitor carbon dioxide absorbent canister developed by the United States Navy Experimental Diving Unit. In collaboration with rEvo rebreathers, they were able to show that the thermal canister CO₂ monitor would work with Shearwater's Predator dive computer.
  Shearwater has continued to develop new ways to calculate decompression in their equipment by releasing an implementation of the Varying Permeability Model (VPM-B/GFS) in 2011. The "GFS" is for Gradient Factor Surfacing and indicates the combination were VPM and GF models are compared and the longer time utilized for the displayed profile.
  The Shearwater Petrel has been called the "Predator with improvements". The Petrel was designed to allow a standard AA battery to drive the power it needs for calculations and OLED display with automatic brightness changing. The unit is 40% smaller than the Predator. The Petrel includes both the Bühlmann algorithm and their VPM-B/GFS algorithm. The Petrel also extends the profile data storage that was previously available from 200 to approximately 1000 hours.
  With the release of the Petrel, Shearwater has also improved the educational materials available to their owners.
  In 2013, Shearwater was presented with the International System Safety Society Award for safety in "Scientific Research & Development" at the 31st International System Safety Conference in Boston.
  Shearwater's NERD or Near Eye Remote Display is a head-up display that places the divers information in front of their eyes. The Shearwater NERD was released at Dive 2013 in Birmingham, UK.
  In 2015, the Perdix wrist mounted dive computer was released. The Perdix is similar to the Petrel but has a 30% longer battery life and a thinner and lower profile. The computer was named after a "grey partridge". (The Founder's surname is Partridge). Unlike the Petrel, the Perdix is only available in a stand-alone configuration and does not have a version that can be connected to a rebrea
caption: A Shearwater Predator dive computer attached to a rebreather. Image shows screen in reverse orientation that allows the diver to decide where they wear the display
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