Shearwater Desktop 2.5.1
New Features/Improvements:
Order Preferences are now saved between sessions for dive rows
UI Improvements:
Added blue colour scheme back Dive De...
Why do you calibrate a CCR with pure Oxygen?
A CCR diver often has multiple gasses available, any of which could in theory be used for calibrating the O2 sensors in the CCR. The simple answer is that pure O2 is the best gas for a calibration source, read on to find out why.
Multiple Languages Available for Perdix and Petrel
The Petrel Firmware allows for multiple language selections on your Petrel Dive Computer. The great benefit of this feature is that all menus are translated, keeping the Petrel easy to use for non-English speakers.
Flying After Diving
At Shearwater, we place a high value in the work being done by the scientific community relating to diving and decompression theory. We do our best...
Petrel Firmware V29 is Released
The following is a list of improvements provided by the latest firmware version for the Petrel. This download is recommended for all users of the Petrel and Petrel2 dive computers.
NERD Firmware V09
Release notes for the NERD Firmware V09. Released on June 17, 2015.
Should rebreather divers prebreathe test their rebreathers prior to a dive?
Reviewed in 2025.
For many years it has been common practice for rebreather divers to start breathing from their rebreather prior to the dive. Ther...
Shearwater Spans the Globe
We were very busy at Shearwater during the month of March. We managed to trot around the globe to 3 different trade shows: OZTek Dive Conference & Exhibition, Dive Resort Travel Shanghai, and Beneath the Sea.
Shearwater and the CNS Oxygen Clock
The question of what CNS oxygen exposure is safe can spark heated debate among technical divers. This reflects the seriousness of CNS oxygen toxicity when diving. This article sidesteps that debate, and focuses solely on how Shearwater dive computers calculate the CNS value.
