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Celebrating 20 Years of Diving Innovation

Petrel Firmware V29 is Released

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 v10 Update Reason

A problem in NERD firmware v09 for DiveCAN models has been identified. It affects the PPO2 used for decompression calculations. Any DiveCAN users o...

NERD Firmware V09

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?

Should rebreather divers prebreathe test their rebreathers prior to a dive?

For many years it has been common practice for rebreather divers to start breathing from their rebreather prior to the dive. There has been a recen...

Shearwater Spans the Globe

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.

cns oxygen clock

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.

Shearwater Desktop 2.4.0

Release Notes for Shearwater Desktop 2.4.0. Please note that firmware updates are not installed without the user's permission; the update process is still only instigated by the user.

Battery Contact Issues on Petrel 1

Battery Contact Issues on Petrel 1

February 27, 2015

Shearwater has a strong commitment to quality. In the year following the launch of the Petrel 1 dive computer, we received reports of divers who we...

Petrel Nitrox Trimix Dive Computer

Resolving Battery Problems with Petrel 1

February 27, 2015

If your dive computer is experiencing spontaneous resets, flickering, low battery life, or fluctuating battery levels, then this article will tell you how to fix this problem.

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