COMMUNITY – Page 28 – Shearwater Research Inc

New Limited Edition Tern TX

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

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

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.

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.

The Shearwater Story

The Shearwater Story

January 26, 2015

We're often asked about how we got started in the dive computer business. This short video production shares a little background about our founders and our company's vision.

Future of Firmware Updates

Future of Firmware Updates

January 21, 2015

Firmware updates are an essential way to add value to the products that we create. It enables us to fix bugs, add new features, and keep our produc...

Petrel Firmware V28

Petrel Firmware V28

December 22, 2014

Fixed a bug in the Dive Planner where under some circumstances an ascent leg would incorrectly labeled as a descent leg and given zero time duration.

Do I have a Petrel or Petrel 2?

Do I have a Petrel or Petrel 2?

December 08, 2014

For those out there with this very enquiry, here is a step-by-step guide on how to determine if your unit is a Petrel or a Petrel 2 if you have a Stand Alone or Fischer

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