Shearwater Petrel 3 Dive Computer

Shearwater | SKU: 11301-10

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$1,325.00

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Model

SA Fischer Monitor 4-Pin (30" Cable) Monitor 4-Pin (18" Cable)

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Description

The Shearwater Petrel 3 is a robust, full-featured dive computer with rebreather-proven performance, offering the biggest display in the Shearwater lineup. A 2.6" (6.60 cm) AMOLED screen is protected by a toughened aluminosilicate glass lens, titanium bezel, and titanium piezo touch buttons, and the housing is depth-rated to 290 m (950 ft). Designed and built in Canada, the Petrel 3 runs on a single user-changeable AA battery of any type for long dive times and easy field replacement.

Dive modes cover Air, Nitrox, 3 Gas Nitrox, OC Tec (a multi-gas trimix decompression computer), CC/BO fixed PPO2, and Gauge with stopwatch and dive logging, with support for 5 open circuit and 5 closed circuit gases. The standard decompression model is Buhlmann ZHL-16C with Gradient Factors, with optional VPM-B and DCIEM unlock codes. Air integration is standard, connecting up to four Shearwater transmitters — including legacy models — for open circuit, rebreather diluent, and bailout gas pressure monitoring. A strong customizable vibration alert system, 3-axis digital compass, and Bluetooth dive log downloads round out the feature set. In addition to the stand-alone model, the Petrel 3 is offered in Fischer and 4-pin Monitor versions for direct connection to closed circuit rebreathers.

2.6" (6.60 cm) AMOLED display — the biggest, brightest screen in the Shearwater lineup
Titanium bezel, titanium piezo touch buttons, and toughened aluminosilicate glass lens
Depth-rated to 290 m (950 ft) for deep technical diving
Buhlmann ZHL-16C with Gradient Factors; optional VPM-B and DCIEM via unlock codes
Air, nitrox, and trimix capable with 5 OC and 5 CC gases and quick bailout from CC
Air integration with up to 4 wireless transmitters, compatible with legacy Shearwater transmitters
Strong customizable vibration alerts plus alerts for max depth, dive time, and NDL
3-axis, tilt-compensated digital compass available in all modes
Single user-replaceable AA battery, up to 60 hours on a 1.5V lithium cell
Available as stand-alone (SA) plus Fischer and Monitor 4-pin rebreather-connected models

Features

Display 2.6" (6.60 cm) bright AMOLED, 320 x 240 resolution, the largest and easiest-to-read Shearwater screen.
Durability Toughened aluminosilicate glass lens, titanium bezel, and titanium piezo touch buttons.
Depth rating 290 m (950 ft) housing for deep technical and rebreather diving.
Algorithm Buhlmann ZHL-16C with Gradient Factors; optional VPM-B and DCIEM unlock codes.
Dive modes Air, Nitrox, 3 Gas Nitrox, OC Tec (trimix), CC/BO fixed PPO2, and Gauge with 5 OC / 5 CC gases.
Air integration Standard support for up to 4 transmitters, including legacy Shearwater transmitters.
Battery Single user-replaceable AA of any type; up to 60 hours with a 1.5V lithium battery.
Alerts Strong customizable vibration alert system with configurable depth, time, and NDL alerts.
Compass 3-axis, tilt-compensated digital compass available in all modes.
Models Stand-alone, Fischer, and Monitor (4-pin) versions for rebreather PPO2 monitoring.

Specifications

Feature	Details
Display	2.6" / 6.60 cm AMOLED, 320 x 240 resolution
Lens	Toughened aluminosilicate glass window
Bezel & Buttons	Titanium bezel; 2 titanium piezo touch buttons
Depth Rating	290 m / 950 ft
Battery	Single AA (any type); ships with Energizer Ultimate Lithium AA; approx. 5.25 Wh
Battery Life	Up to 60 hours (1.5V lithium), 40 hours (alkaline), 100 hours (Saft LS14500)
Dive Modes	Air, Nitrox, 3 Gas Nitrox, OC Tec (trimix), CC/BO (fixed PPO2), Gauge
Number of Gases	5 open circuit / 5 closed circuit
Decompression Algorithm	Buhlmann ZHL-16C with Gradient Factors; optional VPM-B and DCIEM
Air Integration	Up to 4 wireless transmitters; compatible with legacy Shearwater (MA8H) transmitters
Compass	3-axis, tilt-compensated digital compass
Alerts	Strong vibration warning alerts (supported with 1.5V non-rechargeable lithium and 3.7V lithium rechargeable batteries)
Wireless Connectivity	Bluetooth wireless technology, upgradeable firmware
Dive Log Capacity	Approx. 1000 hours
Dimensions & Weight	83 x 75.5 x 39 mm (3.3" x 2.97" x 1.5"); 266 g (9.38 oz)
Warranty	2-year warranty

Payment & Security

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WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Pay the extra

It may cost a little more but compared to the Scubapro Hydros Cargo Thigh Pocket, but it’s a night and day difference. I haven’t heard a complaint about the S-TEK.

The S-Tek is made from heavy-duty 1000D Cordura, to meet the stresses of the environment and hard use. How does this compare to Scubapro Hydros Cargo Thigh Pocket, people complaining the material ripping apart at the seams/stitching after 20 dives.

Mounting uses a stainless steel bolt snap to the waist harness D-ring and an adjustable strap for the thigh, the Hydros uses a plastic hook and strap.

The S-TEK is the largest of the three, measuring approximately 10” x 5” x 3” which is big enough to fit my iPhone 15 in the SeaLife SportDiver Ultra Underwater Housing.

I’m not sure where Scubapro all went wrong with the Hydros and Ninja pocket, but for the price of shipping, I would only purchase the S-TEK.

Affordable Fins

Purchased these from Amazon, before I learned about DiveCatalog.com, so while I paid more, they were still an affordable option while waiting on the warranty repair of my Scubapro Supernova fins. I wear a size 12 shoe (NIKE & New Balance) and the chart recommends XL which matched the Supernova XL fins, but to me, the pocket felt a bit tight, so I returned them for the 2XL. While you “can” wear them without a bootie, I wear Scubapro Go 3mm socks (3XL) and the still fit fine. The are positive buoyancy, although I don’t think as positive as the Supernova, but I feel better knowing they will float instead of falling to the ocean floor while doffing them prior to getting back on the boat.

Love the Supernova Dive Fins

My new Scubapro Supernova Fins had a small cut on the top of the boot. I asked the dive shop owner what he recommended to fix the boot. He informed me that they were made of monprene and suggested he reach out to the Scubapro Rep prior to trying to fix them with superglue.

I called Scubapro when I got back to the US and they recommended taking it to a dive shop for a warranty repair. Problem is Las Cruces is the nearest dive shop and that's an 11 hour trip. I took it to a dive shop when I flew back to Virginia, but they had to ship it to California, so the process took longer than my stay.

Being modular, I opted to buy a second set of the boot pockets so I don't have to worry about down time in the future should problems arise. Plus I can use Scubapro S-Tek Pro Blade if I want to go with a neutral or negative buoyancy fin.

Objects in your review mirror are smaller than they appear!

Scubapro Hydros Accessory Bungees are smaller than they look, but the Medium size works well for securing my action camera floatie handgrip in place. To set them up, you loop the bungee back through itself to attach to the d-ring fixation point. The center piece then slides down to clamp the accessory.

While they perform great with the grippy, foamy action camera handle, they may be less secure on heavier gear with a slick surface—like my dive light. For that setup, I’d recommend adding a second attachment point on the BCD (for example, using the metal d-rings with a snap hook on a longer lanyard) to help ensure the light doesn’t end up on the ocean floor.

A necessity for UW photography

ScubaPro Hydros Pro 2 Monorail (Hydros Pro2, Multi-Mount) is a must-have accessory for underwater photographers who want extra attachment points beyond the standard D-rings. I’ve mounted one rail on the left for my SMB, and the right side gives me a clean, stable spot for an action camera on the floatie handgrip.

The Hydros Pro 2 is an outstanding BCD—especially for anyone who has to travel for dive opportunities—but it’s noticeably light on storage and mounting options if you commonly dive with lots of add-ons. This monorail system helps bridge that gap and makes it much easier to carry and position the gear you actually want to use underwater.

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Shearwater Petrel 3 Dive Computer