Oceans

Oceans S1 Supersonic

A wrist computer with built-in ultrasonic buddy communication. Tap to send a preset message underwater.

Open BLE sync (libdivecomputer)

Syncs wirelessly with third-party apps (Subsurface, Currents, etc.), not just the manufacturer app.

Oceans S1 Supersonic
3.1Comparison Score
$566
Released2019
Max depth rating50m
AlgorithmBühlmann ZHL-16C with gradient factors
Air integrationnone
Wirelessbluetooth
Display2.2in color LED
Batteryrechargeable
Digital compassYes
Gas typesair, nitrox
Gas switches1
CCR capableNo

"Gas switches" is how many different mixes this computer can be programmed to switch between mid-dive, mostly relevant for technical/staged-decompression diving. It doesn't tell you which gas types (air, nitrox, trimix) are supported. See Gas types and the product description above for that.

Pros
  • Ultrasonic "ping" messaging to a buddy, instructor, or divemaster up to 15-20m away, no hand signals needed
  • Haptic vibration feedback for silent alerts
  • All-wireless design, charges on any Qi charging pad
Cons
  • Recommended max depth of just 50m limits it to recreational diving
  • Small Swedish startup (originated as a Kickstarter), thinner service/support network than established brands
  • Ultrasonic buddy messaging only works between two S1/S2 units, no benefit diving alongside another brand's computer
Diver community sentiment
Mixed opinions

Discussion of the S1 Supersonic on Scubaboard dates mostly to its original Kickstarter-era announcement thread, where divers reacted with curiosity but also real skepticism about the core pitch. Several posters questioned how much practical value the ultrasonic "ping" messaging adds over standard hand signals, and pointed out the obvious adoption problem: the feature only works between two Oceans computers, so it's useless diving alongside a buddy on any other brand. Others pressed for details the company hadn't yet published at the time, including display technology, battery/service options, and whether the algorithm supported custom gradient factors, reflecting wariness about buying into a small Swedish startup's first hardware product sight-unseen. The 3D compass, wireless charging, and Bluetooth app sync drew interest without much criticism. Overall sentiment reads as intrigued-but-cautious rather than a clear consensus either way, consistent with a niche product from a small manufacturer with limited long-term ownership reporting.

Scubaboard: Oceans S1 announcement/discussion threadScubaboard: Oceans S1 thread, page 5

Summarized from public forum discussion (Scubaboard, Reddit, and similar), not a survey we ran ourselves. See the linked threads for the original conversations.

The Oceans S1 Supersonic is built around a novelty most dive computers don’t have: built-in ultrasonic communication that lets divers “ping” a buddy or instructor underwater without hand signals. It launched via Kickstarter and went on to ship at retail, and Oceans has since followed it with a second-generation S2. It’s still a niche product from a small Swedish outfit rather than an established dive-computer brand, so parts and service depend on the company’s continued operation.