Saturation Diving Breathe Timer

The Breathe Timer is a one-button in-browser timer for Saturation Diving. Pick your tank tier, hit start, and the timer counts down with an audio alert when you cross 30% oxygen remaining — the recommended surface window from the How to Survive guide. The widget runs entirely in your browser, never contacts the Roblox client, and never sends data to a server, so it works in private servers, offline lobbies, and on slow connections without lag.

Tank Durations

• Standard Tank — 9 minutes (default for most runs).
• Salvaged Tank — 6 minutes (penalty for hadal pressure; common starter drop).
• Twin Reserve — 12 minutes (mid-tier, sold at the cargo bay for 1.2k credits).
• Cryo Helix — 14 minutes (premium tier, paired with Triton Mark VII for Black Mound).

These are baseline surface times. Pressure reduces them: at 2.4 atm you lose about a third, at 4.2 atm you lose roughly two thirds. The numbers below assume a level 5 Pressure Stability skill; level 11 adds another 30 seconds.

Tips

• Run the timer alongside your dive so you do not have to glance at the in-game oxygen meter every minute. Pair with the Dive Depth Calculator to estimate your drain rate before launch.
• For Black Mound runs, set two timers back-to-back — you will need the spare Rebreather if the first cycle runs hot.
• If you play on mobile, dock the timer next to your Discord tab with picture-in-picture so the alert still rings when the screen is on standby.
• Disable browser battery-saver modes during long runs; aggressive throttling can delay the audio alert by up to two seconds.

Why Use a Separate Timer

The in-game oxygen meter sits in the corner of the HUD and pulls your attention away from sonar, lights, and gear. The Breathe Timer runs in a side tab with a clear chime at every threshold, so you can stay focused on the dive. Many divers keep it next to Discord so they can chat with the squad and watch oxygen at the same time. The combination reduces blackout deaths because the audio alert catches you before the in-game meter starts flashing red — the difference between 25% and 30% is often the difference between reaching the submarine and running out of air two hundred meters from the hull.

When the Timer Matters Most

The timer matters most in high-pressure situations where you can lose track of the in-game meter: Black Mound runs, boss encounters, and long solo expeditions. At Twilight Reef you can rely on feel because the runs are short; at deeper zones the audio alert can save your save file. Always run the timer when you are crossing Mid Ridge or deeper. In public lobbies with three strangers, the timer works as a safety rope — you do not trust the team to call surface time.

How the Timer Calculates Time

The timer uses the baseline tank duration from the in-game data table and applies a coefficient for pressure and your current Pressure Stability skill. The Standard Tank is rated for 9 minutes at 1 atm; at higher pressure, time shrinks on an exponential curve. For example, the Standard Tank gives 9 minutes on the surface, but only about 6 minutes at 2.4 atm (Mid Ridge) and about 3.5 minutes at 4.2 atm (Black Mound). Running the timer with the wrong tank configuration can warn too early or too late — always set the tank tier before you launch a dive. If you have Field Rebreathers in your pack, add 4 minutes per Rebreather you intend to use mid-run.

Syncing With the In-Game Meter

If you want to sync the Breathe Timer with the in-game oxygen meter, start the timer the moment you press the submarine launch lever. The in-game meter counts down from the same instant, so the audio alert will line up with the in-game meter hitting 30%. If the timers drift by more than about thirty seconds, you probably picked the wrong tank tier or you are at a different depth than configured. Adjust and restart before continuing, because following a miscalibrated timer at Black Mound is the fastest way to black out.

Troubleshooting

If the timer does not behave as expected, check three things in order: (1) audio is enabled — most browsers require user interaction before they will play sound; (2) the tab is in focus — background tabs can be throttled; (3) you picked the correct tank tier — a wrong tier will give an inaccurate countdown. If all three are right and the timer still drifts, try reloading the page or switching browsers. On mobile, consider picture-in-picture mode or split-screen to reduce focus loss. If you are still having trouble, file a bug report through the wiki footer so we can update the troubleshooting guide with the next patch.

Combining With Other Tools

The Breathe Timer works best when paired with the wiki’s Dive Depth Calculator. The calculator tells you the maximum safe depth for your current build, and the timer tells you how many minutes you have at that depth. Using both together dramatically reduces the risk of running out of air in deep runs. For new divers, treat the timer as a safety net — it complements the in-game meter, it does not replace full attention to the game. The idea is to have an extra backup layer, not a crutch that lets you ignore what is happening on screen.

Updates and Versioning

The Breathe Timer is versioned alongside the wiki. When the developer changes the tank duration table in a patch, the wiki syncs the new numbers within 24 hours and updates this page. You can see the latest patch on the updates tracker or watch the timer widget for a small “v” badge in the corner that indicates the current sync date. If the badge is more than 7 days old, check the updates page before trusting the timer on a deep run. Past versions of the timer are archived on the wiki so you can compare coefficients across patches and decide whether to roll back your build or push forward into the new meta.