The Schedule view is the plan you dive from: one row per segment, in the order they happen. It is one table at three column densities, chosen with the control above it, each shaped for a different moment.
- Basic: Phase, Depth, Time, Runtime, Gas, ppO₂. The plan read at a desk — calm, and enough to check a segment against your plan.
- Advanced: the same, plus the inspired partial pressures and fractions of O₂, N₂ and He, gas density, END, Ceiling, CNS and OTU. It scrolls sideways with Depth pinned. The set that shows its working.
- Slate: Depth, Time, Runtime, Gas, and a circuit-conditional column — Setpoint on a closed-circuit segment, Waypoint / Turn on an open-circuit one, both on a bailout schedule. Bare numerals with the unit in the heading, as you would copy it onto a wrist slate, and only the rows you would actually write down: levels and stops. Descents, ascents and switches are left off.
A gas, diluent or setpoint switch is its own row in Advanced, which makes a switch depth checkable rather than inferred. Basic and Slate both fold a switch into the segment around it, for a calmer read.
| Depthmetres | Phase | Timeminutes | Runtimeminutes | Gas | ppO₂bar | ppN₂bar | ppHebar | fO₂% | fN₂% | fHe% | Densityg/L | ENDmetres | Ceilingmetres | CNS% | OTU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Surface | Surface | — | 0 | OC 21/35 | — | — | — | — | — | — | — | — | — | 0 | 0 |
45 | Descent | 3 | 3 | OC 21/35 | 1.11 | 2.41 | 1.92 | 21 | 44 | 35 | 5.06 | 21 | — | 0 | 1 |
45 | Level | 25 | 28 | OC 21/35 | 1.16 | 2.41 | 1.92 | 21 | 44 | 35 | 5.06 | 21 | 20 | 12 | 33 |
21 | Ascent | 3 | 30 | OC 21/35 | 0.69 | 1.35 | 1.07 | 21 | 44 | 35 | 2.85 | 7 | 18 | 12 | 35 |
21 | Gas switch | — | 31 | OC 50% | 1.56 | 1.53 | 0.00 | 50 | 50 | 0 | 4.19 | 10 | 17 | 14 | 37 |
21 | Stop | 1 | 32 | OC 50% | 1.56 | 1.53 | 0.00 | 50 | 50 | 0 | 4.19 | 10 | 15 | 16 | 39 |
12 | Ascent | 3 | 35 | OC 50% | 1.19 | 1.08 | 0.00 | 50 | 50 | 0 | 2.97 | 4 | 10 | 18 | 43 |
12 | Stop | 2 | 37 | OC 50% | 1.11 | 1.08 | 0.00 | 50 | 50 | 0 | 2.97 | 4 | 9 | 19 | 46 |
9 | Ascent | 1 | 38 | OC 50% | 1.03 | 0.93 | 0.00 | 50 | 50 | 0 | 2.57 | 2 | 8 | 19 | 47 |
9 | Stop | 3 | 41 | OC 50% | 0.96 | 0.93 | 0.00 | 50 | 50 | 0 | 2.57 | 2 | 7 | 20 | 49 |
6 | Ascent | 1 | 42 | OC 50% | 0.88 | 0.78 | 0.00 | 50 | 50 | 0 | 2.17 | 0 | 6 | 20 | 50 |
6 | Stop | 24 | 66 | OC 50% | 0.81 | 0.78 | 0.00 | 50 | 50 | 0 | 2.17 | 0 | 1 | 26 | 66 |
0 | Ascent | 6 | 72 | OC 50% | 0.66 | 0.48 | 0.00 | 50 | 50 | 0 | 1.36 | 0 | — | 27 | 69 |
The columns
- Runtime is elapsed time since the start of the dive; Time is the length of that one segment. Reading a schedule off the wrong one of those two is the most common transcription error there is, so the two sit side by side.
- ppO₂ is the oxygen partial pressure on that segment, in bar. It is how you catch a gas being breathed a little too deep.
- Ceiling is the shallowest depth the model permitted at that moment. On a stop row it equals the depth; on an ascent row the gap is your margin.
- Phase names the row: Descent, Level, Stop, Ascent, Gas switch or Setpoint switch. Not shown on the Slate density — the slate only ever carries level and stop rows, so the column would name the same thing every time.
Setpoint and Waypoint / Turn, on the slate
The slate’s last column changes with the segment’s circuit. On a closed-circuit
level or stop it shows Setpoint, the ppO₂ you dialled in. On an open-circuit
one it shows Waypoint / Turn: what is left in the back gas leaving that
level, and the turn pressure it is measured against, written as one figure over
the other. A level reads Below turn — a caution, not an error, marked with
a TURN tag beside the figures — when it was left past that pressure. It needs
a tank size and a working pressure on the back gas; levels without them show no
figure at all. On a bailout schedule the loop segments show Setpoint and the
open-circuit segments after the bail point show Waypoint / Turn, in the same
column. See gas consumption for the fuller per-cylinder
figures this column is drawn from.
A row the planner objects to carries a marker you can select to read the warning attached to that moment. The same messages are gathered in the warnings chip. The card’s Fullscreen control opens the same table over the whole window, at the same density.
On a rebreather
The densities and columns are identical; what changes is how many tables there are. With the loop selected, the loop’s full schedule comes first, then one block per selected scenario carrying the segments from its bail point onward, under a header naming the bail time and the scenario’s TTS. Turn the loop off and a scenario on its own gives one table covering its whole dive, shared loop phase included. Any counterdiffusion objection from a scenario’s bailout switch is printed above its table. See Bailout scenarios.
Next
The gas consumption view: what that schedule costs in each cylinder, and where it runs out.