Multi-Level Dives
Multi-level dive planning lets you build dive profiles with multiple depth stages, each with its own depth, duration, and gas assignment. This is ideal for dives that move through different depth zones -- for example, starting on a deep wreck, moving to a reef wall, and finishing with a shallow safety stop.
Enabling multi-level mode
Above the depth and time inputs, you'll find a toggle button to switch between single-level and multi-level mode. Click it to enter multi-level planning.
When multi-level mode is active, the single depth/time fields are replaced by a list of depth levels that you can add, remove, and reorder.
Adding depth levels
Click Add Level to add a new depth level to your plan. Each level has three fields:
| Field | Description |
|---|---|
| Depth | The target depth for this level (m or ft) |
| Duration | Time spent at this depth in minutes |
| Gas | Which configured tank to breathe at this level |
Levels execute in order from top to bottom. The planner calculates the transitions between levels -- including any ascent or descent time between them -- automatically.
Each level can use a different gas if you have multiple tanks configured. This lets you plan dives where you switch from a bottom mix to a travel mix between levels. See Tank Configuration for details on setting up multiple tanks.
Example: a three-level reef dive
A typical multi-level profile might look like this:
- Level 1 -- 30 m for 15 minutes (deep section of the reef, using trimix bottom gas)
- Level 2 -- 18 m for 10 minutes (mid-depth wall, switching to EAN32)
- Level 3 -- 5 m for 3 minutes (safety stop on the same EAN32)
The planner treats each level as a segment of the overall profile and computes decompression obligations, gas consumption, and runtime across all levels combined.
Multi-level mode with 2-3 levels configured showing depth, duration, and gas assignment for each -- planner-multilevel-light.png / planner-multilevel-dark.png
Tips for multi-level planning
- Order matters. Levels are executed sequentially. Place the deepest level first and work your way up for a standard multi-level profile.
- Gas switches between levels. If a level uses a different gas than the previous one, the planner accounts for the gas switch time defined in your diver profile settings.
- Deco calculations span all levels. Decompression obligations are computed for the full profile, not per-level. A long shallow level after a deep one can off-gas nitrogen and reduce or eliminate deco stops.
- Remove or reorder levels by using the controls next to each level row.