# Safety First

Nav includes critical safety features that work offline.

## MOB (Man Overboard)
The **MOB button** is always accessible in the Safety tab.
1. Tap the large **MOB** button immediately if someone falls overboard.
2. The app will record the current position and start a timer.
3. A large arrow will show the bearing and distance back to the MOB point.
4. An audible alarm will sound continuously.
5. Tap **RECOVERED** only once the person is safely back on board.

## Anchor Watch
Monitor your boat's movement while at anchor.
1. Tap the **Anchor** icon in the Safety tab.
2. Configure your watch circle radius based on your scope.
3. Tap **SET ANCHOR** to start monitoring.
4. If your boat moves outside the circle, a high-priority alarm will sound.
5. The alarm works in the background even if the screen is off.