Hi there! I'm sorry to hear that your Aqua Map app is crashing on your iPad Air after about 30 seconds. That sounds really frustrating! Let’s work through this together to find a solution.

Here are a few steps you can try to resolve the issue:

1. Force Close and Reopen the App:
- Swipe up from the bottom of the screen (or double-tap the home button if your iPad has one).
- Locate the Aqua Map app and swipe it up to close it completely.
- Wait a moment, then reopen the app.

2. Restart Your iPad:
- Press and hold the power button until you see the "slide to power off" slider. Slide to turn off the iPad.
- After it’s off, press and hold the power button again until you see the Apple logo.

3. Check for App Updates:
- Open the App Store and tap on your profile picture in the top-right corner.
- Scroll down to see if there are any updates available for Aqua Map. If there is, go ahead and update it.

4. Check for iOS Updates:
- Go to Settings > General > Software Update. If there’s an update available for your iOS version, install it.

5. Reinstall the App:
- If the app continues to crash, uninstall it by pressing and holding the Aqua Map icon until it jiggles, then tapping the "X" to delete it.
- Reinstall it from the App Store.

If you’ve already tried any of these steps, please let me know, and we can dive deeper into some advanced troubleshooting methods or look at potential issues like AIS data connections that might be causing the crash1.

Are you satisfied with the solution I provided so far?