Going deeper is not only about reaching a number. Each depth increase should be supported by navigation, oxygen, power and a clear way home.
1. Improve breathing margin before longer dives
More oxygen or a better travel method gives you more time to explore and less pressure to rush decisions.
2. Keep the route understandable
Use markers and recognizable landmarks so deeper exploration does not become a navigation problem.
3. Check the systems that keep you moving
A depth upgrade is less useful if vehicle power, repairs or supplies become the new bottleneck.
4. Treat the first deeper trip as reconnaissance
Learn the route and hazards first, then return for focused resource collection.