短い答え
Do not push deeper just because you reached an entrance once. Use environmental oxygen, carry Air Bladders, build the Standard Air Tank when Silver allows it, and leave when low O2 appears with another problem: bad landmarks, hostile pressure, an unmapped cave, or a scan that forces you to stop.
深く潜る前の判断
Check the return before the reward
Before chasing a scan, wreck, or rare material, ask how you will get home. If the plan only works perfectly, it is not ready.
Use temporary oxygen while scouting
Oxygen Tunics, Bloom Sap funnels, air pockets, and Air Bladders are scouting tools before a longer route.
Upgrade when Silver allows it
Standard Air Tank makes cave and scan routes feel far less brittle.
Leave extra O2 for scans
Scanner and Bioscanner routes make you stop moving, so turn back earlier than you would on a simple material run.
Dive decision card
Green
Repeat
known route, spare oxygen.
Yellow
Scout
one unknown, clear return.
Red
Leave
low O2 plus bad visibility.
Depth readiness checks
| Question | Safe answer |
|---|---|
| Can I describe the way back? | Yes, with a start landmark, midpoint cue, and return cue. |
| Do I have backup oxygen? | Carry an Air Bladder or know the next oxygen reset. |
| Is this a cave or wreck? | Leave earlier than in open water. |
| Is my inventory nearly full? | Go home first; full bags make deep routes worse. |
| Will I need to scan? | Leave more O2 than usual because scanning locks you in place. |
深追いより早めの帰還
安全に戻って一つメモを残すほうが、迷って何も覚えていない長い泳ぎより役に立ちます。
FAQ
いつ深く潜れる？
oxygen、route、backup air、明確な目的が揃った時です。
酸素が足りない時は？
route を短くし、environmental oxygen、Air Bladder、Standard Air Tank を使います。
Standard Air Tank は優先？
Silver などが揃ったら優先する価値があります。
深い resource は無理して取る？
基本は戻ってから再挑戦します。