Depth in editor is always in feets.
Changing course/depth/speed by script should work.
AI could change it when engaging so it's important to make AI sub autonomous lowes as possible. You can do it by:
- selecting ROE = peace for Akula side (better is to make Akula neutral
- selecting "transit" tactic
Btw im not sure but active pinging could be readed as assumed hostile action. In RA AI submarines usually makes counter pings and attack - so make sure ROE = peace
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