This is a yacht submarine. you need to fill the ballast to dive. i recommend using inf electricity because otherwise it gets quite buggy. this is my first big creation that i have made. it is still a wip tho. good luck, any questions can go in the comments.
Thanks to: Depth hold by Elemental
clock by catmandoe1
speed dial by makkii
depth monitor by stingrdr
and waypoint autopilot by hostbanani.