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Iditarod Mk2

WARNING: MUST BE SPAWNED VIA MISSION OR MODDED WORKBENCH
(Why isn't it uploaded as a mission? Stormworks is CTDing every time I try. Dunnolal.)

The Iditarod Mk2, an irresponsibly-sized diesel-electric cruise submarine. Comfy. Huge. Heavily featured. Totally useless.

Key features:
-Excessively large, inside and out
-Full interior
-Depth, heading, and ballast keeping plus large associated displays featuring configurable units and modes of operation.
-Animated weather center and map table
-Obligatory periscope
-Manual control options (though I use pretty much exclusively the holds, myself)
-Full RGB lighting configurable on a per-room basis (defaults to a nice warm color)
-Automatic diesel generator management (just set it to auto and do whatever. It'll run on the surface and top off the battery)
-Thorough bilge routing, in case you want to throw torpedoes at it or get it eaten by a shark.
-Port and starboard diving airlocks with security interlocks to discourage accidentally self-flooding. Flood from reservoir so they can operate quickly at depth (Probably the only useful thing if you're crazy enough to do missions with this thing)
-3D lidar "Sonar"
-Bow and conning tower C&C options, with control hand-off consoles

Specs:
Top Speed - 14 knots submerged
Range - 50-60 kilometers submerged. Diesel-electric fuel range untested but it should be a big number.
Berthing - 16+ Passengers and 15 crew

Room List (Dorsal-to-Ventral, Bow-to-Stern):
-Conning tower/entry
-Dorsal-forward storage and elevator
-Atrium
-Dorsal Lounge
-2x Master suite
-Crew galley
-Bow Con
-Weather and Navigation
- 4x Primary passenger cabins
- 2x Secondary passenger cabins
- Infirmary and Chief Engineer's quarters
- Passenger Galley
- Library
- Engineering section utilities
- Dive airlocks
- 2x service crew quarters
- Main engineering
- Forward maintenance compartments (mostly for if your bilge pumps get damaged)
- Ventral lounge
- 2x Engineering supply lockers
- 4x ventral crew quarters

OPERATION MANUAL:
Neutral buoyancy ballast - 56% with full fuel

Dive procedure - Select 55-57% ballast from the ballast keypad. The indicator light will turn red to indicate the pumps are working, and will gradually turn green as the requested ballast percent is approached. Then engage diving planes manually or automatically to reach the desired depth.

Surface procedure - Select 0% ballast from the keypad. Removing ballast water is very slow or impossible at depth, so surface with the planes. Pre-selecting ballast empty will allow you to be positively buoyant by the time you break the surface. The diesel generator, if turned on, will begin operating as its intake clears the water and it becomes able to.

Command and Control - Stabilized manual controls are provided on WASD in command seats, but this is a very large submarine and nothing will be happening quickly. Use of the clickable heading selection screen and keypad depth select is recommended.

Autopilot - Heading hold is marked "HH" on the horizontal situation indicator. Once enabled, a target heading can be bugged on the indicator by touch. The "REF" button allows the HSI to be shifted in and out of fixed-card mode depending on preference. This does not interfere with selected headings. Depth hold is enabled from the top left of the vertical situation display, with depth targeting available on keypad to the right. Unit selection (imperial or metric) accomplished by tapping the currently selected unit box. Important: Depth hold is in terms of selected units. Changing unit type while holding a depth will cause your original selection to be targeted in the new unit type. (I.E. a command to 100 feet will become a command to 100 meters). Target depth is marked as a green line on the VSD. Gray lines mark regular depth intervals, and a red line marks the keel depth.

Notes:
-Technically not completely polished in every corner, but this project has long-since developed into a golden-gate-bridge-situation that I doubt will ever be truly completed. I'll update it periodically with additional details and features as I add them, but everything major and the vast majority of everything minor is here.
-You are welcome to recycle any of the plethora of microcontrollers here for your own use, though I would appreciate an acknowledgement if you use one. I'd be especially interested to see any improvements anyone manages to make on that 3D lidar. I have a feeling there's plenty of upward potential there, but I'm pretty tapped out of ingenuity. The bow of this submarine by itself is available as another item for experimentation with that, with an additional one coming for the fully-isolated lidar system.