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The Tiny Submarine

I tried to make an all mission capable submarine that was as small as possible, but with minimal downscaling and overlapping. I also changed as few values as possible from default. The only value changes were for the engine, whose force was decreased, and the pump, whose flow was increased. The power consumptions were adjusted accordingly.

Speaking of power, make sure you manage it well. You can only recharge at a station. If the batteries run dry, its mission over. I recommend keeping the supercapacitor minimally charged, and use manual steering as the autopilot is not very energy efficient.

The pulse laser wiring I did for fun. Turn them on at the nav terminal, indicator lights above the periscope show the currently active laser. I recommend turning them off when not in use both because of the loud noise and because the timing slowly worsens the longer they stay on. If they ever stop working properly, just turn them off and back on.
The pulse laser can be activated by double clicking while they're offline, and the gunner can switch the active weapon by aiming at 3 or 9 o clock for a moment. Works most of the time!

This submarine is not compatible with AI. Even with proper waypoints, they prefer Europa's oceans to staying inside.