

I’ve drawn these with ships numerous times. It was my usual test-pattern when calibrating magnetic compasses and testing the autopilot.
And it’s not entirely without logic either; The calibration and testing usually goes like this:
- A few circles to calibrate the compas, teaching it how the full 360 azimuth looks from a magnetic perspective, taking its own magnetic environment into account.
- Straight line, checking that the heading matches the course
- Turn 180 degrees and repeat to verify that it also holds true in the opposite direction
- At this point, you might as well draw the other testicle too




Because I haven’t mastered mitosis yet