Using Moiré Patterns to Guide Ships

I usually like Tom Scott's videos, but my main takeaway from that video is that, as far as I can tell, he did not consult a single subject matter expert(harbor pilot, captain, longshoreman, lighthouse keeper, so on) on the matter. Maybe it makes for more fun videos when you play up a mystery by only asking questions to people who you know won't know the answer, but it was a pretty pathetic research attempt on his end.

Recognized this from the Tom Scott video a month ago. If your not subscribed to him I highly recommend it. Every video he makes is interesting.

See also: Ranges and Range Lights

https://en.wikipedia.org/wiki/Leading_lights

Slightly related: Penrose tilings generate particularly fascinating Moire patterns: https://youtu.be/cvWF_Q5-Kt8

Perhaps a bit of a leap here, but I'm reminded of hyperbolic navigation [0] systems used for ships in WWII. In both cases information is derived from the combination of two different regular patterns... one just happens to be radio.

[0] https://en.wikipedia.org/wiki/Hyperbolic_navigation