I've made a few observations of the UP. Mainly from the surface video:
https://youtu.be/D2uiUuVWLZU
Important to notice, is that the UP has variation in the time between Honks.
In the video above, Honks come at 2:34, 5:03, 8:08 and 9:42.
Time between Honks are: 2m29s, 3m5s and 1m34s.
The UA does also have variable time between Honks, when it does the ship plot (way less variation). This is because the message has multiple 'lines'.
When Morseing body names, the interval is constant. Message has a single line.
This means that UP honk intervals are either completely random or that there is a repeating set of intervals, like the ship plot message.
If the sequence repeats, it may point to a long message. If it's random, it may suggest a less mechanized than the UA.
The Honk it self, is more complex than the UA Honk. If someone with musical knowledge took a look at the notes, it would be nice.
Colours.
Our colours?
Their colours?
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