It is possible that it has the ability to determine things like which tack another sailing vessel is on (which it will need if it is sailpowered) as well as identifying things like day shapes, light patterns and sound signals and adjusting its behaviour accordingly. I am a little doubtful though. Similar projects seem to rely on AIS for collision prevention, which will mean that it can't 'see' any recreational vessels who lack AIS type A.

Looking at that tiny wing sail, it’s gonna be sloowwww. Maybe that’ll help?