This is a clip from a photo that is not sharp but it’s distinctive and someone familiar with this bike will be able to recognize it.
It is in a display case on the upper deck of a yacht moored in Nice. I did not take this photo. The person who did said it’s a Harley but I’m fairly sure it’s not. But I can’t tell what it is.
Looks like a Harley Fat Boy.
It looks like a Harley to me, but I don’t think it’s stock. To me that looks like a Harley twin cam engine, and they may have started with either a Fat Boy or a Softail, but I think they have a custom tank on it and a custom seat/rear fender of some sort. Custom exhaust pipes, too.
With the oversized rear tire and no fender, it look more like a V-Rod but still not exactly.
Anyway, I can’t figure out how they get it down to ride it.