Seeing as though at the beginning it says Starboard Windsurfing that takes up over half the screen and again at the end like you said it says Starboard and every single shot shows a guy sailing a Starboard and if you couldn't see the board there was a big Starboard symbol on the sail then i think there's a pretty fair chance that one should get the idea that maybe it's about Starboard Windsurfing boards. Maybe it's just me but that's what i got from the video when i watched it