Great video and well done for not panicking.
Most of the birds appear to be juveniles, so they were probably just curious and simply being 'playful' with mock attacks.
That old bridge looks like a good nesting spot.
It certainly looked like kids only on board. Was there a 'senior' skipper running the show?
I think you must have shot it sailing past Blackrock castle on a different day, as the sun just went in on its last passage out :-(
Lovely, and you even managed to get me in shot by Blackrock castle!
For some reason my Air 3 was blocked due to being in a restricted ? zone despite my agreeing to everything, lost contact with the RC2 but returned home automatically. Scary!
Pity...