The Big Cruise Day 15: Are there 10 or 11?

A transition day. Very busy meeting up with our friends and putting the first few miles (and locks) under our belts. Just remembered to grab a blip with my phone.

I can only count 10 but we're sure there were 11 when they were swimming. Can you spot another?

[Explanation: Big Cruise Blips begin on 9th April [u](where there's an introduction)[/u] and last nearly 8 weeks with a break in the middle. I am catching up with the back-blipping]