In our club we have:

Lickalotapuss - which can only refer to beating other cats (sailed by ex Dart 18 World Champ);
Eat My Kittywake - another sailor determined to be in front!
And my favourite is Jammy Dodger for a red Dart 18 with a white waterline stripe.
Visitors have included Hullraiser and Scorched Cat.

My Spitfire was already named White Tiger (the previous owner names his boats after rare cats - appropriate in my corner of the UK). I stuck with it partly through superstition about changing boat names, and because I quite liked it. I like it a lot better now that a friend (and sailing rival) rescued a fluffy toy white tiger from his daughter's donation to the jumble. It now sits astride my spinni pole and is often the first to cross the line! (This will please Wouter - his scalps inculde various F18s and Nacra 6, all rated as faster than the Spitti, a grandfathered F16.)

To change the theme a bit, does anyone else have a mascot on board?

Simon