John,
It is a Blade.
I posted it because I like the look of the square top.
It is along the lines of what they are using on the F18s
and the later A class sails.
In my opinion the larger square top makes for quite a good looking sail plan.

Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!