Det gäller att fråga för att få svar;
The Vertical dipole array consists of two dipoles that are bent in a slight Vee shape (just like the irector and Reflector of the Spiderbeam Yagi).
Such vertical dipoles work very well near the sea (or actually "in the sea" in the case of VP6DX..) The design was mainly done by DL6LAU and DJ2YA, with a few side comments by DF4SA
After the expedition we will hopefully publish more about the antennas, but in short descripton it is really only a driven element and a reflector, both of them bent a little bit..
I hope it wasn't a secret!