Bolger Pivoquor - What's that?

At the Duck Flat Wooden Boats - Plans - webpage
http://www.duckflatwoodenboats.com/mainpages/kPlans.php?
PHPSESSID=22c8a800b71f37783dd9da353877bd45
listed near the bottom is a Bolger Pivoquor @ AUD $165.00.

WHAT design is a "Pivoquor"? I've not heard of it; though I note also
listed is a Martha "Jump" that I have not heard of! I hope it's a
trimaran - kinda named after Piver.

http://www.duckflatwoodenboats.com/index.php

Graeme