The original XoZ was developed in the 1980´s and campaigned on the European Formula 28 circuit by Per Ferskaug.

The original XOZ is currently (2007) owned by Marström in Sweden who have used it as a test bed for the Seacart 30 rig.

http://www.oceanlakemarine.com/img/pagePics/v51_sailtest_big.jpg

A sister ship and further development of the original XOZ was built and called MIRAGE.

http://seglingsbilder.se/ has some pictures of both Mirage and XOZ use the search phrases Mirage, XOZ and formula 28