I found another one for sale with a few more dimensions:http://www.leboatshop.com/uk/consult2.php?ID_article=158
BENETEAU CALIFORNIA 470
This pretty boat has been renovated by The Boat Shop in 2008.
The hull is painted red, and there are new wooden gunwhales, wooden seats in the cockpit, new wooden washboards and hand rails.
Length 4.70m and beam 2.12m
Main and jib in good condition.
The forward cabin has 2 berths.
There are also new tinted pexiglass windows.
A VOIR ! A GOOD BUY.
And this site seems to indicate they were built from 1983 to 1986:http://www.argus-marine.com/argus-beneteau-california470-45-3597-categorie.html
Another site seems to indicate the draft is more likely 0.45 which seems to agree with the photos:http://sailingregate.fr/fr/fiche-bateau-cat_fic_voile_habitable/beneteau-california-470,806.html