We have mentioned Rubin, the Admiral's Cup racing yacht in a previous posting. She was part of the 1973 German team. Two identical sisters were built to this design by Bermester of Germany. Rubin was the first and launched in 1973 followed by Jan Potte the following year.
Here are some interesting construction images showing the cold molded hull, turning of the hull, the aluminum ring frames and leaf spring floors and the deck under construction. We are not sure if these images are of Rubin or of Jan Potte.
Here is the brochure showing the sail plan and the general arrangement. The drafting is beautiful.
Displacement 27,650 lbs
Ballast 16,000 lbs
Sail Area 1,014 sq ft