Plan can be purchased through B&B Yacht Designs at the URL above.
17.5 lbs of lead on tip of wood (covered in glass cloth and epoxy) centerboard.
Water ballast: 190 liters = 190 kg / 420 lbs.
Ballast listed above is lead + full water tank.
Beginning with kit (hull) #20, the draft with board down is 3.93 feet or 1.20 meters.
Thanks to owner/builder David Wilkins for supplying information on this boat.
Photo courtesy Adam Hunt.

Open cockpit cat ketch day sailer with centerboard.
Same mold/tooling as HERRESHOFF AMERICA.
(Photo supplied by anonymous user and origin unknown)