Van de Stadt design #143.
AKA CLIPPER 69 and later KLIPPER.
KLIPPER has an extended stern. LOA reported as 8.85m
Photo from KLIPPER brochure ca. 1972.
Sail plan and hull drawing is VDS CLIPPER dated 1964.
Interior drawing is from VDS plan for KLIPPER dated 1970.
Thanks to ‘Christopher’ for supplying information.

Specs above are from Bristow’s Book of Yachts, Sail & Power, 22nd edition, 1991

Shallow keel draft: 5.92 ft

Originally the HYLAS 56, Bluewater Yachts purchased the molds and renamed the boat.
Keel/CB BU: 6.33′ BD: 10.0′
Reported sail area = main + 135% genoa.

TC = Twin cockpit
Shoal draft keel: 6.5 ft / 1.98m

TC = Twin cockpit
Shoal draft keel: 6.5 ft / 1.98m

Available with aft or center cockpit.
Shoal draft keel: 5.58 ft / 1.7m
Reported sail area = main + 130% genoa.
Main: 529 sqft.
130% genoa: 704 sqft.
Working jib: 445 sqft.

Also available with a cutter rig.

Rig measurement for Solent #2 headsail:
I – 27.294m / 89.55ft
J – 7.56m / 24.8ft