Design and Origins
Paperini was a very young designer when Avallone commissioned him, and the result was a hull of 9.20 meters overall with a 3.75-meter beam and a 7.20-meter waterline. The 1.75-meter draft and 2,500 kg displacement put her squarely in the light-displacement racer tradition, while a sail area of 45.52 square meters (genoa and mainsail combined) gives a lively rig for the length. The visual kinship with the Farr 31 is not accidental — the Duck was pitched as that boat's competitor, and the borrowed transom geometry is the most obvious tell.
Construction
The hull and deck are solid fiberglass. What distinguishes the early production story is that the Duck 31 was also offered in do-it-yourself kits, meaning a buyer today may encounter owner-finished hulls whose interior joinery and systems were not put in by the yard anchor. The solid-laminate approach avoids core-related decay paths but says nothing about how carefully a kit boat was assembled.
Rig and Performance
As a Half Ton class design, the Duck 31 favors speed and balance over volume. Period reviewers noted she remains a leading boat in the Half Ton class even now, a rare distinction for a 1981 design anchor.
Accommodations
The 3.75-meter beam and 9.20-meter length suggest a compact cruiser-racer interior rather than a voluminous cruiser, consistent with the Half Ton pedigree.
The Verdict
The Duck 31 is a historically significant Half Ton racer with a clear design lineage and an active class identity. Her solid fiberglass construction and kit-built option means condition varies by who finished the boat. She rewards an owner who values racing heritage over interior space.
Pros
- Leading boat in the Half Ton class today anchor
- Solid fiberglass hull and deck
- Clear design rivalry with the Farr 31, distinctive transom
Cons
- Kit-built examples may have non-yard finishes








