Johannsen Windmill Buyer's Guide
The Johannsen Windmill on the brokerage market is a 15-foot-6-inch one-design dinghy with a story that matters to shoppers: Clark Mills drew it in the early 1950s as a step-up from his Optimist, the adults took the class over when the kids couldn't handle it, and the fleet still races wood and glass boats together. With around 700 built over six decades and a few still coming from the molds at Tartan Yachts in Painesville, Ohio, used Windmills turn up as race-ready daysailers rather than cruisers.
Layouts on the Used Market
Every Windmill shares the same narrow, slab-sided, hard-chined hull at about 200 pounds all-up, a 14-foot-6-inch waterline, and a daggerboard that raises to roughly half a foot of draft. You will see both original plywood kit builds and later fiberglass boats, and the class rules keep them competitive, so a 1960s wooden hull and a recent glass one can sit on the same starting line. There is no cabin — this is an open planing dinghy, so "layout" means deck gear, daggerboard trunk, and rudder, not berths or galley.
Equipment and Common Upgrades
The Windmill sails without a spinnaker and carries a Snipe-like fractional rig, so the meaningful upgrades cluster around sail longevity and steering response. Later boats and refits often show a redesigned daggerboard and rudder that make the hull more responsive, and many owners run Dacron with full-length top battens and heavier cloth to stretch seasons out of the sail. A jib pole for downwind planing is standard practice rather than an option. Beyond those, buyer-consequence items are few; the boat is light enough that it does not punish gear, so elaborate power or navigation fits are neither typical nor needed.
What to Inspect
The class's protest history is remarkably clean — only two protests reached the room across more than 20 national championships two protests go to the room. For a used buy, the practical checks are the daggerboard and rudder (especially on boats with the older profile versus the redesigned responsive version), the condition of the hard-chined hull where slab sides meet the chine, and the sail's cloth and batten setup given how long a light boat lets them last. Whether wood or glass, confirm the class molds' lineage is respected so the boat stays legal with the fleet.
Availability and Buyer's Takeaway
The Windmill is a class-spread one-design rather than a regionally concentrated boat. For a buyer, the takeaway is straightforward:
- Decide wood or glass based on restoration appetite — both race legally together
- Check for the redesigned daggerboard and rudder for better responsiveness
- Inspect sail cloth and full-length top battens for remaining life
- Confirm open dinghy gear (jib pole, rig) matches the Snipe-like setup
- Join the ~90-member class early — they keep old and new competitive and welcome 70- and 80-year-old sailors in all conditions