Design Brief & Intent
The core mission of the Wilmette 5.0 was to bridge the gap between twitchy, capsize-prone open dinghies and larger, more expensive pocket cruisers. It was targeted squarely at day-sailors who demanded structural rigidity and high safety margins without sacrificing the speed and sensory feedback of a small boat. Measuring 16.33 feet overall with a relatively wide 6.92-foot beam, the hull features a generous, open cockpit designed to accommodate a small family while keeping control lines within easy reach of a singlehanded skipper.
Unlike many competitor dayboats of the era—such as the Catalina Capri 16 or the Harpoon 5.2, which relied on centerboards—the Wilmette 5.0 is defined by its fixed fin keel drawing exactly two feet. By utilizing a high-ballast configuration on a shallow-draft fin, the builder eliminated the mechanical complexity, trunk leaks, and cockpit intrusion associated with centerboards. The fiberglass construction is robust but simple, featuring a clean gelcoat finish, a fractional sloop rig, and minimal deck hardware. Its transom-hung rudder allows for direct steering feedback and simplified maintenance.
Sailing Performance & Handling
The physical numbers behind the Wilmette 5.0 paint a picture of an exceptionally stiff, high-performance platform. Boasting a ballast-to-displacement ratio of 43.75%, with 350 pounds of lead encapsulated in its 800-pound total displacement, the boat exhibits a level of initial and secondary stability rarely seen in this size class. This significant righting moment allows the boat to carry its 130 square feet of sail area comfortably into stiffer breezes where lighter dinghies would be forced to reef or head for shore.
With a sail-area-to-displacement ratio of 24.13, the fractional sloop rig delivers aggressive acceleration and exceptional light-air performance. Under sail, this translates to immediate responsiveness to gusts and helm corrections. The boat's displacement-to-length ratio of 135.01 places it firmly in the light-displacement category, meaning that while it tracks beautifully courtesy of its fixed keel, it retains the agility to plane or semi-plane when sailing off the wind in heavy breezes.
At the helm, the 2.98 capsize screening ratio and 6.44 comfort ratio tell the true story of its handling. Owners can expect a lively, motion-rich ride that remains highly sensitive to sea states—it is an open 16-footer, meaning crews will get wet in a chop. However, the high ballast ratio ensures that the boat resists the sudden, violent capsizes common to centerboarders. Missed tacks are forgiving, and the boat settles quickly back on her lines rather than threatening to roll over.
Market Snapshot & Economics
Because Wilmette Boat Works operated as a relatively small-scale regional builder, the Wilmette 5.0 is a scarce find on the brokerage market today. The boat rarely changes hands, and when examples do emerge, they generally trade at a stable value, appealing to collectors of unique, vintage pocket-keelboats and sailors seeking a low-maintenance, high-stability alternative to modern rotomolded daysailers.
The economics of owning a Wilmette 5.0 are highly favorable, largely because the boat lacks complex inboard machinery or plumbing. The primary financial considerations for buyers are the condition of the trailer, the age of the sail inventory, and the structural integrity of the transom-hung rudder and gudgeons. Re-rigging the simple fractional mast is an inexpensive weekend project, and because the keel is encapsulated and fixed, there are no swing-keel cables or pivot bolts to fail or service.
The Verdict
The Wilmette 5.0 stands as an impressive, albeit rare, testament to early-1980s pocket-keelboat engineering. By combining the trailering ease of a dinghy with the ballast security of a much larger yacht, Terry Lamb created a stable, high-performance day-sailer that remains exceptionally rewarding to sail. While its small production run makes sourcing parts or finding sisterships difficult, its simple, over-built construction ensures that surviving examples remain highly viable for modern sailors who prioritize stiffness and simplicity on the water.
Pros:
- Outstanding stability and stiffness due to a 43.75% ballast-to-displacement ratio.
- Responsive, high-performance fractional rig that excels in both light air and heavy gusts.
- Fixed, shallow 2-foot draft offers excellent tracking without the complexity of a centerboard trunk.
- Low-maintenance fiberglass construction with no complex mechanical systems to service.
- Direct, highly communicative steering via a simple transom-hung rudder.
Cons:
- High scarcity makes finding a used model or matching original parts highly challenging.
- Low comfort ratio results in a wet, lively ride in choppy conditions.
- Lacks the cabin amenities or dry storage found in heavier pocket cruisers of a similar length.
- Trailer launching requires slightly deeper ramps compared to flat-bottomed swing-keel boats.
