Glass Onion Information, Review, Specs

Sailing Performance & Handling

The Glass Onion is characterized by a fractional sloop rig that is both highly adjustable and demanding. As a purpose-built racer, it features a fin keel and a spade rudder, a combination that provides exceptional agility and a tight turning circle. Technical data indicates a displacement of approximately 2,976 lbs (1,350 kg) with nearly 1,000 lbs of lead ballast, giving the boat a ballast-to-displacement ratio of roughly 33%. In practice, this makes for a stiff and responsive hull that excels in light-to-moderate air, though its performance in heavy weather requires active management of the running backstays.

Historically, the model is celebrated for its victory in the 1982 Round the Island Race, where the original Glass Onion, helmed by Julia Dane, won the prestigious Gold Roman Bowl. This achievement cemented the boat's reputation as a "giant killer," capable of outpacing significantly larger yachts by exploiting its favorable IOR rating and long effective sailing length. Owners often describe the handling as "surgical," noting that while the boat is light enough to feel like a dinghy, its hull form—which includes a distinctive stern "scoop" on some variants—allows it to track with surprising stability when reaching.

Interior Comfort & Variations

Consistent with its roots as a Tonner-class racer, the interior of the Glass Onion is unapologetically spartan. The original racing models were often delivered "stripped," featuring tubular alloy pipe cots instead of traditional built-in berths to save weight. There is no standing headroom; the cabin is primarily a space for sail storage and sheltered navigation rather than extended cruising.

However, the production siblings built by Evolution Yachts (and later by builders like Eric Reynolds) offered more civilized variations. These models, often marketed as the Evolution 22, introduced a more conventional layout with four berths, a small galley, and occasionally a chemical toilet. Despite these additions, the "Glass Onion" heritage remains evident in the narrow beam and the dominance of the mast and rig controls within the living space. The use of tinted acrylic for the companionway and portlights was a signature aesthetic choice for the era, designed to maintain the "Glass Onion" look.

Popular Mentions & Media

The boat’s cultural footprint is inextricably linked to the Round the Island Race history. Technical articles and retrospectives by Julian Everitt frequently cite the boat as a pinnacle of Mini Tonner design, highlighting how it used a "crease" in the stern to trick the IOR measurement points. While the name has gained modern fame through film, the nautical "Glass Onion" remains a cult classic among IOR enthusiasts and is frequently discussed in forums dedicated to vintage racing yachts as a prime example of late-1970s design philosophy.

Known Issues & Buyer’s Checklist

Prospective buyers of a Glass Onion or an early Evolution 22 should focus on the following technical areas:

• Hull Stiffness: Because these boats were built light for racing, aging hulls may exhibit signs of "softness" or flexing. Inspect the high-stress areas around the mast step and chainplates for spider-cracking in the gelcoat.
• Rigging Complexity: The fractional rig with running backstays is complex. Buyers should verify that all blocks and winches are in good working order, as the boat cannot be safely sailed under full main without proper backstay tension.
• Rudder Bearings: The spade rudder is known to develop play over decades of use. Check for "slop" in the rudder post and inspect the internal reinforcement of the transom where the rudder tube is bonded.
• Deck Core: Standard for GRP boats of this vintage, the balsa-cored decks are susceptible to moisture ingress around deck hardware. Use a moisture meter or perform a percussion "tap test" around the winches and cleats.

Community & Resources

The legacy of the Glass Onion is maintained by the Mini Tonner Class Association and the broader IOR racing community in the UK and Europe. Technical insights and historical records are often archived by the Island Sailing Club, which oversees the Round the Island Race where the boat famously made its mark.

The Verdict

The Glass Onion is a specialist’s boat—a high-strung, rewarding racer that offers a pure connection to the water at the expense of creature comforts.

Pros:

• Exceptional light-air performance and race-winning pedigree.
• Agile and responsive handling typical of Julian Everitt designs.
• Low entry cost for a boat with significant historical importance.

Cons:

• Spartan interior with minimal amenities for cruising.
• Complex rig requires an experienced crew to sail effectively.
• Lightweight construction necessitates careful inspection for structural fatigue.