Design Brief & Intent
The core ambition of the Flying Saucer was to achieve effortless, high-speed planing in moderate winds without requiring the complex rigging and physical strain of contemporary high-performance classes. Kostanecki’s design incorporated a distinctive "gull wing" hull form featuring a heavily flared topside and a remarkably narrow, low-wetted-surface running surface. This shape was intended to keep the boat dry while enabling it to rise onto a plane in breezes as light as 10 to 12 knots. To make this performance accessible, the boat featured a self-tending jib that tacked automatically on a single setting, leaving the single-handed helmsman free to manage only the mainsail and steering.
A major tension exists between the designer's intent and O'Day’s industrial execution. Kostanecki’s original prototype, constructed with foam and fiberglass, weighed an incredibly light 150 pounds. At this weight, the boat was a highly responsive, modern rocket ship. However, O'Day’s production line utilized conventional, heavy-handed chopper-gun spray-up and thick woven glass. This industrial manufacturing process yielded a hull that was significantly heavier than designed. While official brochures claimed a displacement of 195 pounds, the designer noted that production models often left the factory weighing much more, which dulled the boat's light-air performance. Nevertheless, the deck layout was clean, offering a self-draining cockpit and foam-packed positive flotation, signaling a clear intent for safe, beach-launchable adventure.
Sailing Performance & Handling
The physical handling of the Flying Saucer is characterized by its lively and highly tender nature. This behavior is mathematically anticipated by its design ratios. With a displacement-to-length (D/L) ratio of 39.62, the hull sits firmly in the ultra-lightweight planing category, reacting instantly to every puff and crew movement. Its colossal sail area-to-displacement (SA/D) ratio of 54.72 highlights an incredibly high-powered sail-carrying capability relative to its weight, which demands active, athletic crew weight management to keep the hull flat.
At the helm, the boat delivers direct feedback. Lacking any ballast, the boat relies entirely on its 5.18-foot beam and the crew’s leverage on the hiking straps to generate righting moment. The capsize screening ratio of 3.57 and a comfort ratio of 2.47 indicate a tender, highly motion-sensitive dinghy that is easily capsized if the helmsperson is inattentive. However, because the cockpit is self-draining and packed with flotation foam, righting the boat after a capsize is a straightforward affair, allowing sailors to push the envelope without fearing a swamped vessel. The "bendy rig" mast was designed to flex dynamically under gusts, automatically spilling excess power from the head of the high-aspect mainsail and flattening the sail shape to make the boat more manageable in high winds.
Variations & Configurations
Throughout its four-year production run, the Flying Saucer was offered in a single, standardized configuration to keep manufacturing costs low and ensure one-design consistency. It was rigged as a fractional sloop utilizing a high-aspect main and a small, self-tending jib. Underneath, the boat employed a swing-style fiberglass centerboard rather than a daggerboard, allowing the draft to be adjusted from a shallow 6 inches with the board retracted to 3.25 feet with the board fully lowered. This pivot-style centerboard made the boat significantly more forgiving during accidental groundings or when sailing directly off sandy beaches. The rudder assembly featured a kick-up blade to match this shallow-water capability.
Known Issues & Triage
The most critical issue facing modern owners of the Flying Saucer is water absorption within the hull’s positive flotation chambers. O’Day packed the hull cavities with expanded polystyrene foam to meet positive flotation safety standards. Over many decades, cracks in the cockpit sole, centerboard trunk, or hull-to-deck joint allow water to seep into these compartments, waterlogging the foam. This waterlogging can easily double the boat's physical weight, completely ruining its planing capability, making it impossible to car-top, and causing structural rot from the inside out. Owners must inspect any prospect by weighing the boat hull bare; a waterlogged hull will require cutting access ports, digging out the saturated foam, and replacing it with modern closed-cell polyurethane foam or air bags.
Another known weak point is structural flexing. Because the hull was built using a flexible polyester resin and chopper-strand glass, the high-tension loads of the mast step and the centerboard trunk often cause gelcoat crazing and structural cracking. The "bendy rig" places significant dynamic leverage on the mast partner at the deck level. Veteran owners often need to reinforce the underside of the deck mast partner with additional fiberglass roving or a custom support strut tied into the hull structure to prevent the deck from flexing and eventually cracking under high sail loads.
The Verdict
The O’Day Flying Saucer is a fascinating, forward-looking artifact of late-1960s sailing design that prioritized planing speeds and simple, hands-free jib handling. While it never achieved the commercial success of the Laser or the Sunfish due to O’Day’s heavy production layups, it remains an incredibly fun, cheap, and responsive daysailer for those who enjoy restoring vintage fiberglass.
Pros
- The self-tending jib allows for easy, hands-free tacking and seamless single-handed sailing.
- The hull planes readily in moderate breezes once the crew masters the active use of the hiking straps.
- The kick-up centerboard and rudder make it an excellent choice for beach launching and shallow-water exploring.
- Dynamic "bendy rig" automatically depowers the sail plan in heavy gusts, easing control for less experienced helmsmsmen.
- Self-draining cockpit and positive flotation ensure the boat is easy to right and dry out after a capsize.
Cons
- Production models are significantly heavier than the designer's original 150-pound prototype, limiting ultimate light-air performance.
- Internal flotation foam is highly prone to absorbing water over time, requiring labor-intensive excavation and replacement.
- The high-aspect, unstayed mast setup places immense structural stress on the deck partner, leading to flexing and structural cracks.
- Extremely scarce parts availability requires owners to custom-fabricate rigging components, rudders, and sails.
