Design Brief & Intent
The Idea 11 was conceived for sailors who demanded genuine racing pedigree without sacrificing the structural integrity and bespoke joinery of a traditional shipyard. In an era when competitors like Comar with the Comet series or Grand Soleil focused on standardized, aft-cockpit cruising layouts, Alaver positioned the Idea 11 as an avant-garde alternative. The yacht was engineered to be exceptionally stiff and fast, capable of competing in demanding Mediterranean offshore events, a capability proven when the model secured a second-place class finish in the grueling, double-handed 500x2 (Cinquecento per due) race in the Adriatic.
Crucial to the boat's character is the division of labor between its creators. While Kaufman shaped the hydrodynamic surfaces for maximum efficiency, Sigovich oversaw the construction and interior fit-out. Rather than relying on the lightweight, modular fiberglass liners typical of mass-market builders, Alaver utilized solid hardwoods, marine-grade plywood, and traditional joinery. The structural bulkheads were thoroughly glassed directly to the hull, creating a highly rigid, monocoque structure that did not flex under high rig loads. This focus on structural integrity produced an interior that was both structurally sound and warm, reflecting the high craftsmanship of Sigovich's heritage.
Variations & Configurations
The Idea 11 was built as a masthead sloop rigged with a fixed, deep fin keel and a spade rudder. It features a length overall of 36.09 feet, a beam of 11.65 feet, and a deep draft of 6.25 feet. The deck and interior layout are characterized by a highly distinctive design philosophy centered around a deep middle cockpit. This deep central cockpit splits the deck, providing an incredibly secure, well-protected working area for the helmsman and crew at sea, while also creating a natural division below deck.
Access to the interior is split into two distinct companionways. The primary companionway leads forward into the main living quarters, while a secondary companionway leads directly into an expansive, dedicated aft cabin. Unlike the cramped, cave-like quarter-berths found in contemporary 36-footers, the Idea 11’s aft cabin is a spacious stateroom. It houses two long settee berths flanking a central table, which can be converted for overnight use into three berths, including a double.
The main salon, or quadrato, lies forward of the cockpit and is accessed via the primary companionway. The starboard side is configured with stacked bunk berths, while the port side houses a highly functional galley and a fully enclosed head. The interior accommodation terminates in a classic V-berth cabin at the bow. This unique layout layout ensures that nearly all berths are positioned close to the yacht's center of buoyancy, providing optimal sea berths for off-watch crew during long-distance offshore passages.
Sailing Performance & Handling
On the water, the Idea 11 displays a lively, athletic temperament that reveals its racing DNA. With a displacement of 10,585 pounds, the vessel carries a light-displacement designation for its era, as highlighted by its displacement-to-length ratio of 175.02. This light displacement, combined with a potent sail area-to-displacement ratio of 25.88, gives the yacht exceptional horsepower-to-weight performance. It accelerates rapidly in light air, out-tacking heavier cruising designs and maintaining momentum through chop where other vessels of its size stall.
The boat’s defining performance characteristic, however, is its extraordinary stiffness. With a ballast-to-displacement ratio of 50.02%, more than half of the yacht's total weight is concentrated in its 5,295-pound fin keel. This creates a massive righting moment that allows the Idea 11 to stand up to its canvas in heavy weather, pointing exceptionally high and resisting heeling long after other crews have been forced to reef.
This high level of performance does come with trade-offs. The yacht's capsize screening ratio of 2.12 reflects the wide-beam, high-form-stability design parameters of the late-1970s IOR rule. While the hull is highly stable initially, this ratio suggests a narrower range of ultimate offshore stability compared to modern, deep-keeled ocean voyagers. Additionally, the comfort ratio of 19.53 confirms that the boat has a quick, active motion in a seaway. In a head sea, the lightweight hull will transmit the energy of the waves directly to the crew. While the helmsman will enjoy immediate, tactile feedback and a highly responsive rudder, the motion can become fatiguing over long passages in rough conditions.
Market Snapshot & Economics
Today, the Alaver Idea 11 is a rare find on the brokerage market, with the vast majority of surviving hulls located in the Northern Adriatic, Italian lakes, and wider Mediterranean. It commands a niche following among connoisseurs of classic Italian yacht design and vintage racer-cruisers. Because of the limited production run and semi-custom nature of the shipyard, prices are highly dependent on the historical maintenance of individual hulls rather than standard market averages.
Acquiring an Idea 11 requires a realistic economic assessment of refit requirements. Given that production commenced in 1979 and continued through the mid-1980s, original systems are likely to require renewal. Prospective owners should budget for upgrading original standing rigging, updating deck hardware, and inspecting the inboard diesel engines. These yachts were typically fitted with 20 to 35 horsepower diesel engines mated to sail-drive units. While the initial purchase price of an Idea 11 often represents an excellent value for a hand-crafted 36-foot yacht, the cost of modernizing sails, electronics, and mechanical systems will quickly equal or exceed the vessel's market value. However, the inherent quality of the underlying hull layup and Sigovich's structural woodwork make the boat an excellent candidate for a dedicated restoration.
Known Issues & Triage
Potential buyers should enlist a marine surveyor experienced in vintage European composite construction to investigate several known areas of concern:
- Keel Bolt Crevice Corrosion: The lead-and-iron keel is secured to the hull bilge via threaded studs. Over time, water seeping into the keel-hull joint can cause crevice corrosion of these studs. Replacing these bolts is highly recommended if they are original, a task that can be complicated and costly due to restricted bilge access.
- Deck Core Moisture: The fiberglass deck utilizes a balsa or marine plywood core for stiffness. Years of exposure can lead to water intrusion around older deck penetrations, particularly the chainplates, stanchions, and companionway slides. A thorough moisture meter test and percussion hammer sounding are essential to detect soft spots or delamination.
- Sail-Drive Diaphragm: The original sail-drive units rely on a flexible rubber hull seal. Manufacturers recommend replacing this rubber diaphragm every seven to ten years. If the history of this seal is undocumented, it should be replaced immediately as a preventative safety measure.
The Verdict
The Alaver Idea 11 is an exceptional choice for the classic sailing enthusiast who prioritizes speed, responsive handling, and hand-crafted woodwork over modern, condo-style interior volume. It is a true sailor’s boat, offering an engaging helm experience, superb light-air performance, and a unique, secure central cockpit layout. While its quick motion in a seaway and rare parts support make it less suited for casual coastal cruisers or long-term blue-water passagemakers, it remains a highly rewarding vessel for those who appreciate the marriage of Scott Kaufman’s design genius and traditional Italian craftsmanship.
- Pros
- Superb light-air performance and acceleration due to a high sail area-to-displacement ratio.
- Outstanding stiffness and resistance to heeling, courtesy of a massive 50.02% ballast ratio.
- High-quality interior joinery and robust structural bulkheads hand-crafted by Alaver.
- Secure, deep central cockpit and an innovative, highly accommodating aft stateroom.
- Highly tactile and responsive steering that appeals to passionate helmsmen.
- Cons
- Low comfort ratio of 19.53 results in a lively, potentially fatiguing motion in choppy seas.
- Rare, highly localized model with limited availability and a lack of standardized owner support groups.
- High capsize screening ratio limits suitability for modern, extreme offshore safety ratings.
- Age-related maintenance items, including sail-drive seals and keel studs, require immediate attention.
