The boat was produced primarily between 1975 and 1977, during which time it shared a design lineage with several international siblings. These include the Contessa 35, built by Jeremy Rogers in the UK, and the Cavalier 36, built in Australia. While these models differ in displacement and internal finish, they all utilize the core Peterson DNA: a sharp entry, a flat run aft, and a high-performance fin keel.
Sailing Performance & Handling
The Impala 36 is characterized by its exceptional stiffness and upwind tracking, a result of a ballast-to-displacement ratio that exceeds 50%. With a displacement of approximately 12,787 lbs and nearly 6,500 lbs of lead ballast, the boat stands up well to heavy air, allowing it to maintain a favorable sail area-to-displacement ratio in conditions that force lighter modern boats to reef early.
Under sail, the boat exhibits the classic traits of an IOR-era racer. It is highly responsive and excels in light to moderate air, particularly on a beat or close reach. However, owners and historical technical reviews, such as those archived by Classic Boat Italia, note that the narrow stern and deep-V sections forward—hallmarks of the IOR "rule-beater" design—can make the boat prone to rhythmic rolling or "death rolls" when running downwind in heavy seas with a spinnaker. This requires an active hand on the helm and careful trim management to keep the hull balanced.
Interior Comfort & Variations
For a vessel born in the racing circuit, the Impala 36 offers a surprisingly robust interior. The layout is a traditional 1970s racer-cruiser configuration: a forward V-berth, a central salon with two settee berths (often including pilot berths above the settees for offshore racing), and a compact galley and navigation station flanking the companionway.
Materials typically include a mix of teak and mahogany veneers, which were common for the Italian-built versions by Cantiere Navale 71. Headroom is generous at roughly 6' 2", though the space can feel cramped compared to modern high-volume cruisers due to the boat's relatively narrow 10.8-foot beam. Unlike its UK-built sibling, the Contessa 35, which often featured more elaborate woodwork, the Impala 36 was frequently delivered with a more utilitarian, weight-conscious finish to preserve its racing rating.
Known Issues & Buyer’s Checklist
Prospective buyers should prioritize the following technical areas during inspection:
- Rudder Bearings and Post: The spade rudder on the Impala 36 is subject to significant stress. Over time, the internal stainless steel skeleton of the rudder can corrode, and the bushings frequently develop "slop," leading to vibration at high speeds.
- Deck Core Integrity: Like many 1970s fiberglass hulls, the deck is a sandwich construction. Areas around high-load hardware, such as the genoa tracks and the mast step, are prone to moisture ingress and delamination if they haven't been re-bedded recently.
- Keel-to-Hull Joint: Given the extremely high ballast ratio, the keel bolts and the fiberglass surrounding the keel sump must be inspected for "smile" cracks or signs of hard grounding, which can compromise the structural integrity of the deep fin keel.
- Engine Accessibility: Most original models were equipped with small Volvo or Farymann diesel engines. The engine compartment is notoriously tight, making routine maintenance on the water pump or alternator a difficult task.
Community & Resources
The Impala 36 remains a popular choice in the Mediterranean and among "Classic IOR" enthusiasts. Owners typically congregate within broader organizations such as the One Ton Class historical registries or the Associazione Italiana Vele d'Epoca (AIVE), which celebrates the history of IOR designs. Technical data and historical build records are often shared via the One Ton Class research database, which tracks the specific racing histories of various Peterson-designed hulls.
The Verdict
The Peterson Impala 36 is a "sailor's boat"—a piece of maritime history that offers a visceral, rewarding experience for those who appreciate the technical demands of the IOR era.
Pros:
- Superior Upwind Performance: Extremely stiff and capable of punching through a chop with ease.
- Design Heritage: A direct descendant of Ganbare, carrying the prestige of one of the 20th century's most influential designers.
- Structural Robustness: Heavily built compared to contemporary light-displacement racers.
Cons:
- Challenging Downwind Handling: Prone to rolling in heavy following seas.
- Dated Ergonomics: Narrow stern and high-centered cockpit are less comfortable for social cruising.
- Maintenance Intensive: Requires careful monitoring of 50-year-old fiberglass and high-load racing hardware.
