Jensen Impala 36 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Jensen Impala 36 are defined by its heritage as a "little sibling" to the Cal 40. With a Displacement-to-Length (D/L) ratio typically in the mid-200s, the boat was considered exceptionally light for the 1960s, allowing it to surf in heavy following seas—a trait that famously led the Cal 40 to dominate the Transpac race. Under sail, the Impala 36 is known for its balance and responsiveness. The spade rudder provides immediate feedback and high maneuverability, though owners often note that the boat requires an attentive hand on the tiller or wheel in high-wind reaching conditions to prevent "rounding up."

The boat’s sail area-to-displacement ratio reflects a design intended to perform well in the light-to-moderate air typical of Southern California, yet its stiff construction allows it to handle heavy weather when reefed early. Because the hull is relatively flat toward the stern, the Impala 36 can achieve speeds that exceed its theoretical hull speed when off the wind. According to historical technical summaries from the Cal 40 Association, the Lapworth designs of this era revolutionized offshore racing by proving that light-displacement boats could be both seaworthy and faster than their heavier counterparts.

Interior Comfort & Variations

Unlike the more Spartan racing versions of later Cal models, the Impala 36 was designed with a degree of traditional elegance and "wood-heavy" aesthetics. The interior layout typically follows a classic plan: a V-berth forward with an overhead hatch for ventilation, followed by a head and hanging locker. The main salon features a settee and a pilot berth, a common feature in boats of this vintage intended for offshore racing where "lee cloths" and secure sleeping quarters were essential.

The cabin is characterized by extensive use of mahogany or teak joinery, which provides a warmer, more traditional feel than the "all-white" fiberglass liners found in later 1970s production boats. Headroom is generous for a 36-footer of its age, typically measuring around 6'2". Regarding siblings, the Impala 36 shares its hull with the standard Cal 36, but subtle variations exist in the deck mold and interior trim. Later, Jensen Marine introduced the Cal 2-36, which utilized a different deck with a more modern "wedge" coachroof and a more cruise-oriented interior, making the original Impala/Cal 36 the preferred choice for purists who value the classic Lapworth silhouette.

Known Issues & Buyer’s Checklist

Prospective buyers of a Jensen Impala 36 should prioritize a structural survey focusing on the era's specific construction techniques.

1. Mast Step Compression: The Impala 36 features a deck-stepped mast supported by a wooden compression post or a bulkhead-integrated support. Over decades, moisture can rot the wooden block beneath the mast step, leading to deck sagging and rigging tension issues.
2. Rudder Port and Blade: The spade rudder was a revolutionary design, but early fiberglass rudders are prone to "wicking" moisture into the internal foam core. This can lead to delamination or corrosion of the internal stainless steel skeleton.
3. Hull-to-Deck Joint: Jensen Marine utilized a chemically bonded and mechanically fastened hull-to-deck joint. While generally robust, the sealant can dry out after 50 years, leading to persistent leaks that can damage the interior cabinetry.
4. Chainplate Inspection: As with many yachts of the 1960s, the chainplates are made of stainless steel and are often glassed into the hull or bolted through bulkheads. Inspecting these for crevice corrosion is critical, as they are often original equipment.
5. Atomic 4 Engine: Many Impala 36s were originally fitted with the Universal Atomic 4 gasoline engine. While reliable if maintained, many owners have since repowered with diesels. A buyer should verify the age and fuel-system integrity of any original gasoline installation.

Community & Resources

Owners of the Jensen Impala 36 benefit from one of the most dedicated classic boat communities in the United States. Technical support and original design documentation are frequently shared through the Cal Boats Owner's Association, which covers the various Jensen Marine iterations. While the "Impala" branding is less common than the "Cal" name, the technical specifications are identical, allowing owners to source parts and advice from the broader Cal 36 and Cal 40 networks. The Bill Lapworth Design Archive remains a vital point of reference for those looking to restore these vessels to their original racing specifications.

The Verdict

The Jensen Impala 36 is a quintessential "sailor's sailboat," offering a level of performance that remains competitive in PHRF racing today while providing enough comfort for coastal cruising. It is a vessel for those who appreciate the history of yacht design and the crisp handling of a Bill Lapworth hull.

Pros:

• Exceptional Pedigree: A direct descendant of the revolutionary Cal 40.
• Aesthetic Appeal: Classic lines with a low-profile coachroof and traditional wood interior.
• Performance: Capable of surfing in following seas and performing well in light air.
• Value: Offers significant offshore capability and speed for a relatively low entry price.

Cons:

• Maintenance Intensive: Older fiberglass requires vigilant care regarding deck cores and rudder integrity.
• Age of Systems: Original plumbing and wiring are likely at the end of their service life.
• Narrow Beam: By modern standards, the interior feels narrow compared to contemporary 36-footers.