Endeavour 35 Sailboat Review, Specs, and Listings

Hull and Deck Construction

The E35 hull is molded as a single unit of polyester resin, fiberglass, and closed-cell polyvinyl foam core, with the keel section integrated rather than bolted on as a separate appendage. All lead ballast is cast in pieces, placed in the hull, encapsulated in polyester bonding resin, and covered with woven roving to become a structural part of the hull itself — a detail worth understanding before any keel work. The deck and cockpit are molded as a single unit as well, with closed-cell polyvinyl and plywood coring incorporated between layers of fiberglass in the cabin top, deck, seat, and cockpit sole areas for stiffness. The hull-to-deck joint is a flanged type that is liberally coated with a combination adhesive/sealant and fastened with stainless steel through-bolts, then finished with a teak cap bedded in the same compound — a double seal that has aged with variable results depending on maintenance history. The rudder is solid high-density foam with a protective fiberglass skin, the post solid stainless steel welded to an internal blade.

Rig and Sailing Performance

Kelley chose a masthead sloop arrangement, and the numbers bear out his upwind ambitions. The sail area-to-displacement ratio indicates faster performance than the vast majority of similar sailboat designs in light wind, and the boat carries more rig than most comparable sailboats — a characterization the designers would probably have accepted as a compliment. The mast is stepped through the cabin roof onto the keel, which improves structural load transfer but demands careful attention to the partners and compression post below. Spars are extruded aluminum 6061-T6 alloy with Kenyon double spreader masts as typically fitted, with the boom sheeting near mid-span and the traveler spanning the coachroof. Standing rigging uses 9/32-inch stainless steel wire throughout on all primary stays and shrouds, attached to chainplates through-bolted to structural bulkheads. The masthead configuration carries its sail area lower and with less heeling moment than a fractional rig of equivalent area — practically, the E35 powers up well in light air and can be kept on her feet in a breeze without requiring exotic sail handling.

Stability and Motion

The capsize screening value of 2.06 sits just above the threshold typically required for offshore racing acceptance, placing the E35 squarely in the coastal-to-bluewater-capable category rather than the open-ocean offshore racer bracket. The ballast-to-displacement ratio of 42 percent is above average compared with similar designs, translating to meaningful initial and secondary stability. The motion comfort ratio of 23.4 is just below average for the category — the boat is not a heavy-displacement sea-kindly cruiser, and in a steep chop it will remind you of that, but it is not unusually tender either. The displacement-to-length ratio of 231 places it among moderate racers, lighter than two-thirds of comparable designs. The beam of 12'2" gives a length-to-beam ratio that is more spacious than the large majority of similar designs, which shapes the accommodation below but adds to capsize screening.

Accommodations

Kelley's stated intention was to give the boat the room below to accommodate a comfortable layout, and the wide beam makes this possible. Published specifications show six berths and 76 gallons of fresh water capacity, along with 33 gallons of diesel and a 15-gallon holding tank — numbers that support extended coastal passages without reprovisioning at every port. Headroom is noted in the specification but Endeavour's own documentation acknowledges this as a category to reference rather than enumerate in shorthand. The wide hull carries its beam well aft, which benefits both the cockpit volume and the aft cabin arrangements below. Fiberglass maintenance demands are minimal during the sailing season compared with wood construction — a practical advantage for an owner who is sailing the boat rather than refinishing it.

Known Construction Considerations

The integrated keel construction, while structurally elegant in concept, means that any delamination or osmotic issues in the keel-hull interface require more involved repair than a bolted external keel would. The stuffing box arrangement where the rudder post passes through the hull is a routine inspection point — the original packing glands on boats of this era benefit from conversion to dripless shaft seals. The E35 was fitted with a Perkins 4-108 diesel, a well-documented engine with a long service history and a substantial parts and workshop manual base. Boats of this vintage should have the raw-water impeller, heat exchanger, and injectors on a regular maintenance schedule; Perkins parts remain available through the secondary market. The teak cap on the hull-to-deck joint, common to this era of production, can trap moisture if the bedding compound has deteriorated — a methodical inspection of this joint is warranted on any example under consideration.

Refit Priorities

The Kenyon aluminum spars on the E35 were double spreader masts, and mast-step and chainplate inspection should be a first-pass item given the keel-stepped configuration and the age of the through-fastenings. Running rigging dimensions for the masthead setup are well-documented, with halyards running 34 meters and sheets in the 10-27 meter range depending on role, making a full running-rigging replacement a budgetable and straightforward project. The pedestal steering system operates on stainless steel cables rotating a radial quadrant; cable stretch and sheave wear are the most common culprits when steering develops slop. Given the foam-cored deck construction, moisture intrusion into core around deck hardware is a period-appropriate concern — any refastening of hardware should include core inspection and resealing.

The Verdict

The Endeavour 35 represents a coherent, purpose-driven design that succeeded at what it set out to do: deliver a lively, upwind-capable 35-footer with genuine cruising room inside. Its production numbers — around 300 hulls in four years — reflect a boat that sold on its merits rather than marketing alone. It is not a blue-water passage-maker by the numbers, and its motion in a seaway reflects its moderate displacement. But for coastal and extended coastal sailing, it punches above its displacement class in sail-carrying ability, and the interior volume made possible by its wide beam remains a genuine asset.

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