The Lapworth Endeavor 26 stands as a quintessential representative of the early fiberglass revolution that transformed American yachting in the 1960s. Designed by the legendary C. William "Bill" Lapworth and manufactured by the W.D. Schock Corporation, this 26-foot sloop was a precursor to the performance-oriented designs that would later define the "Cal" series. Introduced in the early 1960s, the Endeavor 26 was marketed as a sturdy, capable family cruiser that offered a transition from the traditional wooden boats of the era to the low-maintenance promise of reinforced plastic. While it lacks the extreme light-displacement characteristics of Lapworth’s later racing triumphs, it maintains a reputation for structural integrity and classic West Coast styling.
Lapworth Endeavor 26 Information, Review, Specs

- Make
- Lapworth
- Model
- Endeavor 26
- Builder
- W. D. Schock Corp.
- Designer
- William Lapworth
- Number Built
- 56
- Production Year(s)
- 1963 - 1967
Sailing Performance & Handling
The Endeavor 26 reflects Bill Lapworth’s early exploration into reducing wetted surface area while maintaining stability. Unlike the heavy full-keel cruisers of the 1950s, the Endeavor 26 features a long fin keel and a transom-hung rudder, a configuration that provides a balanced feel on the helm. With a displacement-to-length ratio that leans toward the moderate-heavy side compared to modern sportboats, the hull offers a sea-kindly motion, resisting the "hobby-horsing" often found in lighter 20-footers.
Under sail, the boat is known for its predictable tracking and ability to carry its momentum through a chop. The high ballast-to-displacement ratio ensures that the vessel remains relatively stiff, even when the afternoon breeze picks up. While it is not a "pointing machine" by modern standards, its performance in a reaching breeze is frequently praised by owners. The rig is a simple masthead sloop, which allows for a variety of headsails to suit different wind conditions, though most modern users find a 135% genoa provides the best compromise for light-air performance.
Interior Comfort & Variations
For a 26-foot vessel designed in the early 1960s, the Endeavor 26 maximizes its internal volume through a functional, if somewhat traditional, layout. The cabin typically features a V-berth forward, a compact enclosed head to port, and a main salon with settee berths. The use of mahogany trim against the white fiberglass liners was a signature W.D. Schock aesthetic, providing a warmer feel than the "all-plastic" interiors of later budget builders.
Headroom is modest—approximately 5'10"—which was standard for the era but can feel cramped for taller modern sailors. The galley is usually located aft near the companionway for ventilation, featuring a small sink and space for a portable stove. During its production run, W.D. Schock offered slight variations in cabinetry and upholstery, but the hull remained a constant. The boat’s sibling, the Lapworth 24, offered a scaled-down version of this experience, while the Gladiator 24 (another Schock-built Lapworth design) focused more on a flush-deck aesthetic and racing utility.
Known Issues & Buyer’s Checklist
Prospective buyers of an Endeavor 26 should approach the vessel with an understanding of early fiberglass construction techniques. While the hulls are often "over-built" and exceptionally thick, the materials used for the deck core and structural reinforcements require scrutiny.
- Deck Delamination: Like many boats of this vintage, the Endeavor 26 often utilized plywood or balsa as a core material in the decks. Over decades, leaks around stanchion bases or the mast step can lead to core rot, resulting in "soft spots."
- Chainplate Inspections: The chainplates are bolted through the hull or bulkheads. These should be checked for signs of "weeping" or rust streaks, which indicate water ingress that could compromise the structural bulkheads.
- Early Osmotic Blistering: While Schock used high-quality resins for the time, early fiberglass is still susceptible to hull blisters. A haul-out inspection is mandatory to assess the state of the gelcoat below the waterline.
- Rudder Integrity: The transom-hung rudder is robust, but the gudgeons and pintles (the hardware attaching the rudder to the boat) can suffer from metal fatigue or wallowed-out holes after sixty years of service.
- Original Wiring: Many Endeavor 26s still carry their original "spaghetti" wiring. Modern electronics and LED lighting upgrades usually necessitate a complete rewiring of the 12V system for safety.
Community & Resources
The legacy of the Endeavor 26 is closely tied to the broader Schock and Lapworth communities. Owners often find technical support and historical documentation through the Schock owners' networks. Information regarding original specifications and replacement parts can often be sourced through the W.D. Schock Corporation legacy archives, which continue to serve as a touchstone for West Coast sailing history.
The Verdict
The Lapworth Endeavor 26 is a "plastic classic" that offers an affordable entry point into traditional cruising. It is a boat for the sailor who appreciates mid-century design and is willing to invest sweat equity into maintaining a piece of maritime history.
Pros:
- Robust, thick fiberglass hull construction.
- Predictable and forgiving handling characteristics for novice sailors.
- Timeless Bill Lapworth aesthetics that still turn heads in a marina.
- Strong secondary market value for well-restored examples.
Cons:
- Limited headroom compared to modern wide-beam cruisers.
- Susceptibility to deck core rot and aged hardware.
- Lacks the light-air acceleration of more modern 26-foot designs.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x —
- Ballast
- 1600 lbs (Lead)
- Displacement
- 3200 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 25.75 ft
- Waterline Length (LWL)
- 18 ft
- Beam
- 7 ft
- Draft
- 4 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 28 ft
- E (Main Foot)
- 11.13 ft
- I (Foretriangle Height)
- 25.83 ft
- J (Foretriangle Base)
- 9 ft
- Forestay Length (est)
- 27.35 ft
- Sail Area
- 272 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 20.04
- Ballast / Displacement Ratio
- 50
- Displacement / Length Ratio (D/L) Ratio
- 244.95
- Comfort Ratio
- 18.21
- Capsize Screening Formula
- 1.9
- Hull Speed
- 5.69 kn