Endeavour 51 Information, Review, Specs

Sailing Performance & Handling

Despite its substantial displacement of approximately 36,000 pounds, the Endeavour 51 reflects Johan Valentijn’s expertise in hull efficiency. The boat features a moderate-to-heavy displacement-to-length ratio, which translates to a powerful, sea-kindly motion in heavy weather. While it is not a light-air flyer, the yacht’s cutter rig provides a versatile sail plan that allows for easy reefing and balancing when the wind freshens. The hull's deep-V entry and relatively flat sections aft help it track well on a reach, though its beam of 14' 6" and shoal draft (typically 5' 6") mean it can be prone to more leeway than a deep-finned racer when beating to windward.

According to the Endeavour 51 Specifications maintained by the owner's association, the vessel was engineered with a "force grid" system—a multi-axial steel-reinforced fiberglass structure bonded to the hull. This design choice was intended to mitigate the flex often found in large fiberglass hulls of the 1980s, providing a stiffer platform that improves rig tension and, by extension, upwind performance. Handling under power is generally predictable thanks to the large propeller aperture and significant rudder surface, though the high freeboard and windage require a confident hand when maneuvering in tight marinas.

Interior Comfort & Variations

The interior of the Endeavour 51 was designed to be its primary selling point, offering a level of volume that rivaled much larger custom yachts of the time. The center-cockpit configuration allowed for a massive, full-beam master stateroom aft, often featuring a centerline queen berth and a private en-suite head with a dedicated shower stall. Moving forward, the walk-through galley is typically located on the port side, providing a secure "U-shape" workspace that remains functional even while the boat is heeled.

The salon is expansive, utilizing the 14.5-foot beam to provide a large settee and a formal dining area. While many units were configured with a three-cabin "charter" layout—featuring two guest cabins forward of the mast—some were customized for private owners with a two-cabin arrangement that significantly enlarged the forward VIP suite. The use of extensive teak joinery and a teak-and-holly sole was standard, creating a classic, warm aesthetic. The Endeavour 51 Brochure highlights that the boat was offered with both a sloop and a cutter rig, with the latter being more popular for long-distance cruising due to the added flexibility of the staysail.

Known Issues & Buyer’s Checklist

Prospective buyers of an Endeavour 51 should focus their inspections on the specific construction methods used during the mid-to-late 1980s.

• Deck and Hull Coring: Like many yachts of this era, the E51 used end-grain balsa or Klegecell foam in the decks. Moisture intrusion around stanchion bases, windlasses, and hatches is a common "gotcha" that can lead to localized delamination or core rot. A professional moisture meter survey is essential.
• Grid System Integrity: While the "force grid" was an innovative solution for stiffness, buyers should inspect the bond between the grid and the hull in the bilge areas. Any signs of "tabbing" separation could indicate past grounding or structural stress.
• Chainplate Inspection: The E51 features inboard chainplates to allow for tighter sheeting angles. Because these pass through the deck, they are susceptible to leaks that can cause corrosion hidden behind the interior cabinetry.
• Tankage: The aluminum fuel and water tanks are often original. Given the age of these vessels, corrosion at the bottom of the tanks (where moisture settles) can lead to leaks that are notoriously difficult and expensive to repair due to their placement under the cabin sole.

Community & Resources

The Endeavour 51 benefits from one of the most robust owner support networks in the cruising world. The Endeavour Owners Group serves as a centralized repository for technical manuals, original factory blueprints, and an exhaustive database of model-specific upgrades. This community is particularly valuable for E51 owners, as it provides a platform for discussing the specific maintenance needs of the Valentijn-designed flagship models, which differ significantly from the earlier, simpler Endeavour 32 and 37 models.

The Verdict

The Endeavour 51 remains a compelling option for cruisers who prioritize living space and "big boat" feel without the price tag of a modern luxury yacht. While its size and complexity require a more rigorous maintenance schedule than smaller Endeavours, its pedigree as a Valentijn design ensures it is more than just a "floating condo."

Pros:

• Exceptional Volume: The aft cabin and salon are cavernous, making it an ideal live-aboard platform.
• Valentijn Pedigree: A well-balanced hull that handles heavy offshore conditions with composure.
• Structural Stiffness: The internal grid system provides a solid feel under sail rarely found in 1980s production boats.

Cons:

• Aging Systems: Original plumbing, wiring, and tanks will likely require significant updates for modern cruising.
• High Windage: The high freeboard and center-cockpit profile make it challenging to handle in high-wind docking scenarios.
• Shoal Draft Trade-off: While excellent for the Bahamas, it sacrifices some pointing ability compared to deep-draft competitors.