Jason 35 Information, Review, Specs

Sailing Performance & Handling

With a Displacement/Length (D/L) ratio of approximately 367, the Jason 35 is categorized as an "ultra-heavy cruiser," a trait that defines its behavior at sea. According to Ted Brewer Yacht Design, the hull features a full keel with a cutaway forefoot—often referred to as "Brewer’s bite"—which reduces wetted surface for better light-air performance while maintaining the exceptional tracking and directional stability expected of a full-keeled boat. Its Motion Comfort Ratio of roughly 35.4 indicates a vessel that resists the "snap" of quick rolling, providing a predictable, sea-kindly platform in heavy weather.

The cutter rig is a hallmark of the Jason 35, allowing the sail plan to be broken down into smaller, more manageable units for short-handed crews. Owners frequently report that the boat "sails on its ear" quite comfortably, though early versions of the design were notorious for significant weather helm. Anecdotes from the owner community suggest that the mast on certain early hulls was stepped too far aft; as a result, many owners have modified their vessels with the addition of a bowsprit or by moving the mast forward to balance the helm. While not a light-air flyer, the Jason 35 is described as a "freight train" once the wind exceeds 15 knots, maintaining its momentum through heavy chop with ease.

Interior Comfort & Variations

The interior of the Jason 35 reflects its purpose as a long-term voyaging home. The standard layout includes a spacious V-berth forward, a central salon with a large chart table to satisfy serious navigators, and a deep, secure galley designed for use at sea. Headroom is generous, often exceeding 6' 3", which is notable for a boat of this era and length.

Prospective buyers should be aware that the Jason 35 was frequently sold as a bare hull or a partially completed kit for owner finishing. Consequently, the quality of the interior joinery, electrical systems, and plumbing varies wildly across the fleet. Professionally finished examples typically feature heavy teak and "Captain’s Cabin" style strip-planked headliners. Several variations of the hull exist; while the standard design features a canoe-like transom, a one-off square-stern variant was produced for a specific client to provide more volume aft. Additionally, a pilothouse version was developed by the builder, though Ted Brewer famously noted in owner forums that he did not officially design the pilothouse structure himself.

Popular Mentions & Media

The Jason 35 occupies a "cult classic" status among the blue-water cruising community. Beyond its prominent feature in Ferenc Maté's Best Boats to Build or Buy, it is frequently listed by Mahina Expeditions as a recommended vessel for offshore voyaging. It remains a fixture in Pacific Northwest sailing lore, with many hulls having completed multiple circumnavigations or extended tours of Alaska and the South Pacific.

Known Issues & Buyer’s Checklist

The Jason 35 is a stoutly built boat, but its age and the nature of its construction require specific scrutiny:

• Weather Helm Balance: Potential buyers should confirm if the specific hull has undergone modifications (like a bowsprit extension) to address the design’s inherent tendency toward weather helm.
• Kit Construction Quality: Because many Jasons were owner-finished, a rigorous survey of the electrical wiring, through-hull installations, and tankage is essential. Poorly executed amateur work can be a significant liability.
• Deck Core Integrity: Like many boats of the 1970s and 80s, the Jason 35 often utilized a balsa-cored deck. Moisture intrusion around stanchion bases, chainplates, and the mast step can lead to core rot, requiring expensive repairs.
• Chainplates and Rigging: The original internal chainplates should be inspected for crevice corrosion, particularly where they pass through the deck.
• Engine Access: Depending on the interior layout, access to the auxiliary engine (commonly a Perkins 4-108 or similar) can be cramped, making routine maintenance difficult in certain configurations.

Community & Resources

The most prominent technical resource is the Jason 35 Sailboats Google Group, a highly active community of owners who share design drawings, modification advice, and historical data. Ted Brewer Yacht Design also continues to offer original plan sets and consultation for owners looking to verify specifications or plan major refits.

The Verdict

The Jason 35 remains one of the most capable 35-footers ever built for the sailor who values safety and "sea-kindliness" over modern interior volume and racing speeds.

Pros:

• Exceptional heavy-weather stability and comfort.
• Proven blue-water pedigree with numerous circumnavigations.
• Timeless, traditional aesthetics with high-quality fiberglass hulls.
• Large tankage capacities for long-range cruising.

Cons:

• Tendency for significant weather helm in original configurations.
• Slow performance in light winds due to heavy displacement.
• Variability in interior quality due to kit-built nature.
• Complex maintenance if deck core or chainplate issues are present.