S2 8.5 Information, Review, Specs

Sailing Performance & Handling

The S2 8.5 is characterized by a conservative hull form that emphasizes "sea-kindliness" over raw speed. With a displacement of approximately 8,000 pounds and a ballast-to-displacement ratio hovering near 37%, the boat is notably stiffer than many of its lightweight contemporaries. This weight, combined with an Arthur Edmunds-designed hull that features a relatively deep entry and a full-bodied midsection, allows the 8.5 to track exceptionally well in a chop. Owners often report that while the boat requires about 10 to 12 knots of breeze to truly "wake up," it remains composed and dry when the wind pushes toward 20 knots—a scenario where lighter 28-footers often become skittish and prone to round-outs.

The sail area-to-displacement ratio (SA/Disp) sits in the moderate range, reflecting its role as a cruiser. Under sail, the 8.5 behaves predictably, with a balanced helm that provides just enough feedback without becoming tiring. Because the boat was designed with a masthead rig, the power comes primarily from the headsail; consequently, a high-quality furling system and a 135% or 150% genoa are standard upgrades for most owners looking to maintain performance in light air. The boat was typically offered with a fin keel drawing roughly 4'11", though a shoal-draft version was produced to accommodate the thinner waters of the Chesapeake and the Florida Keys.

Interior Comfort & Variations

One of the strongest selling points of the S2 8.5 is an interior that feels significantly larger than its 28-foot length suggests. S2 Yachts utilized the boat’s 9'6" beam to create an open, airy cabin with approximately 6'1" of headroom, a rarity for vessels in this size class from the early 80s. The joinery is a highlight; Leon Slikkers brought powerboat-level cabinetry to the sailing world, utilizing a mix of solid teak and high-quality veneers that have aged better than the "simulated wood" found in many production boats of the era.

The layout is traditional but refined: a V-berth forward, a head with a shower (a luxury for a 28-footer), and a main salon with a folding table. S2 produced two primary interior variations: a "standard" layout and a "dinette" version. The standard layout features opposing settees, while the dinette version provides a dedicated eating area that converts into a double berth. The galley is generally located to starboard near the companionway, featuring a deep sink and a two-burner stove. S2 also built the S2 8.0 and the later S2 8.6 on similar lines; while the 8.0 was a slightly smaller, more basic precursor, the 8.6 was the "modernized" evolution of the 8.5, featuring an updated rudder design and integrated swim platform elements.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the S2 8.5 with a focus on its specific construction methods. While the hulls are solid fiberglass, the decks are balsa-cored.

• Deck Core Saturation: Like many boats of this vintage, the S2 8.5 is susceptible to water intrusion around deck hardware. Particular attention should be paid to the areas around the chainplates, stanchion bases, and the mast step. Spongy sections or brown "tea staining" around bolts are indicators of core rot.
• Compression Post Support: There have been documented cases on owner forums of the overhead compression post support (the beam under the mast step) showing signs of sagging or compression over time. A visual inspection for "crow’s foot" cracking in the gelcoat around the mast step is essential.
• Rudder Post Play: The spade rudder on the 8.5 can develop play in the bushings. Buyers should check for excessive "clunking" when moving the rudder manually while the boat is on the hard.
• Engine Serviceability: Most 8.5 models were equipped with Yanmar or Volvo Penta diesel engines. While these are reliable, the engine engine compartment is compact; checking for evidence of "exhaust elbow" failure or heat exchanger leaks is vital, as access for major repairs can be tight.

Community & Resources

Owners of the S2 8.5 benefit from a dedicated and highly active community. The S2 Sailboats Owner's Association serves as the primary technical repository, offering digitized versions of original brochures and wiring diagrams. Because many S2 components were shared with the Tiara powerboat line, parts for hatches and portlights are often easier to source than for other defunct brands.

The Verdict

The S2 8.5 is an overbuilt, aesthetically pleasing coastal cruiser that offers an excellent entry point for sailors who prioritize build quality and interior comfort over racing trophies.

Pros:

• Exceptional build quality and interior woodwork compared to 1980s competitors.
• Generous headroom (6'1") and beam make it feel like a 30-foot boat.
• Stiff, predictable handling that inspires confidence in heavy weather.

Cons:

• Heavy displacement makes it sluggish in light air (under 8 knots).
• Potential for balsa-core issues in the deck if hardware was not re-bedded.
• Relatively small cockpit for those who prioritize outdoor entertaining over cabin space.