Name: Tartan Tangent One
Brand: Tartan

Sailing Performance & Handling

The Tangent One was built to thrive under the MORC rule, which prioritized speed and efficiency in a compact footprint. Unlike the original Sparkman & Stephens-designed Tartan 27, which featured a full keel and a more traditional silhouette, the Tangent One utilized a modern fin keel and a high-aspect fractional rig. This setup allows for much tighter tacking angles and more responsive handling, particularly in light to moderate air. According to historical design notes from Tartan Yachts, this era marked the brand's serious transition into advanced composite engineering to reduce weight and increase stiffness.

On the water, the boat is known for its agility. The fractional rig provides sailors with significant control over mainsail shape, allowing for flattened sail profiles when the breeze freshens. Because the boat was designed for racing, the deck layout is inherently ergonomic for a crew, featuring primary winches positioned for easy reach and a cockpit designed for efficient movement. While it tracks well for a fin-keel boat, it requires more active helming than the heavy-displacement cruisers of the same era, rewarding the sailor with a tactile, "dinghy-like" responsiveness.

Interior Comfort & Variations

Despite its racing pedigree, the Tangent One was not a completely stripped-out "sled." It maintained a functional, albeit compact, interior that adhered to the "performance-cruiser" ethos. The layout typically includes a V-berth forward, followed by a small head compartment. The main salon features two longitudinal settees that double as sea berths, providing accommodations for up to four adults in a pinch.

The primary sibling to the Tangent One is the Tartan 27-2. Both boats were built on the same 27-foot hull mold, but while the 27-2 was marketed as a family cruiser with a more substantial galley and wood-heavy interior, the Tangent One prioritized weight savings and sail-handling efficiency. Buyers of the Tangent One often find a more utilitarian aesthetic inside, with lighter materials and a focus on access to the mast step and chainplates. The headroom is modest, reflecting the boat's low-profile, aerodynamic cabin house, which was designed to reduce windage and lower the center of gravity.

Known Issues & Buyer’s Checklist

Prospective owners should approach the Tangent One with an eye toward the specific stresses of a performance-oriented life.

Deck Core Integrity: Like many Tartans of this era, the Tangent One uses a balsa-cored deck. Owners often report soft spots around high-load areas such as the mast partner and the mounting points for the primary winches. A thorough moisture meter test is essential.
Chainplate Leaks: The chainplates on this model are known to leak if the sealant is not regularly maintained. If left unchecked, this moisture can migrate into the bulkhead, compromising structural integrity.
Rudder Bearings: Given the boat’s age and its use in racing, the rudder bearings and the fiberglass surrounding the rudder post should be inspected for play or stress cracks, as the high-aspect spade rudder puts significant leverage on the hull.
Rigging Fatigue: Because the Tangent One utilizes a fractional rig with more sophisticated tuning options, the standing rigging and the mast step often see higher loads than a standard masthead cruiser. Check for "wire meat" or fishhooks in the stays and any deformation at the mast base.

Community & Resources

Owners of the Tangent One are usually welcomed within the broader Tartan 27 Association, which serves as the primary technical repository for the various 27-foot iterations. While the Tangent One is a rarer find than the classic S&S 27, the association provides invaluable cross-compatible information regarding hull maintenance and original hardware specifications.

The Verdict

The Tartan Tangent One is a "sailor's sailboat," offering a level of performance that belies its age and size. It is an ideal choice for the enthusiast who wants a classic aesthetic but refuses to sacrifice speed.

Pros