Thomas 35 Information, Review, Specs

Thomas 35 Drawing
Make
Thomas
Model
35
Builder
Thomas Marine Inc./Tartan Marine
Designer
Graham & Schlageter
Number Built
Production Year(s)
1988 - ??

The Thomas 35 represents a strategic pivot for Tartan Marine during the mid-1980s, serving as the company’s dedicated foray into the competitive racer-cruiser market. Designed by Tim Jackett—whose name is synonymous with the modern Tartan legacy—the Thomas 35 was marketed under the "Thomas Marine" subsidiary to preserve Tartan’s reputation as a builder of traditional, heavy-displacement cruisers while offering a platform that could compete directly with the era's performance leaders like the J/35 and C&C 35. Built with the same rigorous construction standards as its Tartan siblings, the Thomas 35 is a fractional-rigged sloop that balances a high-performance hull form with a level of interior craftsmanship rarely seen in 1980s offshore racers. Approximately 30 units were produced between 1986 and 1990, making it a relatively rare but highly sought-after "sleeper" on the used market for sailors who prioritize speed without sacrificing build integrity.

Sailing Performance & Handling

The Thomas 35 was engineered to excel in the PHRF (Performance Handicap Racing Fleet) circuit, featuring a deep fin keel and a balanced spade rudder that provide exceptional agility and "dinghy-like" responsiveness. With a displacement-to-length ratio (D/L) significantly lower than contemporary Tartan models, the boat accelerates quickly in light air. Its fractional rig, a departure from the masthead rigs common on cruising Tartans, allows for precise mainsail trimming and easier headstay tension control, which is critical for upwind performance.

The boat is widely regarded for its stiffness and ability to hold its lane in a breeze. Handling is described by owners as predictable but sensitive; the boat rewards active trimming. While it was designed to be driven hard around the buoys, the hull's moderate beam and well-distributed volume prevent it from becoming overly "twitchy" when pressed. According to historical design notes from Tartan Yachts, the integration of advanced laminates and a focus on weight distribution were paramount to ensuring the Thomas 35 could maintain a competitive edge while remaining seaworthy for offshore passages. Unlike many pure racers of its time, the Thomas 35 tracks well enough to be handled by a shorthanded crew, provided they are comfortable managing the large mainsail and running backstays, if equipped.

Interior Comfort & Variations

While the exterior of the Thomas 35 screams performance, the interior reveals its Tartan DNA through the extensive use of teak and a functional, sea-going layout. Unlike the "stripped-out" interiors of many 1980s racing yachts, the Thomas 35 features a complete cruising arrangement. The layout typically includes a V-berth forward, a central salon with two long settees that double as sea berths, and a substantial galley to starboard. To port, a dedicated navigation station serves as the command center for offshore racing.

One of the more innovative aspects of the interior is the aft cabin arrangement. While some versions were optimized for weight with open quarter berths, others featured a more enclosed aft cabin to provide privacy for cruising couples. The headroom is surprisingly generous for a low-profile racer-cruiser, and the craftsmanship of the joinery is a step above the production standards of the time. The transition from the Thomas 35 to the later Tartan 3500 saw a significant shift toward luxury, but the Thomas 35 remains the preferred choice for the purist who values a clean, functional aesthetic that facilitates easy movement during a sail change or a heavy-weather tack.

Known Issues & Buyer’s Checklist

Prospective buyers of a Thomas 35 should focus their inspections on the specific stresses associated with high-performance sailing and the materials used during the mid-1980s.

  1. Mast Step and Compression: As with many boats of this era utilizing a deck-stepped or keel-stepped fractional rig, the mast step area should be inspected for signs of compression or moisture ingress into the core.
  2. Deck Core Integrity: The Thomas 35 uses a balsa-cored deck for weight savings. Areas around high-load deck hardware, such as the genoa tracks, chainplates, and the traveler, are prone to delamination if the bedding has failed over time. A professional moisture meter reading is essential.
  3. Keel Attachment: Given its racing pedigree, the keel-to-hull joint (the "smile") should be checked for signs of movement or impact. The stainless steel keel bolts require torque verification, especially if the boat has been campaigned heavily.
  4. Rudder Bearings: The spade rudder is subject to high loads. Excessive play in the rudder post or stiff steering often indicates that the bearings or bushings are due for replacement.
  5. Running Backstays: Some Thomas 35s were fitted with running backstays to support the fractional rig. Buyers should inspect the attachment points and the condition of the wire or Dyneema for fraying or fatigue.

Community & Resources

Owners of the Thomas 35 are often integrated into the broader Tartan community, as the boats were built in the same Ohio facility and share many components with the Tartan 34-2 and Tartan 37. The Chesapeake Bay Tartan Sailing Club and the Tartan Owners Northeast (TONE) are the primary hubs for technical support and social events. These organizations provide a wealth of knowledge regarding refits, part sourcing, and historical documentation that is specific to the "Thomas" branded vessels.

The Verdict

The Thomas 35 is an exceptional hybrid that captures a specific moment in naval architecture when performance and build quality were not mutually exclusive. It remains a premier choice for the sailor who wants a "classic" look with modern speed.

Pros:

  • High-quality Tartan construction in a performance-oriented hull.
  • Competitive PHRF rating and excellent light-air performance.
  • A "real" interior with fine teak joinery, suitable for weekend cruising.
  • Strong community support through Tartan owner associations.

Cons:

  • Balsa-cored decks require vigilant maintenance to prevent rot.
  • Limited production numbers make finding one on the market difficult.
  • The fractional rig and high-load hardware require more active management than a dedicated cruiser.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
4450 lbs (Lead)
Displacement
9800 lbs
Water Capacity
35 gal
Fuel Capacity
20 gal

Dimensions

Length Overall (LOA)
35.42 ft
Waterline Length (LWL)
30.5 ft
Beam
11.5 ft
Draft
6.83 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
48 ft
E (Main Foot)
15 ft
I (Foretriangle Height)
48 ft
J (Foretriangle Base)
14.25 ft
Forestay Length (est)
50.07 ft
Sail Area
702 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
24.52
Ballast / Displacement Ratio
45.41
Displacement / Length Ratio (D/L) Ratio
154.2
Comfort Ratio
18.31
Capsize Screening Formula
2.15
Hull Speed
7.4 kn