Design Brief & Intent
Halsey Herreshoff drew the TMI 30 to offer the internal volume and cruising amenities of a much larger vessel, without sacrificing the balanced handling expected of his design pedigree. Measuring 29.92 feet overall with an uncommonly wide 11.00-foot beam, the boat earned a reputation among owners as "the biggest 30-footer" of its era. This expansive beam is carried far aft, which translates directly into a spacious, open cockpit and an exceptionally wide salon.
Below decks, the TMI 30 was targeted directly at the family coastal cruising market, competing with the ubiquitous Catalina 30 and Pearson 30. The interior features a traditional layout but with an airy, voluminous feel, enhanced by a generous headroom and high topsides. The joinery is dominated by warm teak and molded fiberglass headliners. However, because TMI suffered from production inconsistencies during its brief operations, early hulls can exhibit a "rough-around-the-edges" finish in out-of-sight areas, such as behind locker faces, inside the bilge, and beneath the berths.
Variations & Configurations
Throughout its production run from 1979 to 1981, the TMI 30 was built as a fractional sloop, a rig choice that makes mainsail control paramount while easing headsail handling for short-handed crews.
The primary structural variation of the TMI 30 lies in its draft configurations:
- Deep Draft Fin Keel: The standard version features a high-aspect fin keel drawing 4.92 feet, maximizing lift and upwind efficiency.
- Shoal Draft Keel: A shoal draft version drawing approximately 3.92 feet (3 feet, 11 inches) was offered for thin-water regions like the Chesapeake Bay or Florida Keys.
Auxiliary power in TMI hulls was primarily supplied by the robust two-cylinder, 11-horsepower Universal Atomic diesel engine driving a V-drive transmission. Owners should note that the original fuel capacity was quite modest at 18 gallons, emphasizing the boat's design as a coastal hopper rather than a long-range passage maker.
Sailing Performance & Handling
The TMI 30 is built with a displacement of 9,500 pounds and carries 4,250 pounds of lead ballast. This yields an exceptionally high ballast-to-displacement ratio of 44.74%, making the boat remarkably stiff and capable of standing up to its canvas when the breeze builds. In 15 to 20 knots of wind, the TMI 30 shines, tracking steadily with minimal weather helm.
However, with a relatively conservative sail area-to-displacement ratio of 15.55, the boat can feel underpowered in light air under its standard working sails. To maintain competitive speeds in under 10 knots of wind, owners typically must fly a large 150% genoa or an asymmetrical spinnaker.
The boat’s displacement-to-length ratio of 241.30 places it firmly in the medium-displacement category. Its motion comfort ratio of 22.16 indicates a relatively predictable ride in a chop, though it will dance more than a heavy-displacement full-keel cruiser. The capsize screening formula of 2.08 is just over the traditional racing threshold of 2.00, reinforcing that while the TMI 30 is highly capable of coastal hops and offshore island runs, it is not intended for extreme blue-water survival conditions.
Market Snapshot & Economics
Because Texas Marine International operated for only two years, the TMI 30 is a relatively rare commodity. It is often sold under the "Chrysler" or "Ticon" nameplates, depending on how brokers categorize the listing. On the used market, it represents an exceptional "sleeper" value. Lacking the name recognition of Catalina or Hunter, a TMI 30 often trades at a significant discount compared to its peers, despite offering equivalent or superior structural integrity.
For buyers on a budget, this makes it an highly affordable pathway to a comfortable 30-foot cruiser. However, the economics of a refit must be weighed carefully: because the market value of these boats is capped by their vintage, major upgrades (such as a full engine replacement or professional deck recoring) can easily exceed the hull's market value.
Known Issues & Triage
Prospective buyers should approach the TMI 30 with a keen eye for common mid-production issues:
- Deck Delamination: Like most production boats of its era, the TMI 30 features a balsa-cored deck. Water intrusion around the chainplates, stanchions, and the mast step can lead to soft spots. A thorough sounding with a fiberglass hammer is mandatory during any survey.
- Keel-Hull Joint Seepage: A cosmetic or minor structural crack can occasionally develop at the leading edge of the keel-to-hull joint (commonly referred to as a "smile"). While typically resolved by dropping the keel, cleaning the mating surfaces, and retorquing the keel bolts, it warrants close inspection.
- Loose Internal Tanks: On early Canadian and late TMI builds, surveyors have noted that the freshwater and holding tanks located under the salon berths were sometimes installed without straps or secure physical tie-downs. Owners should retrofit heavy-duty webbing or fiberglass tabs to prevent the tanks from shifting in heavy seas.
- Deck Hardware Strain: The cabintop-mounted mainsheet traveler is located well forward. While this keeps the cockpit clean and safe, the mechanical disadvantage means trimming the main in heavy air requires significant physical effort.
The Verdict
The TMI 30 is an overlooked gem of the late-1970s fiberglass era. It delivers an incredibly spacious cabin, exceptional stiffness in a blow, and an elegant Herreshoff design pedigree at a fraction of the cost of its more famous competitors. It is best suited for coastal families, club racers, and pocket-cruising couples who prioritize structural solidity over brand prestige.
Pros
- Unmatched Interior Volume: The 11-foot beam makes the salon and cockpit feel like those of a 33- to 34-foot boat.
- Exceptional Stiffness: The 44.74% ballast ratio ensures the boat sails upright and handles heavy chop with confidence.
- Affordable Entry Point: Command-value pricing on the brokerage market makes it a bargain for budget-conscious sailors.
- Elegant Pedigree: Designed by Halsey Herreshoff, featuring clean lines and a highly balanced hull shape.
Cons
- Underpowered in Light Air: The conservative sail area means the boat requires light-air sails to perform well in under 10 knots of wind.
- Short Range: Originally built with limited fuel (18 gallons) and water capacity, restricting extended cruising autonomy.
- Rough Interior Detailing: Early TMI hulls often have rough fiberglass and unfinished joinery in hidden lockers and bilge compartments.
- Balsa-Core Vulnerability: Susceptible to deck rot around the mast step and cockpit if deck hardware was neglected.
