Formula Boats for Sale
Browse our 0 Formula boats listings and learn more about Formula, the company that built them
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Formula Buyer's Guides
(1 guide)Updated 1 January 2025 · By Hulls.io Editorial
About Formula
Formula Boats is one of the most established premium sport boat and cruiser builders in the United States — a company that has been manufacturing fibreglass boats continuously since 1962 and remains family-owned through Thunderbird Products in Decatur, Indiana. The brand occupies a distinctive position in the market: above mainstream builders like Sea Ray, Chaparral, and Four Winns in fit-and-finish, but below ultra-premium names like Chris-Craft and Cobalt in price — offering what many experienced boaters consider the best balance of performance, quality, and value in the American sport boat market.
The company's origins trace to Miami in the early 1960s, when Formula was among the first builders to embrace fibreglass construction for high-performance sport boats. After acquisition by Thunderbird Products in 1976, the company relocated to Decatur, Indiana, where it built a modern manufacturing facility and began a long, steady evolution from pure performance boats toward versatile, family-friendly sport boats and cruisers with a performance edge.
Formula's current range spans from approximately 24 to 45 feet across three primary categories: the FX series (pure sport boats and bowriders), the CBR series (crossover bowriders that blend open-bow versatility with cuddy cabin practicality), and the PC/SS cruiser line. The CBR — Crossover Bowrider — has become Formula's signature innovation, offering the social space and open-air experience of a bowrider with the overnight capability and weather protection of a cuddy cabin. The 330 CBR sits at the heart of this range and has become one of Formula's best-selling and most recognised models.
What distinguishes Formula from mainstream builders is the construction quality. Formula boats use hand-laid fibreglass rather than chopper-gun application, with vinyl ester resin in the outer skin for osmotic blister resistance, marine-grade stainless steel hardware, and interior woodwork and upholstery that consistently exceeds the segment standard. The company is vertically integrated — building its own hulls, decks, upholstery, and many hardware components in-house — which provides quality control that outsourced manufacturing cannot match.
On the used market, Formula boats hold their value well. The combination of premium construction, limited production volume relative to major brands, and a loyal owner community supports resale values that typically exceed Sea Ray, Chaparral, and Bayliner at equivalent age and condition. The Indiana manufacturing base and Thunderbird Products' financial stability provide confidence in long-term parts availability and warranty support.
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Brand Value & Market Position
Hulls.io tracks value retention data for 2 Formula models based on 99 historical listings.
Market insight based on asking prices from 99 tracked listings analysed by Hulls.io (April 2026 data). Figures reflect asking prices, not final sale prices.
Retention curves are shown for models with sufficient year-over-year listing density in our dataset.
Formula Models: Year-by-Year Market Data
Median asking prices by model year, based on 99 tracked listings. Data from April 2026.
| Model Year | Median Price | Listings |
|---|---|---|
| 2006 | £131,947 | 13 |
| 2004 | £168,119 | 7 |
| 2001 | £109,095 | 5 |
| Model Year | Median Price | Listings |
|---|---|---|
| 2004 | £113,646 | 9 |
| 2001 | £73,926 | 6 |
| 2000 | £93,751 | 6 |
Frequently Asked Questions About Formula
Where are Formula boats built?
Formula boats are built in Decatur, Indiana, at the Thunderbird Products manufacturing facility. The company was originally founded in Miami, Florida in 1962 and relocated to Indiana after the Thunderbird Products acquisition in 1976. All Formula boats are built in the United States with hand-laid fibreglass construction.
What types of boats does Formula build?
Formula builds premium sport boats, bowriders, crossover bowriders (the CBR series), and sport cruisers ranging from approximately 24 to 45 feet. The brand is best known for its CBR (Crossover Bowrider) series, which combines the open-bow social space of a bowrider with the overnight capability of a cuddy cabin. The FX series covers pure sport boats and the PC/SS line covers sport cruisers.
How does Formula compare to Sea Ray?
Formula is positioned above Sea Ray in build quality and price, with hand-laid fibreglass construction versus Sea Ray's mix of hand-lay and production processes. Formula is family-owned through Thunderbird Products, while Sea Ray is part of Brunswick Corporation. Formula generally holds its value better on the used market and offers a more premium interior finish, but Sea Ray has a larger dealer network and broader model range. Formula appeals to buyers seeking higher quality than mainstream production, while Sea Ray offers more accessibility and selection.
Do Formula boats hold their value?
Formula boats hold their value well relative to the broader sport boat market. The premium construction quality, limited production volume, loyal owner community, and American-made craftsmanship support resale values that typically exceed mainstream brands like Sea Ray, Chaparral, and Bayliner at equivalent age and condition. A well-maintained Formula bowrider or CBR will typically retain 70-80% of its value after 3-5 years.
What is a Formula CBR?
CBR stands for Crossover Bowrider — Formula's signature innovation that blends the social space and open-air experience of a traditional bowrider with the overnight capability and weather protection of a cuddy cabin. The CBR features a convertible cabin area forward that can function as an open bow for entertaining or convert to an enclosed cabin with berth for overnight stays. The Formula 330 CBR is the best-known model in this range.