Granfort 370 GTXvs.Regal 33 XO
Two different sizes, two honest engine packages — what does the extra foot, beam, and horsepower actually cost?
This guide compares the Granfort 370 GTX against the Regal 33 XO, one of the best-known names in American express cruisers — family-owned since 1969, backed by a genuine Lifetime Limited Structural Hull Warranty, and a multiple-time J.D. Power Customer Satisfaction Award winner. Unlike a same-power matchup, these two factory tests were not run on equal horsepower: Granfort's sea trial used twin 400 HP Mercury Verado outboards (800 HP total), while Regal's factory performance test used twin 300 HP Yamaha F300 outboards (600 HP total). We've kept that difference visible throughout rather than hiding it — and it's still worth the comparison, because Granfort's published starting price undercuts Regal's own published MSRP on a larger, more powerful boat.
This guide is for buyers who want to know what a smaller engine and a longer American heritage actually get you.
Regal Marine Industries is one of the most established family-owned boatbuilders in America — founded in 1969 by Paul and Carol Kuck in Orlando, Florida, still run by the Kuck family, with more than 75,000 boats built and multiple J.D. Power and Associates Customer Satisfaction Awards to its name. The 33 XO carries that heritage into a walk-around outboard express cruiser: trim-up outboards for easy beach access, a slide-out UltraLounge that extends cockpit seating by 11 inches, and an available PowerTower. None of that is in dispute.
What's easy to miss is that Regal, unlike some heritage builders, does publish pricing — its 2024 model-year 33 XO carries a $477,400 MSRP, and current listings across major marketplaces run roughly $227,000 to $549,727, averaging near $336,400 (a range that blends new boats with older, lower-powered used models back to 2018). A fully loaded Granfort 370 GTX starts at a published $439,900 — cheaper than Regal's own new-model MSRP, on a boat that's roughly two to three feet longer, about 14 inches wider in beam, and running 200 more combined horsepower.
If your priority is a proven, JD Power-winning American builder with a genuinely longer hull warranty and real-world fuel efficiency, the Regal deserves serious consideration. If your priority is more boat — more beam, more horsepower, more cabin — at a starting price below Regal's own MSRP, the Granfort is hard to overlook.
Buyer education first
Before comparing features, understand what you are actually comparing.
This is not simply Granfort versus Regal. It is a larger, more powerful sport cruiser versus a lighter, more fuel-efficient express cruiser from a 57-year-old American builder — and both are twin-outboard boats with published pricing, which is what makes an honest comparison possible in the first place.
The Regal 33 XO is built around walk-around, beach-friendly day and overnight boating: trim the outboards up and back the transom right onto the sand, slide the UltraLounge back for 11 extra inches of cockpit seating, and convert the cabin settee into a queen berth for the occasional night aboard. Regal's twin 300 HP Yamaha F300 package (600 HP total, as factory-tested) is noticeably lighter on fuel than a bigger V10 rig — a real, legitimate selling point for owners who prioritize efficiency and lower running costs over outright horsepower.
The Granfort 370 GTX is built around a different value proposition: a wider 11'6" beam, an enclosed dry head, twin 400 HP Verado outboards (800 HP total, as factory-tested), a published 10-year structural warranty, ABYC/USCG-certified construction — and a starting price that undercuts Regal's own published MSRP despite being the larger, more powerful boat of the two.
Simple decision frame: Choose the Regal if a proven, lifetime-warrantied American builder and meaningfully better fuel economy matter more to you than raw size and horsepower. Choose the Granfort if you want more beam, more power, and more cabin than a 33 XO, for less money than Regal's own new-model MSRP.
Different horsepower, different hull size — and two genuinely different ownership arguments.
Regal earns its efficiency and warranty advantages honestly. Granfort earns its size, power, and price advantages just as honestly. Neither brand needs the other one weakened to make its case.
More beam, more horsepower, a lower starting price.
The bigger-boat-for-less argument.
Granfort wins on scale: a wider cockpit, an 800 HP twin-Verado package, and a published starting price that's still below Regal's own new-model MSRP — despite being the larger boat.
- 11'6" beam vs Regal's 10'4" (14% wider)
- 800 HP total (twin 400 Verado) vs Regal's 600 HP tested
- $439,900 starting — $37,500 below Regal's $477,400 MSRP
- 10-year structural warranty · hull + deck, published
A lifetime warranty and a lot more mileage per gallon.
The proven-efficiency argument.
Regal is strong exactly where a 57-year family-owned American builder with a JD Power track record should be strong: real fuel efficiency, brisk acceleration, and a warranty that's measured in a lifetime, not a decade.
- 0.95 mpg at wide-open throttle — vs Granfort's 0.69 mpg
- 7.1 sec 0–30 mph — quick for a 600 HP twin-outboard cruiser
- Lifetime Limited Structural Hull & Deck Warranty, published
- 57 years family-owned · 75,000+ boats built · multiple J.D. Power awards
Different horsepower, so the numbers need context — not just a headline speed.
Granfort's figures come from its factory sea-trial report for hull #FK370GTX-67, twin 400 HP Mercury Verado outboards (Aug 2024). Regal's figures come from its own factory performance-test sheet for the 33 XO, twin 300 HP Yamaha F300UCA outboards, dated Feb 3, 2017. That's a real 200 HP gap — keep it in view as you read the rest of this section.
Granfort 370 GTX
Factory sea trial · hull #67| Test date / conditions | 7-person, 80% fuel load |
| Engines | 2 × 400 HP Mercury Verado V10 |
| Boat weight, no engines | 13,613 lb |
| Top speed @ 6,410 RPM | 51.1 mph |
| Fuel capacity | 222 gal |
| Fuel burn @ WOT | 74.0 GPH |
| Efficiency @ WOT | 0.69 mpg |
| Best-economy range | 209 mi @ 33.8 mph |
Regal 33 XO
Factory performance test · 2/3/2017| Test date / conditions | Factory performance test, 2/3/2017 |
| Engines | 2 × 300 HP Yamaha F300UCA |
| Boat weight, as tested | 12,150 lb (11,500 lb dry) |
| Top speed @ 6,000 RPM | 49.9 mph |
| Fuel capacity | 150 gal |
| Fuel burn @ WOT | 52.2 GPH |
| Efficiency @ WOT | 0.95 mpg |
| Best-economy range | 201 mi @ 37.5 mph |
| RPM | Granfort MPH · GPH | Regal MPH · GPH |
|---|---|---|
| 1,000 | — | 5.7 mph · 2.4 GPH |
| 1,500 | — | 7.9 mph · 4.1 GPH |
| 2,000 | 9.1 mph · 10.1 GPH | 9.1 mph · 6.9 GPH |
| 2,500 | 10.4 mph · 12.6 GPH | 10.9 mph · 10.8 GPH |
| 3,000 | 12.2 mph · 18.0 GPH | 14.7 mph · 13.9 GPH |
| 3,500 | 15.6 mph · 24.1 GPH | 20.1 mph · 17.3 GPH |
| 4,000 | 19.6 mph · 31.8 GPH | 30.5 mph · 23.3 GPH |
| 4,500 | 33.8 mph · 35.9 GPH | 37.5 mph · 28.0 GPH |
| 5,000 | — | 40.2 mph · 39.0 GPH |
| 5,500 | 43.8 mph · 58.2 GPH | 44.9 mph · 51.7 GPH |
| 6,000 | — | 49.9 mph · 52.2 GPH |
| 6,410 (Granfort WOT) | 51.1 mph · 74.0 GPH | — |
Granfort figures: factory performance-test report, hull FK 370 GTX #67, twin Mercury Verado V10 400 HP, 19" pitch three-blade stainless prop, GPS-measured, 7-person / 80% fuel test condition, dated 23 Aug 2024 (Ricardo Bedin). Regal figures: factory performance-test sheet for the Regal 33 XO, twin Yamaha F300UCA 300 HP, Saltwater Series II SDS prop (17" pitch), tested 2/3/2017. Dashes mark RPM points not tested on that boat.
200 fewer horsepower, and Regal still lands within 1.2 mph of Granfort's top end.
Regal's MPG figures are published directly on its factory performance sheet; Granfort's MPG is computed here as MPH ÷ GPH from the same sea-trial data used elsewhere in this guide, for a like-for-like comparison. Range estimates assume 100% of each boat's rated fuel capacity (Granfort 222 gal, Regal 150 gal) at the tested burn rate — a theoretical maximum, not a real-world reserve-included figure.
The builder behind the boat
Brazilian production scale meets a 57-year Florida family business.
Fibrafort gives Granfort manufacturing scale before the comparison even begins. Granfort is the U.S. export brand of Fibrafort, a Brazilian manufacturer founded in 1990 with more than 35 years of boatbuilding experience, 18,000+ boats produced, and exports to more than 40 countries. Fibrafort's production processes are advised by Porsche Consulting — covering development, logistics, material planning, and lean manufacturing — with published results including material costs reduced 10%, extra daily parts orders cut 90%, and overtime reduced 48%.
Regal brings a different, equally real kind of scale. Founded in 1969 by Paul and Carol Kuck in Orlando, Florida, Regal Marine Industries remains a family-owned business run by the Kuck family today, operating from a manufacturing campus of more than 700,000 square feet. Regal has built more than 75,000 boats over 57 years, holds ISO certification (since 2002), and has repeatedly earned J.D. Power and Associates awards for "Highest in Customer Satisfaction" across multiple boat categories. Its patented FasTrac hull, introduced in 1995, remains a signature design across the current lineup.
A proven walk-around beach boat, or a wider, more powerful cruiser at a lower starting price? The right choice depends on how you actually use it.
Built to trim up and go ashore
Regal's lifestyle is built around beach-friendly, walk-around day boating: trim the outboards up and back right onto the sand, slide the UltraLounge back for 11 extra inches of cockpit seating, and run a Garmin Helm Master EX setup with autopilot and joystick docking — all backed by a builder with more than five decades of continuous, JD Power-recognized production.
Built for the whole weekend, at a price you know upfront
Granfort's lifestyle is different: coastal cruising, overnight stays, an enclosed dry head, a social cockpit, and a wider stance at anchor — backed by a published 10-year structural warranty, at a starting price below Regal's own new-model MSRP.
Both builders put their warranty in writing. Regal's simply runs longer.
This isn't a case of one brand hiding behind "ask your dealer" — both Granfort and Regal publish their structural warranty terms. The real difference between them is duration, and on that measure, Regal has the stronger published claim.
10-Year Structural
Hull + deck both covered · published as ABYC + USCG compliant · published in Granfort materials · a strong, verifiable term for a newer brand entering the U.S. market.
Lifetime Structural
Lifetime Limited Structural Hull & Deck Warranty to the original owner, plus a transferable 5-year term for a second owner, a 5-year hull blister warranty, and a general parts warranty — all published in Regal's factory warranty documentation.
Both prices are public. The real question is what each dollar actually buys.
Unlike a heritage builder that keeps pricing behind a dealer phone call, Regal publishes its numbers: a $477,400 MSRP for the 2024 model-year 33 XO, with real market listings currently ranging from about $227,000 (older, lower-powered used boats) up to $549,727 (new), averaging near $336,400 across model years 2018–2027. That wide range partly reflects Regal's broader engine and trim-level options over the years, including the lighter twin-300 Yamaha package tested in this guide.
Granfort's starting price of $439,900 undercuts Regal's own new-model MSRP by roughly $37,500 — on a boat that's several feet longer, 14 inches wider in beam, and running 200 more combined horsepower. The trade a buyer is actually weighing isn't "expensive vs. cheap" — both builders publish real numbers — it's size and power (Granfort) against efficiency and warranty depth (Regal), at roughly comparable price points.
Granfort 370 GTX vs Regal 33 XO — the numbers serious buyers should review.
Use the table as a practical reference. Highlighted rows show where the size/power gap between these two boats is most visible.
| Category | Granfort 370 GTX | Regal 33 XO | Buyer Meaning |
|---|---|---|---|
| Boat category | Dedicated 37 ft sport cruiser · overnight primary | 34 ft walk-around express cruiser · day-focused, occasional overnight | Different sizes and missions — Granfort is built as the larger, more overnight-capable boat. |
| Starting / published price | $439,900 starting · $546,800 fully loaded, published | $477,400 MSRP (2024 model) · market listings $227,000–$549,727 (avg. ~$336,400) | Granfort's entry price undercuts Regal's own new-model MSRP despite being the larger boat. |
| LOA | 37 ft 0 in published · 36 ft 2 in per factory sea-trial hull measurement | 33 ft 11 in | Granfort is roughly 3 feet longer. |
| Beam | 11 ft 6 in published | 10 ft 4 in | Granfort is about 14 inches wider — more cockpit and interior volume. |
| Dry / tested weight | 13,613 lb (no engines) | 11,500 lb dry · 12,150 lb as tested | Regal is meaningfully lighter — part of why it stays close on top speed with far less power. |
| Engines tested | Twin 400 HP Mercury Verado V10 (800 HP total) | Twin 300 HP Yamaha F300UCA (600 HP total) | A real 200 HP gap — not an equal-power comparison, unlike some rival tests. |
| Top speed | 51.1 mph GPS-measured, factory sea trial | 49.9 mph, factory performance test | Remarkably close given the horsepower gap — a credit to Regal's lighter hull. |
| Fuel burn / efficiency @ WOT | 74.0 GPH · 0.69 mpg | 52.2 GPH · 0.95 mpg | Regal is meaningfully more fuel-efficient at wide-open throttle. |
| Fuel capacity | 222 gal | 150 gal | Granfort carries more fuel, consistent with its larger overall size. |
| 0–30 mph acceleration | 10.18 sec (7-person load) | 7.1 sec | Regal is noticeably quicker off the line despite less horsepower. |
| Structural warranty | 10-year structural hull + deck, published | Lifetime Limited Structural Hull & Deck Warranty, published | Regal's published warranty term is longer on paper. |
| Certification | ABYC + U.S. Coast Guard · published | ISO-certified builder (since 2002) · multiple J.D. Power Customer Satisfaction Awards | Both builders lean on published, third-party-recognized quality signals. |
| Cabin / overnight | Cabin, galley, enclosed dry head · 14 day / 4 night published | Convertible settee to queen berth, cabin head, outdoor refreshment center | Granfort's overnight capacity is formally published as larger and more cabin-focused. |
| Manufacturing pedigree | Fibrafort + Porsche Consulting-advised process improvements · 18,000+ boats built | Regal Marine / Kuck family, 57 years, 75,000+ boats built, Orlando, Florida | Both bring real manufacturing scale — Fibrafort on process discipline, Regal on longevity and volume. |
Evaluate the decision like an owner, not only like a shopper.
These six points — in the order most buyers actually work through them — help move from brand attraction to an informed decision.
Price transparency
Both builders publish real numbers here — Granfort a fixed price range, Regal an MSRP plus a wide, searchable used market. Neither requires a blind dealer call to get started.
Warranty
Regal's Lifetime Limited Structural Hull & Deck Warranty outlasts Granfort's published 10-year term. Ask any Granfort dealer whether a longer term is available before assuming 10 years is the ceiling.
Construction
Both builders have real credibility — Fibrafort on manufacturing scale and process discipline, Regal on 57 years of continuous, JD Power-recognized American production.
Performance
Regal is genuinely more fuel-efficient and quicker to plane despite 200 less horsepower — a real hull-and-weight advantage. Granfort's extra power still buys a higher absolute top speed and more reserve.
Ownership cost
Starting price, fuel burn, warranty depth, and service expectations should be part of the buying decision — and both brands give you enough published data to actually run that math.
Mission fit
This is the deciding point: a proven, efficient, lifetime-warrantied 34-footer, or a larger, more powerful 37-footer at a lower starting price. The best boat is the one sized for how you actually boat.
Choose based on your actual mission — size and power, or efficiency and warranty depth.
Proven efficiency and a lifetime warranty
- 57 years of continuous family ownership in Orlando, Florida
- Meaningfully better fuel economy on 200 less horsepower
- Quicker 0–30 mph acceleration (7.1 seconds tested)
- A Lifetime Limited Structural Hull & Deck Warranty, published
- Beach-friendly, walk-around outboard layout with UltraLounge cockpit
- A broad, well-documented used market from roughly $227,000
More boat, more power, for less than Regal's MSRP
- A wider 11'6" beam for cockpit space and stability at anchor
- 800 combined HP vs Regal's 600 HP tested — more top-end reserve
- A starting price $37,500 below Regal's own new-model MSRP
- Published 10-year structural warranty · hull + deck
- A longer 37 ft cruiser built with overnight cabin space as the primary use case
- A rising brand backed by Fibrafort's manufacturing scale
Regal builds a proven, efficient, lifetime-warrantied boat. Granfort builds a bigger, more powerful one for less money up front.
The Regal 33 XO earns its reputation honestly. On 200 less horsepower, it lands within 1.2 mph of the Granfort's top speed while burning roughly 30% less fuel at wide-open throttle, accelerates to 30 mph noticeably quicker, and carries a Lifetime Limited Structural Hull & Deck Warranty that outlasts Granfort's published 10-year term. For a buyer who values proven American manufacturing, JD Power-recognized quality, and real running-cost savings, it's a genuinely strong, well-documented choice.
But the Granfort 370 GTX makes the stronger size-and-power argument once the full picture is on the table: a published starting price of $439,900 — $37,500 below Regal's own new-model MSRP — on a boat with a wider 11'6" beam, 200 more combined horsepower, and a written 10-year structural warranty of its own. Two boats built to genuinely different scale and mission, priced within roughly $37,500 of each other at the entry point.
For buyers who want to know exactly what they're getting — more boat and more power, or proven efficiency and a longer warranty — both brands give you real numbers to make that call.
The best way to understand Granfort is to see it, walk through it, and experience it on the water.
Private showings and sea trials are available in Florida.
