Granfort Buying Comparison Guide
Granfort 370 GTX vs NX 370 HT Sport Coupe
Granfort 370 GTX vs NX 370 HT Sport Coupe
| NX 370 HT identity | Hardtop coupe cruiser |
| Granfort 370 GTX identity | Open sport cruiser |
| NX published fuel / water | 159 gal fuel · 66 gal water |
| Granfort published fuel / water | 222 gal fuel · 38 gal water |
| Best decision lens | Protected comfort vs open performance |
$439K
50mph
222gal
11'6"
10yr
Reader framing
This guide is for buyers asking a sharper question: which boat would I actually want to own first?
NX should be respected for hardtop comfort and feature content. But the decision should not be led by the longest equipment list. It should be led by the ownership equation: performance, range, space, warranty confidence, and how the boat makes you feel every time you leave the dock.
The single most important number in this comparison is 222 gallons vs 159 gallons of fuel. Granfort carries 63 more gallons of fuel, while NX carries 28 more gallons of fresh water. That tells the story clearly: Granfort is the stronger coastal-running, open-water sport cruiser; NX leans more toward sheltered comfort at anchor and longer stays aboard.
Buyer education first
Before comparing features, decide what kind of cruiser you actually want.
The NX 370 HT Sport Coupe and the Granfort 370 GTX are not simply two 37-foot boats. They are two different answers to the same buyer question.
The NX 370 HT Sport Coupe is built around a hardtop identity. Its official specification lists 35’11” LOA, 38’2″ LOA with outboards, 10’8″ beam, 24″ draft, 19,400 lb loaded weight, 159 gallons of fuel, 66 gallons of fresh water, and 16 day / 4 night passenger capacity. Its engine options include twin 300, 320, 350, and 400 hp configurations.
The Granfort 370 GTX is built around an open sport-cruiser identity. Published references list 11’6″ beam, 2 x 111 gallons of fuel, 38 gallons of water, 14-person capacity, and a 50 mph published sea-trial result with twin 400 hp outboards. The Granfort experience is more open, more connected to the water, and more focused on performance and social flow.
Important category distinction: NX = hardtop coupe comfort, weather protection, and freshwater capacity. Granfort = open sport-cruiser performance, wider beam, more fuel, and stronger warranty scope. Buy the boat whose mission matches how you actually boat most of the time.
Where Granfort wins
More fuel. Wider beam. Faster published sea trial. The stronger first-choice ownership equation.
Granfort’s strongest arguments are simple and buyer-relevant: 222 gallons of fuel versus NX’s 159 gallons, 11’6″ beam versus NX’s 10’8″, a 50 mph published sea-trial result, and a 10-year structural warranty that covers both hull and deck.
More importantly, those numbers translate into a stronger ownership feeling. Granfort is the boat that feels more alive leaving the marina, more open at anchor, more connected to the water, and more confidence-building for coastal runs. The cockpit, bow, stern, grill area, bar-style stools, and convertible lounge create a social environment that brings people toward the water instead of enclosing them away from it.
For U.S. buyers, the published ABYC and U.S. Coast Guard compliance language in Granfort materials, combined with the 10-year hull-and-deck structural warranty, gives Granfort a trust story that supports the emotional decision. It is not only the exciting choice. It is the more complete sport-cruiser decision.
What NX 370 HT does well
Hardtop protection, 66 gallons of water, and a feature-loaded comfort profile.
The NX 370 HT Sport Coupe deserves credit for a very clear identity. Its hardtop design gives daily weather protection, a more sheltered cockpit feel, and a coupe-style profile that many buyers prefer for sun, rain, and marina comfort.
NX also wins the freshwater comparison. Its 66-gallon freshwater capacity gives it 28 gallons more than Granfort’s 38 gallons, which matters for buyers who prioritize showers, galley use, and longer stays aboard. BoatTEST also describes the NX370 HT Sport as a mid-size cruiser with fine fit and finish, practical amenities, and extensive customization options.
Published performance data
Performance comparison — use the numbers, but read the engine context.
The Granfort 370 GTX has a published 50 mph sea-trial result with twin 400 hp outboards. Bombarco’s NX 370 HT Sport test reported 40 mph, 8 seconds to plane, 0 to 15 knots in 8.5 seconds, and 0 to 25 knots in 9.5 seconds, but that specific test used twin 300 hp gasoline engines. NX also offers twin 400 hp configurations, so the fair takeaway is not “NX can only do 40 mph.” The fair takeaway is that Granfort currently has the cleaner published 50 mph performance story, while NX’s published third-party test was on lower horsepower.
Granfort 370 GTX
Granfort 370 GTX · published sea trial
| Published test engines | 2×400 hp |
| Top speed | 50 mph |
| 0 to plane | 7.5 seconds |
| 0 to 29 mph | 6.8 seconds |
| Cruise fuel burn | ~13.21 GPH |
| Fuel capacity | 222 gal |
NX 370 HT Sport Coupe
NX 370 HT Sport · official specs + Bombarco test
| Official engine options | 2×300 to 2×400 hp |
| Bombarco test engines | 2×300 hp gasoline |
| Top speed in that test | 40 mph |
| 0 to plane | 8.0 seconds |
| 0 to 25 knots | 9.5 seconds |
| Fuel capacity | 159 gal |
Granfort 370 GTX
Granfort USA — rising in the luxury boating market. Those ahead of the curve choose it.
A serious discovery brand for buyers who compare carefully — and want to be ahead of the curve.
01
Crafted with precision, backed by a 10-year structural warranty.
02
U.S.-prepared, reliable, and built for discerning owners.
03
Book your personal test and experience Granfort firsthand.
The builder behind Granfort
Fibrafort — decades of manufacturing experience behind Granfort. 35 years. 18,000+ boats. 44 countries.
For buyers asking “Can I trust Granfort?”, the answer begins with the factory behind the boat.
Fibrafort was founded in Brazil in 1990 and has produced boats across more than three decades. It is a high-volume manufacturer with international market experience. That background matters because a 37-foot cruiser is not only a design purchase; it is a manufacturing-confidence purchase.
35+
18,000+
44
U.S.
Manufacturing pedigree
Porsche Consulting-advised process improvements. A rare manufacturing differentiator in this class.
Fibrafort has publicly described its work with Porsche Consulting as a way to improve production processes, operational efficiency, quality, safety, and adaptability to market demand. Porsche-related materials and Fibrafort references support the safest phrasing: Porsche Consulting advised process improvement; it did not “design” the boat.
For a Granfort buyer, the relevance is practical. Better process discipline can support more consistent production, fewer quality surprises, and a more reliable ownership experience.
Fibrafort + Porsche Consulting · Operational improvement
Porsche Consulting-advised production process improvements
Lifestyle decision
NX protects you from the elements. Granfort connects you to the water.
NX’s strongest lifestyle message is comfort: hardtop protection, freshwater capacity, windows, enclosed-feel cockpit, and customization options. It is an attractive answer for buyers who want shade, shelter, and a more lounge-like experience.
Granfort’s strongest lifestyle message is openness: the social cockpit, open bow, stern balcony feeling, grill table, bar-style seating, convertible stern lounge, and dry shower layout. It is designed to make the water, the movement, and the social experience feel central to ownership.
Construction and warranty confidence
The warranty is the builder's confidence statement. Compare scope, not only duration.
Granfort 370 GTX
10-YEAR STRUCTURAL
NX 370 HT Sport Coupe
10-YEAR HULL
Ownership Cost Comparison
The real equation continues after the purchase
The true cost of ownership goes far beyond the purchase price. Fuel capacity, operating efficiency, warranty protection, maintenance confidence, and long-term usability all influence what a boat costs to own over several seasons.
The Granfort 370 GTX builds a strong ownership case around its larger 222-gallon fuel capacity, wider 11’6″ beam, lighter published platform, 50 mph published sea-trial performance, ABYC and U.S. Coast Guard compliance language in published materials, Porsche Consulting-advised manufacturing process improvements, and a 10-year structural warranty covering both hull and deck. Together, these factors support a value proposition centered on performance, confidence, and long-term ownership assurance.
The NX 370 HT Sport Coupe offers a different ownership proposition. Its strengths include hardtop weather protection, 66 gallons of fresh water, 16-day/4-night capacity, and a comfort-focused layout designed for longer stays aboard and more sheltered cruising. Buyers who prioritize onboard comfort, freshwater capacity, and coupe-style protection may find those benefits worth the trade-off in fuel capacity and open-air performance.
Ultimately, the ownership decision comes down to priorities. Buyers seeking an open sport-cruiser experience, greater fuel reserves, stronger published performance credentials, and broader structural warranty coverage may view the Granfort as the stronger long-term ownership value. Buyers who place greater emphasis on hardtop protection, freshwater capacity, and comfort-oriented cruising may prefer the NX’s approach to ownership.
Full specification table
Granfort 370 GTX vs NX 370 HT Sport Coupe — the numbers that matter.
Use this table as a buyer’s reference. Prices and configurations change by dealer, options, engines, and market timing; verify all final figures with current written quotes before signing.
| Category | Granfort 370 GTX | NX 370 HT Sport Coupe | Buyer Meaning |
|---|---|---|---|
| Price reference | Starting at $439,900 public Granfort reference; current U.S. listings may vary | Public U.S. listings around $499,900–$499,999 observed; verify current dealer quote | Granfort has the lower published starting reference; both boats must be compared by actual written build sheet. |
| Primary identity | Open sport cruiser | Hardtop coupe cruiser | This is the real decision: open-water connection vs protected hardtop comfort. |
| LOA | 36’2″ BoatTEST / commonly marketed as 37 ft | 35’11” official; 38’2″ with outboards | Both are effectively in the same buyer size class; NX publishes a longer outboard LOA figure. |
| Beam | 11’6″ | 10’8″ official / 10’6″ BoatTEST | Granfort is wider, which matters for cockpit space and at-anchor feel. |
| Weight | 11,245 lb dry weight BoatTEST; 13,500 lb with engines referenced in Granfort materials | 19,400 lb loaded weight official | Different weight definitions are used, but NX is clearly the heavier hardtop platform. |
| Published top speed | 50 mph · Granfort sea trial with twin 400 hp | 40 mph · Bombarco test with twin 300 hp | Granfort has the cleaner 50 mph published story. NX should be retested or confirmed with twin 400 hp before claiming equivalent speed. |
| Engine options | Up to twin 400 hp outboards | Official options include twin 300, 320, 350, and 400 hp | NX offers multiple power configurations; performance depends heavily on engine choice. |
| Fuel capacity | 2 × 111 gal = 222 gal | 159 gal / 600 L | Granfort carries 63 more gallons, supporting the longer-running open cruiser argument. |
| Fresh water | 38 gal | 66 gal | NX carries 28 more gallons, supporting the comfort-at-anchor and extended-stay argument. |
| Passenger capacity | 14 people | 16 day / 4 night | NX has the higher published day capacity; both sleep four overnight in the core comparison. |
| Draft | 1’11” BoatTEST / 2.2 ft reference | 24″ | Both are shallow-draft outboard-friendly boats; difference is minor. |
| Warranty scope | 10-year structural hull + deck claim | 10-year hull warranty language | Granfort’s advantage is broader structural scope, not merely duration. |
| U.S. compliance language | ABYC + U.S. Coast Guard compliance/certification language published in Granfort materials | No equivalent public ABYC / USCG statement found in reviewed public NX pages | For U.S. buyers, written compliance language can help with confidence, financing, insurance, and resale discussions. |
| Manufacturing story | Fibrafort background + Porsche Consulting-advised process improvements | NX Boats Brazilian hardtop/cruiser design identity | NX has design personality; Granfort has the stronger process-improvement story. |
Six criteria a serious buyer checks before signing
Use these six criteria to make a smart decision.
01
Mission fit
02
Warranty scope
03
Certification language
04
Fuel vs water
05
Performance proof
06
Ownership value
What each boat is best for
Choose based on your actual mission — not only first impressions.
Choose the NX 370 HT Sport Coupe if you prioritize:
- Hardtop coupe styling and protected cockpit comfort
- 66 gallons of freshwater capacity for longer stays aboard
- 16-person day capacity and four-person overnight capacity
- A feature-loaded boat with extensive customization options
- Shade, shelter, and a more enclosed lounge-like experience
- A Brazilian cruiser with a clear hardtop identity
Choose the Granfort 370 GTX if you prioritize:
- Open sport-cruiser feel and a stronger connection to the water
- 222 gallons of fuel for a more confident coastal-running profile
- 11’6″ beam and generous cockpit/social flow for family and guests
- 50 mph published sea-trial performance and a more exciting ownership feel
- 10-year structural warranty covering hull and deck
- ABYC + U.S. Coast Guard compliance language in published materials
- Porsche Consulting-advised process improvement story behind the build
- A sport cruiser that feels like the smarter first boat to test, compare, and own
The Granfort advantage beyond specs
Functional luxury is what turns the comparison into preference.
The buyer should not leave the article thinking only about numbers. The buyer should understand how Granfort improves the ownership experience.
Granfort’s value is in the complete package: dry shower comfort, cabin usability, open social cockpit, grill table, convertible stern lounge, aft balcony feeling, open-air design, 37-foot scale, and a warranty/certification story that supports confidence. These are the features that help the buyer move from “I am considering Granfort” to “Granfort may be my first choice.”
Final verdict
NX wins the hardtop comfort argument. Granfort wins the ownership equation.
The NX 370 HT Sport Coupe is a credible, feature-rich, hardtop cruiser. It deserves consideration from buyers who want protected cockpit comfort, strong freshwater capacity, a coupe-style profile, 16-person day capacity, and a highly customizable Brazilian cruiser.
But for buyers who want the boat to feel alive on the water, the Granfort 370 GTX becomes the stronger first-choice decision. It is wider, carries more fuel, has the cleaner 50 mph published sea-trial story, offers a more open cockpit-to-water connection, and is supported by a 10-year structural warranty covering both hull and deck.
Add Fibrafort’s manufacturing scale, Porsche Consulting-advised process improvements, and Granfort’s published U.S. compliance language, and the conclusion becomes clear: Granfort is not just another boat to compare after NX. It is the sport cruiser serious buyers should experience first.
NX gives you the hardtop coupe experience. Granfort gives you the ownership equation: performance, range, space, warranty confidence, and open-air luxury in one 37-foot sport cruiser.
Ready to compare from the helm?
The Granfort 370 GTX is available for private showings and sea trials in Florida. Experience the open sport-cruiser layout, 222-gallon fuel capacity, 10-year hull-and-deck structural warranty, and published 50 mph performance firsthand.
