Granfort Buying Comparison Guide
Granfort 370 GTX vs Sea Ray Sundancer 320 OB
What buyers need to know.
37ft
11'5"
50 mph
222 gal
10 yr
Reader framing
Before choosing between these two boats, understand the real decision.
Sea Ray gives buyers brand familiarity, U.S. dealer confidence, and a polished American cruiser experience. Granfort gives buyers a larger, wider, lighter sport cruiser with stronger value and a more open-air ownership personality.
The Sea Ray Sundancer 320 Outboard is a respected cruiser-bowrider blend: 34 ft 9 in LOA with outboards, 10 ft 7 in beam, 220 gallons of fuel, twin Mercury 350 Verado V10 outboards standard, 21° deadrise, four-person sleeping capacity, and Sea Ray’s national support ecosystem. It is a safe, familiar choice for buyers who place brand recognition and dealer coverage first.
The Granfort 370 GTX is a different proposition. It is physically larger, wider, lighter with engines, rated with twin 400 hp outboards, and built around an open sport-cruiser lifestyle. The buyer should ask one central question: am I buying the familiar brand, or am I buying the boat that gives me more physical platform, more open-air experience, and a stronger value equation?
Before comparing features one by one, it is important to understand the real decision. Many of the key equipment items are similar, so the comparison should not be reduced to a simple checklist of options. The Granfort 370 GTX should be evaluated as a larger, wider 37-foot sport cruiser with a broader ownership experience: more beam, more usable social areas, a more functional stern layout, a dry head, cabin comfort, and real weekend capability.
For buyers considering the Sea Ray Sundancer 320 Outboard, the key question is simple: if much of the equipment is comparable, which boat gives you more usable space, more stern socialization, more onboard comfort, and a stronger value equation? That is where the Granfort 370 GTX becomes a serious alternative.
Click here : Real test data. Two boats. One slider. See how they compare at every RPM — from idle to wide open throttle.
Buyer education first
Sea Ray wins familiarity. Granfort wins the larger sport-cruiser value story.
The Sea Ray Sundancer 320 Outboard combines cruiser comfort with sport-boat usability. Its three-zone concept — bow lounge, cockpit, and cabin — is easy to understand, and its warranty language gives buyers reassurance. For buyers who prioritize a familiar badge, Sea Ray remains a valid option.
Granfort, however, should win buyers who compare the actual ownership experience. When many key equipment items are similar, the decision becomes less about the checklist and more about what the platform gives back to the owner: size, beam, layout, usable social areas, stern functionality, onboard comfort, and value. The Granfort 370 GTX gives the buyer more physical boat, a wider cockpit, a stronger open connection to the water, a dry-shower weekend layout, a social aft deck, and a performance story supported by a published 50 mph sea trial.
Granfort is not trying to win only on name recognition. It is positioned to win on substance: more space, more usability, more weekend capability, and a more complete 37-foot sport-cruiser ownership experience.
Simple buying question: do you want the familiar-name choice, or do you want the larger, wider, more open 37-foot sport cruiser that gives you more usable boat, more social space, and more value for the money?
Photo Comparison
370 GTX
Sundancer
Where Granfort wins
More boat. More beam. Less weight. A stronger first-choice ownership equation.
The weight story also favors Granfort. Sea Ray’s published dry weight is approximately 14,566 lb, while Granfort’s cited weight with engines is 13,500 lb. Even allowing for normal source differences, the message is clear: Granfort gives the buyer a larger platform with a lighter published rigged weight. That matters for acceleration, fuel efficiency, handling, and the overall liveliness of the boat under power.
Granfort also offers the more compelling value equation. Sea Ray’s online configurator shows the Sundancer 320 Outboard configured around $496,500, with dealer-listed 2026 inventory often appearing higher depending on options and dealer pricing. Granfort’s published price range, from $439,900 to approximately $546,800 fully loaded, gives buyers a clearer entry point into a larger 37-foot sport cruiser.
Key Granfort advantages:
37 ft | Larger sport-cruiser platform than the Sea Ray 320 OB
11 ft 6 in beam | Nearly one foot wider
13,500 lb with engines | Larger platform with lighter cited rigged weight
Social aft deck | More open connection to the water
Dry-shower layout | Better weekend comfort onboard
What Sea Ray does well
Brand trust, Brunswick support, and one of the strongest warranty programs in the class.
Sea Ray has been building boats since 1959, and the Sundancer name carries strong recognition in the express-cruiser category. For buyers who prioritize brand familiarity, resale recognition, and national dealer support, Sea Ray offers a known and established choice.
The Sundancer 320 Outboard brings a familiar cruiser formula: twin Mercury 350 Verado V10 outboards with joystick piloting, sleeping accommodations for four, three entertainment zones, and an official 220-gallon fuel capacity. Its 21° deadrise is also a meaningful rough-water advantage compared with flatter hulls in this size range. Sea Ray’s SENTIN3L program adds 3-year bow-to-stern coverage and 10-year limited structural hull/deck coverage for the original owner.
Key Sea Ray strengths:
220 gal | Official outboard fuel capacity
21° deadrise | Strong rough-water advantage
SENTIN3L | 3-year bow-to-stern + 10-year limited structural coverage
Recognized brand | Familiar name in the express-cruiser category
Published performance test data
Use the published numbers carefully — and compare like with like.
The Sea Ray Sundancer 320 Outboard has official brochure performance guidance showing 47–49 mph wide-open throttle and 28–30 mph cruising speed. Independent reviews also exist for related Sundancer 320 variants, including the Coupe Outboard and sterndrive versions, but those should be treated as context rather than identical test matches. Granfort publishes a direct 370 GTX sea trial with a 50 mph result.
Granfort 370 GTX
Granfort 370 GTX · published sea trial
| Weight with engines | 13,500 lb |
| Engines | 2×400 HP Mercury Verado |
| Top speed | 50 mph |
| 0 to plane | 7.5 seconds |
| 0 to 29 mph | 6.8 seconds |
| Cruise fuel burn | ~ 32 GPH |
| HP : weight | 16.9 lb per HP |
Sea Ray Sundancer 320 OB
Sea Ray Sundancer 320 Outboard · official brochure + related tests
| Official dry weight | 14,566 lb / 6,607 kg |
| Standard engines | 2×350 HP Mercury Verado V10 |
| Official WOT range | 47–49 mph |
| Official cruise range | 28–30 mph |
| Fuel capacity | 220 gal / 833 L |
| AU Coupe OB cruise context | 33 GPH at 34 MPH |
| HP to weight | 20.8 lb per HP |
What the data tells you: The Sea Ray 320 OB is not slow; Sea Ray’s own brochure shows 47–49 mph. Granfort’s published 50 mph result is only slightly higher, so the stronger Granfort argument is not top speed alone. The stronger argument is platform efficiency: a larger and wider boat with lower cited rigged weight, comparable fuel capacity, higher standard horsepower in the Granfort setup, and a lower published entry price. That is what makes Granfort the first-choice sport-cruiser decision.
Granfort 370 GTX
Granfort USA — rising in the luxury boating market.
Those ahead of the curve choose it.
01
Crafted with precision, backed by a 10-year structural warranty.
02
U.S.-certified, reliable, and built for discerning owners.
03
Book your personal test and experience Granfort firsthand.
The builder behind Granfort
Fibrafort — South America’s largest boat manufacturer by units. 35 years. 18,000+ boats. 44 countries.
Granfort is the U.S. export brand connected to Fibrafort, a long-established Brazilian manufacturer with scale, export history, and documented process-improvement work.
Sea Ray has the advantage of being deeply established in the U.S. market. Granfort’s credibility comes from a different source: the manufacturing depth of Fibrafort, a builder with decades of production history and international exports. This matters because Granfort should not be judged as an unknown startup; it should be evaluated as a newer U.S. market brand backed by an experienced factory.
35+
18,000+
44
#1
Manufacturing pedigree
Porsche Consulting-advised process improvements. A rare manufacturing differentiator in this class.
Fibrafort engaged Porsche Consulting to improve how boats were developed, planned, produced, and delivered. The work focused on operational excellence: development processes, production flow, logistics, material and cost planning, purchasing, storage, and lean manufacturing practices.
The published Porsche Consulting case reported measurable gains, including material-cost reduction, fewer emergency parts orders, lower reject rates, and reduced overtime. For a Granfort buyer, the safe message is not that Porsche designed the boat; it is that the production system behind the boat benefited from documented process-improvement work.
Fibrafort + Porsche Consulting · Operational excellence
Porsche Consulting-advised production processes — measurable results
Material costs reduced 10% · emergency parts orders cut 90% · reject rate reduced · overtime down 48%. Better process control supports quality discipline and a more reliable ownership experience.
Lifestyle decision
Sea Ray’s refined cruiser identity. Or Granfort’s bigger open-air sport-cruiser experience?
Sea Ray’s strongest lifestyle argument is refinement and familiarity. The Sundancer 320 OB is polished, intuitive, and supported by a brand many buyers already trust. The optional Coupe hardtop also gives weather protection that can be attractive in Florida and coastal markets.
Granfort’s lifestyle is more open, social, and connected to the water. The wider beam, longer hull, open bow, dry shower layout, social cockpit, stern grill table, bar-style stools, and convertible stern lounge create a boat that feels built for the way people actually spend a full day — and a full weekend — on the water.
Warranty and long-term confidence
Sea Ray’s warranty is strong. Granfort’s answer is clarity plus value.
Sea Ray’s SENTIN3L warranty program is genuinely strong: 3-year bow-to-stern coverage and 10-year limited structural hull/deck coverage for the original owner. Granfort also publishes a 10-year structural warranty covering hull and deck. Therefore, Granfort should not claim a simple warranty victory over Sea Ray. The stronger, more credible argument is that Granfort combines similar structural-warranty confidence with a larger platform, lower cited rigged weight, and lower published starting price.
Granfort 370 GTX
10-YEAR STRUCTURAL
Sea Ray Sundancer 320 OB
SEA RAY SENTIN3L
Social space and cockpit personality
Sea Ray’s three-zone comfort layout. Or Granfort’s wider, longer, open-flow cockpit?
Sea Ray describes the Sundancer 320 OB around three entertainment zones: bow lounge, cockpit, and cabin. It is a refined structure for buyers who like defined areas and a polished American cruiser feel.
Granfort’s advantage is scale and flow. The extra length and nearly one foot of added beam translate into more room to move, a more social stern, and a cockpit that feels less compartmentalized. For buyers who entertain a full group for a full day, Granfort’s larger footprint and open layout make the boat feel more alive.
Side-by-side specification data — validated sources
Every important number — corrected for the outboard model.
Granfort wins on platform size, beam, cited rigged weight, open-air sport-cruiser identity, and lower published entry price. Sea Ray wins on brand recognition, national dealer support, 21° deadrise, and a very strong SENTIN3L warranty program.
| Category | Granfort 370 GTX | Sea Ray Sundancer 320 OB | Buyer Meaning |
|---|---|---|---|
| Boat category | Open 37-ft sport cruiser · overnight capable | Refined American cruiser / sport-boat blend | Sea Ray is the familiar name; Granfort is the larger open sport-cruiser value play. |
| Published / configured price context | Starting price from $439,900~ $ 546,888 full options | Sea Ray online configured price shown around $496,500; dealer inventory can be higher depending on options | Granfort gives a lower published entry into a larger platform. Always compare final dealer quotes. |
| LOA | 37 ft marketed platform / approx. 36.2 ft technical listing | 34 ft 9 in with outboards · 36 ft 4 in with outboards + anchor | Granfort is positioned as the larger sport-cruiser platform. |
| Beam | 11 ft 6 in | 10 ft 7 in | Granfort is nearly one foot wider — meaningful for cockpit space and stability at anchor. |
| Weight | 13,500 lb cited with engines · 11,245 lb dry (BoatTEST listing) | 14,566 lb / 6,607 kg official dry weight | Granfort’s cited rigged weight is still below Sea Ray’s dry weight, supporting the lighter-platform argument. |
| Fuel capacity | 222 gal / 2×111 gal – Similar Fuel Consumption | 220 gal / 833 L | Essentially comparable. Do not claim a 64-gallon Granfort fuel advantage against the outboard model. |
| Fresh water | 38 gal | 32 gal / 121 L | Granfort carries modestly more fresh water. |
| Standard power | Twin 400 hp Mercury Verado · 800 hp total | Twin 350 hp Mercury Verado V10 · 700 hp total | Granfort’s standard/current configuration carries more horsepower. |
| Top speed | 50 mph published Granfort sea trial | 47–49 mph official Sea Ray brochure range | Granfort is slightly faster, but the bigger story is size/weight/value rather than speed alone. |
| Cruise speed | Granfort sea trial cruise data published separately | 28–30 mph official brochure cruise range | Use buyer sea trial to compare real-world fuel burn at the same speed/load. |
| Deadrise | 18° | 21° | Sea Ray has the deeper-V rough-water advantage on paper. |
| Sleeping capacity | 4 overnight | 4 overnight | Both support weekend use for four. |
| Warranty | 10-year structural hull/deck coverage published by Granfort | SENTIN3L: 3-year bow-to-stern + 10-year limited structural hull/deck | Sea Ray warranty is strong. Granfort wins when warranty is combined with platform/value. |
| Certification / compliance language | Published ABYC + U.S. Coast Guard compliance language in Granfort materials | NMMA certified · U.S. market builder · Brunswick network | Both have credible U.S.-market confidence signals. Keep claims precise. |
What a serious buyer checks before signing
Six criteria that define a smart decision in this class.
01
Platform size
02
Brand confidence
03
Weight and performance
04
Fuel and range
05
Warranty
06
Ownership personality
What each boat is best for
Choose based on what you actually value — not first impressions at the dock.
Choose the Sea Ray Sundancer 320 OB if you prioritize:
- The most recognized American express-cruiser name
- Brunswick-backed national dealer and service support
- Sea Ray SENTIN3L warranty confidence
- 21° deadrise and a refined cruiser ride
- Optional Coupe hardtop/weather protection
- A polished, familiar, easy-to-resell brand story
Choose the Granfort 370 GTX if you prioritize:
- A larger sport-cruiser platform at a lower published starting price
- Nearly one foot more beam and a more open social cockpit
- A lighter cited rigged weight and 50 mph published sea-trial result
- Dry shower functionality for more comfortable weekends aboard
- Aft balcony feeling with grill table, bar-style stools, and convertible stern lounge
- 10-year structural warranty language combined with Fibrafort manufacturing depth
- Published ABYC + U.S. Coast Guard compliance language in Granfort materials
- Porsche Consulting-advised production process improvements
The Granfort 370 GTX advantage is not only about specs. It is about a more complete open-air ownership experience: wider cockpit, social stern, usable bow, dry shower, overnight practicality, and a platform that feels larger than the Sea Ray while entering at a lower published starting point.
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
Sea Ray may win on name recognition. Granfort wins on the larger, more complete sport-cruiser proposition.
The Sea Ray Sundancer 320 Outboard is a polished, respected, and well-supported American cruiser. Its brand recognition, dealer network, 21° deadrise, and SENTIN3L warranty make it a safe and credible choice. If you value the familiar Sea Ray look, feel, and brand presence above everything else, the Sundancer 320 Outboard remains a valid option.
But if you value what the boat gives you in real use, the Granfort 370 GTX becomes the stronger sport-cruiser decision. It offers a larger platform, nearly one foot more beam, lighter cited rigged weight, comparable fuel capacity, more socialization at the stern, stronger open-air social flow, a dry-shower weekend layout, a published 50 mph sea trial, and a lower published starting price.
The decision is not simply famous versus unknown. It is familiarity versus space, value, usability, and experience. Sea Ray is the familiar choice. Granfort is the choice for buyers who look carefully, compare the numbers, step aboard, and realize they can own more boat — and a more exciting open-air lifestyle — for the money.
More platform | Longer · wider · more open
Corrected value | Similar Value
First-choice logic | Space + experience + ownership equation
Ready to see the difference for yourself?
The Granfort 370 GTX is available for private showings and sea trials in Florida. Experience more boat, more warranty, and more performance — then decide.
