Sea Ray 280 Sundancer 2005 boat specs
Sea Ray
Sea Ray 280 Sundancer 2005
2005
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VS
Sea Ray 390 Sedan Bridge 2011 boat specs
Sea Ray
Sea Ray 390 Sedan Bridge 2011
2011
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Sea Ray 280 Sundancer 2005 vs Sea Ray 390 Sedan Bridge 2011 — Same Brand, Different Boat

The Sea Ray 280 Sundancer 2005 vs Sea Ray 390 Sedan Bridge 2011 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Size is the most obvious dividing line here. The Sea Ray 390 Sedan Bridge 2011 measures 40,8 feet overall (2011), giving it roughly 9,8 additional feet of deck space compared to the Sea Ray 280 Sundancer 2005 at 31,0 feet (2005). At 85 lbs and 22 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The Sea Ray 390 Sedan Bridge 2011 tops out at 375 hp. Engine specs for the Sea Ray 280 Sundancer 2005 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 1 gal and 3 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Sea Ray 390 Sedan Bridge 2011 is rated for 12 passengers, while the Sea Ray 280 Sundancer 2005 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 390 Sedan Bridge 2011 could be the deciding factor.

Bottom line: Choose the Sea Ray 390 Sedan Bridge 2011 if your priority is putting more people on the water — it handles 12 passengers and at 40,8 ft it has the deck room to back that rating up comfortably. The Sea Ray 280 Sundancer 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
MakeSea Ray
Model280 Sundancer?
Model390 Sedan Bridge
Model Year2005
Model Year2011
Measurements / Dimensions
Beam9 ft. 5 in. (2.87 m)
Beam13 ft. 0 in. (3.96 m)
Beam - Meters2.87
Beam - Meters3.96
Beam - Inches113
Beam - Inches156
Deadrise21℃
Deadrise17℃
Draft [drive up] - Detail22 in. (55.9 cm) Twin Stern: 23 in. (58.4 cm)
Draft [drive up] - Detailnot available
Draft [drive up] meters0.58
Draft [drive up] metersnot available
Draft [drive up] inches23
Draft [drive up] inchesnot available
Draft [max] - Detail39 in. (99.1 cm) Twin Stern: 39 in. (99.1 cm)
Draft [max] - DetailInboards: 40 in. (102 cm)
Draft [max] - Meters0.99
Draft [max] - Meters1.02
Draft [max] - Inches39
Draft [max] - Inches4
Weight - Detail8,500 lbs. (3,856 kg)
Weight - Detail22,000 lbs. (9,979 kg)
Weight - kg3855.53
Weight - kg9979.02
Weight - lbs.85
Weight - lbs.22
Length - Meters9.47
Length - Metersnot available
Length - Feet31
Length - Feet40.75
Length - Inches1
Length - Inchesnot available
Length overall - Detail31 ft. 1 in. (9.47 m)
Length overall - Detail40 ft. 9 in. (12.42 m)
Length overall - Meters9.47
Length overall - Meters12.42
Length overall - Inches373
Length overall - Inches489
Engine and Drivetrain
Engine/s standard496 Magnum? Bravo? III MCM Stern Drive (375 hp - 280 kw)
Engine/s standardTwin MerCruiser? 8.2S ECT Horizon with DTS
Fuel tank capacity - Detail100 gal. (378.5 l)
Fuel tank capacity - Detail300 gal. (1,135 l)
Fuel tank capacity - Liters378.54
Fuel tank capacity - Liters1135.62
Fuel tank capacity - Gal1
Fuel tank capacity - Gal3
Drive typeI/O
Drive typeInboard - Twin
Fuel typenot available
Fuel typeGas or Diesel
Horsepowernot available
HorsepowerTwin 375 hp (280 kW)
Engine maxnot available
Engine maxTwin 375 hp (280 kW)
Operational Info
Water capacity28 gal. (106 l)
Water capacity75 gal. (284 l)
Holding tank capacity - Detail28 gal. (106 l)
Holding tank capacity - Detail35 gal. (132 l)
Holding tank capacity - Liters105.99
Holding tank capacity - Liters132.49
Holding tank capacity - Gal28
Holding tank capacity - Gal35
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeSemi Displacement

Sea Ray 280 Sundancer 2005 vs Sea Ray 390 Sedan Bridge 2011 — Common Questions

Which is the larger boat — the Sea Ray 280 Sundancer 2005 or the Sea Ray 390 Sedan Bridge 2011?
The Sea Ray 390 Sedan Bridge 2011 is the longer of the two at 40,8 feet overall. The Sea Ray 280 Sundancer 2005 comes in at 31,0 feet, making it roughly 9,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 280 Sundancer 2005 or the Sea Ray 390 Sedan Bridge 2011?
For trailering, the Sea Ray 390 Sedan Bridge 2011 has the edge at 22 lbs dry weight versus 85 lbs for the Sea Ray 280 Sundancer 2005. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
What is the maximum horsepower rating for these boats?
The Sea Ray 390 Sedan Bridge 2011 has a documented max rating of 375 hp. Engine specifications for the Sea Ray 280 Sundancer 2005 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.
How many people can each boat hold?
The Sea Ray 280 Sundancer 2005 is Coast Guard rated for 9 passengers, while the Sea Ray 390 Sedan Bridge 2011 is certified for 12. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat is wider, and does it affect trailering?
The Sea Ray 390 Sedan Bridge 2011 measures 156" wide, compared to 113" for the Sea Ray 280 Sundancer 2005. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
How do the fuel tanks compare on the Sea Ray 280 Sundancer 2005 and Sea Ray 390 Sedan Bridge 2011?
Both boats carry similar fuel loads — 1 gallons and 3 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Sea Ray 280 Sundancer 2005 and Sea Ray 390 Sedan Bridge 2011 from the same manufacturer?
Yes — both the Sea Ray 280 Sundancer 2005 and the Sea Ray 390 Sedan Bridge 2011 are built by Sea Ray. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.