Boston Whaler 255 Conquest 2003 boat specs
Boston Whaler
Boston Whaler 255 Conquest 2003
2003
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VS
Boston Whaler 280 Dauntless 2023 boat specs
Boston Whaler
Boston Whaler 280 Dauntless 2023
2023
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Boston Whaler 255 Conquest 2003 vs Boston Whaler 280 Dauntless 2023 — Same Brand, Different Boat

The Boston Whaler 255 Conquest 2003 vs Boston Whaler 280 Dauntless 2023 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.

The power gap is worth calling out. Rated to 650 hp, the Boston Whaler 255 Conquest 2003 has a 300-hp advantage over the Boston Whaler 280 Dauntless 2023's 350-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 15 gal and 16 gal — so range won't be a tiebreaker here.

Both boats are rated for 8 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: Performance buyers should lean toward the Boston Whaler 255 Conquest 2003 and its 650-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Boston Whaler 280 Dauntless 2023 with its 350-hp rating is the more economical daily driver.
Measurements / Dimensions
Length overall - Detail27.00 ft
Length overall - Detail28.80 ft
Length - Feet27
Length - Feet28.8
Length overall - Meters8.23
Length overall - Meters8.78
Length overall - Inches324
Length overall - Inches346
Beam8.12 ft
Beam9.00 ft
Beam - Meters2.47
Beam - Meters2.74
Beam - Inches97
Beam - Inches108
Draft [max] - Detail1.40 ft
Draft [max] - Detailnot available
Draft [max] - Meters0.43
Draft [max] - Metersnot available
Draft [max] - Inches17
Draft [max] - Inchesnot available
Draft Minnot available
Draft Min1.60 ft
Engine and Drivetrain
Fuel tank capacity - Gal15
Fuel tank capacity - Gal16
Fuel tank capacity - Liters567.81
Fuel tank capacity - Liters605.67
Engine makeMecury
Engine makeMercury
Horsepower650 hp
Horsepower350 hp
Fuel typeGas
Fuel typeGas
Drive typeoutboard
Drive typeoutboard
Engine modelnot available
Engine modelL6 DTS Black Verado
Engine 2 Engine Makenot available
Engine 2 Engine MakeMercury
Engine 2 Engine Modelnot available
Engine 2 Engine ModelL6 DTS Black Verado
Engine 2 Horsepowernot available
Engine 2 Horsepower350 hp
Engine 2 Fuel Typenot available
Engine 2 Fuel TypeGas
Engine 2 Drive Typenot available
Engine 2 Drive Typeoutboard
Operational Info
Sleeping capacity2
Sleeping capacitynot available
Cabins1
Cabinsnot available
Head1
Headnot available
Water capacity2
Water capacity18
Boat typePower
Boat typePower

Boston Whaler 255 Conquest 2003 vs Boston Whaler 280 Dauntless 2023 — Common Questions

Which is the larger boat — the Boston Whaler 255 Conquest 2003 or the Boston Whaler 280 Dauntless 2023?
The Boston Whaler 280 Dauntless 2023 is the longer of the two at 28,8 feet overall. The Boston Whaler 255 Conquest 2003 comes in at 27,0 feet, making it roughly 1,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which boat can handle a bigger outboard?
The Boston Whaler 255 Conquest 2003 is rated to a maximum of 650 hp, giving it the larger power ceiling. The Boston Whaler 280 Dauntless 2023 tops out at 350 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Boston Whaler 255 Conquest 2003 is Coast Guard rated for 8 passengers, while the Boston Whaler 280 Dauntless 2023 is certified for 8. 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 Boston Whaler 280 Dauntless 2023 measures 108" wide, compared to 97" for the Boston Whaler 255 Conquest 2003. 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 Boston Whaler 255 Conquest 2003 and Boston Whaler 280 Dauntless 2023?
Both boats carry similar fuel loads — 15 gallons and 16 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Boston Whaler 255 Conquest 2003 and Boston Whaler 280 Dauntless 2023 from the same manufacturer?
Yes — both the Boston Whaler 255 Conquest 2003 and the Boston Whaler 280 Dauntless 2023 are built by Boston Whaler. 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.