Sea Ray 420 Sedan Bridge 2005 boat specs
Sea Ray
Sea Ray 420 Sedan Bridge 2005
2005
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VS
Sea Ray 450 Sundancer 2013 boat specs
Sea Ray
Sea Ray 450 Sundancer 2013
2013
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Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 450 Sundancer 2013 — Same Brand, Different Boat

The Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 450 Sundancer 2013 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.

On paper these two are close siblings in the size department — Sea Ray 420 Sedan Bridge 2005 at 45,0 ft versus Sea Ray 450 Sundancer 2013 at 45,4 ft. Weight tells a clearer story for trailering families: the Sea Ray 450 Sundancer 2013 tips the scales at 27 205 lbs — 26 920 lbs less than the Sea Ray 420 Sedan Bridge 2005 at 285 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The Sea Ray 450 Sundancer 2013 tops out at 380 hp. Engine specs for the Sea Ray 420 Sedan Bridge 2005 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Sea Ray 450 Sundancer 2013 carries 292 gallons versus 35 gallons in the Sea Ray 420 Sedan Bridge 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 13 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: The Sea Ray 420 Sedan Bridge 2005 and Sea Ray 450 Sundancer 2013 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeSea Ray
MakeSea Ray
Model420 Sedan Bridge
Model450 Sundancer?
Model Year2005
Model Year2013
Measurements / Dimensions
Beam14 ft. 3 in. (4.27 m)
Beam13 ft. 2 in. (4.01 m)
Beam - Meters4.34
Beam - Meters4.01
Beam - Inches171
Beam - Inches158
Deadrise18℃
Deadrise19℃
Draft [max] - Detail44 in. (111.8 cm)
Draft [max] - DetailAxius: 38 in. (96 cm) Zeus: 46 in. (117 cm)
Draft [max] - Meters1.12
Draft [max] - Meters1.17
Draft [max] - Inches44
Draft [max] - Inches46
Weight - Detail28,500 lbs. (12,927 kg)
Weight - Detail24,362 lbs. (11,050 kg) Zeus: 27,205 lbs. (12,340 kg)
Weight - kg12927.37
Weight - kg12339.97
Weight - lbs.285
Weight - lbs.27205
Length - Meters13.84
Length - Metersnot available
Length - Feet45
Length - Feet45.42
Length - Inches5
Length - Inchesnot available
Length overall - Detail45 ft. 5 in. (13.84 m)
Length overall - Detail45 ft. 5 in. (13.84 m)
Length overall - Meters13.84
Length overall - Meters13.84
Length overall - Inches545
Length overall - Inches545
Draft [drive up] - Detailnot available
Draft [drive up] - DetailAxius: 32 in. (81 cm)
Draft [drive up] metersnot available
Draft [drive up] meters0.81
Draft [drive up] inchesnot available
Draft [drive up] inches32
Engine and Drivetrain
Engine/s standardT-Cummins MerCruiser? 6CTA 8.3M Diesel Inboards (T-430 hp - 321 kw)
Engine/s standardTwin 8.2 MAG Axius® propulsion with Bravo® IIIx
Fuel tank capacity - Detail350 gal. (1,324.8 l)
Fuel tank capacity - Detail292 gal. (1,106 l)
Fuel tank capacity - Liters1324.89
Fuel tank capacity - Liters1105.34
Fuel tank capacity - Gal35
Fuel tank capacity - Gal292
Drive typeInboard
Drive typeInboard - Twin
Engine makenot available
Engine makeMerCruiser®
Fuel typenot available
Fuel typeGas or Diesel
Horsepowernot available
HorsepowerTwin 380 php (283 kW)
Operational Info
Water capacity120 gal. (454 l)
Water capacity70 gal. (265 l)
Holding tank capacity - Detail42 gal. (159 l)
Holding tank capacity - Detail42 gal. (159 l)
Holding tank capacity - Liters158.99
Holding tank capacity - Liters158.99
Holding tank capacity - Gal42
Holding tank capacity - Gal42
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeSemi Displacement

Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 450 Sundancer 2013 — Common Questions

Which is the larger boat — the Sea Ray 420 Sedan Bridge 2005 or the Sea Ray 450 Sundancer 2013?
The Sea Ray 450 Sundancer 2013 is the longer of the two at 45,4 feet overall. The Sea Ray 420 Sedan Bridge 2005 comes in at 45,0 feet, making it roughly 0,4 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 420 Sedan Bridge 2005 or the Sea Ray 450 Sundancer 2013?
For trailering, the Sea Ray 420 Sedan Bridge 2005 has the edge at 285 lbs dry weight versus 27 205 lbs for the Sea Ray 450 Sundancer 2013. 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 450 Sundancer 2013 has a documented max rating of 380 hp. Engine specifications for the Sea Ray 420 Sedan Bridge 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 420 Sedan Bridge 2005 is Coast Guard rated for 13 passengers, while the Sea Ray 450 Sundancer 2013 is certified for 13. 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 420 Sedan Bridge 2005 measures 171" wide, compared to 158" for the Sea Ray 450 Sundancer 2013. 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.
Which boat has the larger fuel tank — the Sea Ray 420 Sedan Bridge 2005 or the Sea Ray 450 Sundancer 2013?
The Sea Ray 450 Sundancer 2013 has the bigger tank at 292 gallons, versus 35 gallons on the Sea Ray 420 Sedan Bridge 2005. That 257-gallon difference translates to roughly 771–1285 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 420 Sedan Bridge 2005 and Sea Ray 450 Sundancer 2013 from the same manufacturer?
Yes — both the Sea Ray 420 Sedan Bridge 2005 and the Sea Ray 450 Sundancer 2013 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.