Sea Ray 420 Sedan Bridge 2005 boat specs
Sea Ray
Sea Ray 420 Sedan Bridge 2005
2005
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VS
Sea Ray 470 Sundancer® 2010 boat specs
Sea Ray
Sea Ray 470 Sundancer® 2010
2010
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Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 470 Sundancer® 2010 — Same Brand, Different Boat

The Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 470 Sundancer® 2010 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 470 Sundancer® 2010 at 47,3 ft. At 285 lbs and 285 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 470 Sundancer® 2010 tops out at 474 hp. Engine specs for the Sea Ray 420 Sedan Bridge 2005 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 35 gal and 35 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Sea Ray 470 Sundancer® 2010 is rated for 14 passengers, while the Sea Ray 420 Sedan Bridge 2005 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 470 Sundancer® 2010 could be the deciding factor.

Bottom line: Choose the Sea Ray 470 Sundancer® 2010 if your priority is putting more people on the water — it handles 14 passengers and at 47,3 ft it has the deck room to back that rating up comfortably. The Sea Ray 420 Sedan Bridge 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 13 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
MakeSea Ray
Model420 Sedan Bridge
Model470 Sundancer®
Model Year2005
Model Year201
Measurements / Dimensions
Beam14 ft. 3 in. (4.27 m)
Beam14 ft. 0 in. (4.27 m)
Beam - Meters4.34
Beam - Meters4.27
Beam - Inches171
Beam - Inches168
Deadrise18℃
Deadrise19℃
Draft [max] - Detail44 in. (111.8 cm)
Draft [max] - DetailZeus: 42 in. (107 cm)
Draft [max] - Meters1.12
Draft [max] - Meters1.07
Draft [max] - Inches44
Draft [max] - Inches42
Weight - Detail28,500 lbs. (12,927 kg)
Weight - Detail28,500 lbs. (12,928 kg)
Weight - kg12927.37
Weight - kg12927.37
Weight - lbs.285
Weight - lbs.285
Length - Meters13.84
Length - Metersnot available
Length - Feet45
Length - Feet47.25
Length - Inches5
Length - Inchesnot available
Length overall - Detail45 ft. 5 in. (13.84 m)
Length overall - Detail47 ft. 3 in. (14.4 m)
Length overall - Meters13.84
Length overall - Meters14.4
Length overall - Inches545
Length overall - Inches567
Engine and Drivetrain
Engine/s standardT-Cummins MerCruiser? 6CTA 8.3M Diesel Inboards (T-430 hp - 321 kw)
Engine/s standardCummins? MerCruiser? QSB 425 Twin Diesel Zeus drives
Fuel tank capacity - Detail350 gal. (1,324.8 l)
Fuel tank capacity - Detail350 gal. (1,325 l)
Fuel tank capacity - Liters1324.89
Fuel tank capacity - Liters1324.89
Fuel tank capacity - Gal35
Fuel tank capacity - Gal35
Drive typeInboard
Drive typeInboard - Twin
Fuel typenot available
Fuel typeDiesel
Horsepowernot available
HorsepowerTwin 420 hp (313 kW)
Engine maxnot available
Engine maxTwin 474 hp (353 kW)
Operational Info
Water capacity120 gal. (454 l)
Water capacity100 gal. (378 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
Water heater capacitynot available
Water heater capacity6 gal. (26.4 l)
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeSemi Displacement

Sea Ray 420 Sedan Bridge 2005 vs Sea Ray 470 Sundancer® 2010 — Common Questions

Which is the larger boat — the Sea Ray 420 Sedan Bridge 2005 or the Sea Ray 470 Sundancer® 2010?
The Sea Ray 470 Sundancer® 2010 is the longer of the two at 47,3 feet overall. The Sea Ray 420 Sedan Bridge 2005 comes in at 45,0 feet, making it roughly 2,3 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 470 Sundancer® 2010?
For trailering, the Sea Ray 470 Sundancer® 2010 has the edge at 285 lbs dry weight versus 285 lbs for the Sea Ray 420 Sedan Bridge 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 470 Sundancer® 2010 has a documented max rating of 474 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 470 Sundancer® 2010 is certified for 14. 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 168" for the Sea Ray 470 Sundancer® 2010. 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 420 Sedan Bridge 2005 and Sea Ray 470 Sundancer® 2010?
Both boats carry similar fuel loads — 35 gallons and 35 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 420 Sedan Bridge 2005 and Sea Ray 470 Sundancer® 2010 from the same manufacturer?
Yes — both the Sea Ray 420 Sedan Bridge 2005 and the Sea Ray 470 Sundancer® 2010 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.