Sea Ray 340 Sundancer 2008 boat specs
Sea Ray
Sea Ray 340 Sundancer 2008
2008
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VS
Sea Ray 520 Sedan Bridge 2012 boat specs
Sea Ray
Sea Ray 520 Sedan Bridge 2012
2012
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Sea Ray 340 Sundancer 2008 vs Sea Ray 520 Sedan Bridge 2012 — Same Brand, Different Boat

Matching a deep vee Sea Ray 340 Sundancer 2008 against a semi displacement Sea Ray 520 Sedan Bridge 2012 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Sea Ray 520 Sedan Bridge 2012 measures 52,3 feet overall (2012), giving it roughly 15,3 additional feet of deck space compared to the Sea Ray 340 Sundancer 2008 at 37,0 feet (2008). Weight tells a clearer story for trailering families: the Sea Ray 340 Sundancer 2008 tips the scales at 155 lbs — 113 lbs more than the Sea Ray 520 Sedan Bridge 2012 at 42 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 power gap is worth calling out. Rated to 764 hp, the Sea Ray 520 Sedan Bridge 2012 has a 389-hp advantage over the Sea Ray 340 Sundancer 2008's 375-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea Ray 340 Sundancer 2008 carries 225 gallons versus 5 gallons in the Sea Ray 520 Sedan Bridge 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Sea Ray 520 Sedan Bridge 2012 is rated for 15 passengers, while the Sea Ray 340 Sundancer 2008 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 520 Sedan Bridge 2012 could be the deciding factor.

Bottom line: Choose the Sea Ray 520 Sedan Bridge 2012 if your priority is putting more people on the water — it handles 15 passengers and at 52,3 ft it has the deck room to back that rating up comfortably. The Sea Ray 340 Sundancer 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 11 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
MakeSea Ray
Model340 Sundancer?
Model520 Sedan Bridge
Model Year2008
Model Year2012
Measurements / Dimensions
Beam12 ft. (3.66 m)
Beam15 ft. 3 in. (4.65 m)
Beam - Meters3.66
Beam - Meters4.65
Beam - Inches144
Beam - Inches183
Deadrise21℃
Deadrise15℃
Draft [drive up] - Detail27 in. (68.6 cm)
Draft [drive up] - Detailnot available
Draft [drive up] meters0.69
Draft [drive up] metersnot available
Draft [drive up] inches27
Draft [drive up] inchesnot available
Draft [max] - Detail32 in. (83 cm) Inboards: 34 in. (88 cm)
Draft [max] - Detail51 in. (130 cm)
Draft [max] - Meters0.86
Draft [max] - Meters1.3
Draft [max] - Inches34
Draft [max] - Inches51
Weight - Detail15,500 lbs. (7,031 kg)
Weight - Detail42,000 lbs. (19,051 kg)
Weight - kg7030.68
Weight - kg19050.86
Weight - lbs.155
Weight - lbs.42
Length - Meters11.43
Length - Metersnot available
Length - Feet37
Length - Feet52.25
Length - Inches6
Length - Inchesnot available
Length overall - Detail37 ft. 6 in. (11.43 m)
Length overall - Detail52 ft. 3 in. (16 m)
Length overall - Meters11.43
Length overall - Meters15.93
Length overall - Inches45
Length overall - Inches627
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeDeep Vee
Hull typeSemi Displacement
Engine and Drivetrain
Engine/s standardT-VD-8.1 S Horizon MerCruiser? - T-370 hp (276 kW)
Engine/s standardTwin QSM11 670 diesel inboards with DTS
Fuel tank capacity - Detail225 gal. (851.6 l), Usable fuel: 203 gal. (770 l)
Fuel tank capacity - Detail500 gal. (1,892 l)
Fuel tank capacity - Liters851.72
Fuel tank capacity - Liters1892.71
Fuel tank capacity - Gal225
Fuel tank capacity - Gal5
Fuel typeGas or Diesel
Fuel typeDiesel
Drive typeInboard
Drive typeInboard - Twin
Engine maxT-375 hp (280 kW)
Engine maxTwin 764 hp (588 kW)
Engine makenot available
Engine makeCummins® MerCruiser®
Horsepowernot available
HorsepowerTwin 640 hp (477 kW)
Operational Info
Water capacity40 gal. (150 l), Gray water tank: 28 gal. (106 l)
Water capacity140 gal. (530 l)
Holding tank capacity - Detail28 gal. (106 l)
Holding tank capacity - Detail68 gal. (257 l)
Holding tank capacity - Liters105.99
Holding tank capacity - Liters257.41
Holding tank capacity - Gal28
Holding tank capacity - Gal68

Sea Ray 340 Sundancer 2008 vs Sea Ray 520 Sedan Bridge 2012 — Common Questions

Which is the larger boat — the Sea Ray 340 Sundancer 2008 or the Sea Ray 520 Sedan Bridge 2012?
The Sea Ray 520 Sedan Bridge 2012 is the longer of the two at 52,3 feet overall. The Sea Ray 340 Sundancer 2008 comes in at 37,0 feet, making it roughly 15,3 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 340 Sundancer 2008 or the Sea Ray 520 Sedan Bridge 2012?
For trailering, the Sea Ray 520 Sedan Bridge 2012 has the edge at 42 lbs dry weight versus 155 lbs for the Sea Ray 340 Sundancer 2008. 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.
Which boat can handle a bigger outboard?
The Sea Ray 520 Sedan Bridge 2012 is rated to a maximum of 764 hp, giving it the larger power ceiling. The Sea Ray 340 Sundancer 2008 tops out at 375 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 Sea Ray 340 Sundancer 2008 is Coast Guard rated for 11 passengers, while the Sea Ray 520 Sedan Bridge 2012 is certified for 15. 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 520 Sedan Bridge 2012 measures 183" wide, compared to 144" for the Sea Ray 340 Sundancer 2008. 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 340 Sundancer 2008 or the Sea Ray 520 Sedan Bridge 2012?
The Sea Ray 340 Sundancer 2008 has the bigger tank at 225 gallons, versus 5 gallons on the Sea Ray 520 Sedan Bridge 2012. That 220-gallon difference translates to roughly 660–1100 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 340 Sundancer 2008 and Sea Ray 520 Sedan Bridge 2012 from the same manufacturer?
Yes — both the Sea Ray 340 Sundancer 2008 and the Sea Ray 520 Sedan Bridge 2012 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.