Sea Ray 680 Sun Sport 2005 boat specs
Sea Ray
Sea Ray 680 Sun Sport 2005
2005
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VS
Sea Ray Sundancer 350 2020 boat specs
Sea Ray
Sea Ray Sundancer 350 2020
2020
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Sea Ray 680 Sun Sport 2005 vs Sea Ray Sundancer 350 2020: Same Brand, Different Boat

The Sea Ray 680 Sun Sport 2005 vs Sea Ray Sundancer 350 2020 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 680 Sun Sport 2005 measures 70,0 feet overall (2005), giving it roughly 35,0 additional feet of deck space compared to the Sea Ray Sundancer 350 2020 at 35,0 feet (2020). Weight tells a clearer story for trailering families: the Sea Ray 680 Sun Sport 2005 tips the scales at 75 000 lbs - 59 220 lbs more than the Sea Ray Sundancer 350 2020 at 15 780 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 Sundancer 350 2020 tops out at 350 hp. Engine specs for the Sea Ray 680 Sun Sport 2005 aren't listed - confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Sea Ray 680 Sun Sport 2005 carries 1 000 gallons versus 230 gallons in the Sea Ray Sundancer 350 2020. 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 680 Sun Sport 2005 is rated for 21 passengers, while the Sea Ray Sundancer 350 2020 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 680 Sun Sport 2005 could be the deciding factor.

Bottom line: Choose the Sea Ray 680 Sun Sport 2005 if your priority is putting more people on the water - it handles 21 passengers and at 70,0 ft it has the deck room to back that rating up comfortably. The Sea Ray Sundancer 350 2020 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
Makenot available
Model680 Sun Sport?
Modelnot available
Model Year2005
Model Yearnot available
Measurements / Dimensions
Beam18 ft. 6 in. (5.64 m)
Beam11.40 ft
Beam - Meters5.64
Beam - Meters3.47
Beam - Inches222
Beam - Inches137
Deadrise19℃
Deadrisenot available
Draft [max] - Detail57 in. (144.8 cm)
Draft [max] - Detail4.00 ft
Draft [max] - Meters1.45
Draft [max] - Meters1.22
Draft [max] - Inches57
Draft [max] - Inches48
Weight - Detail75,000 lbs. (34,029 kg)
Weight - Detailnot available
Weight - kg34019.4
Weight - kgnot available
Weight - lbs.75000
Weight - lbs.not available
Length - Meters21.46
Length - Metersnot available
Length - Feet70
Length - Feet35
Length - Inches5
Length - Inchesnot available
Length overall - Detail70 ft. 5 in. (21.46 m)
Length overall - Detail35.00 ft
Length overall - Meters21.46
Length overall - Meters10.67
Length overall - Inches845
Length overall - Inches420
Draft Minnot available
Draft Min3.00 ft
Displacementnot available
Displacement15780.00 lbs
Engine and Drivetrain
Engine/s standardT-Caterpillar? C-30 Diesel Inboards (T-1504 hp - 1121 kw)
Engine/s standardnot available
Fuel tank capacity - Detail1,000 gal. (3,785 l)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters3785.41
Fuel tank capacity - Liters870.64
Fuel tank capacity - Gal1000
Fuel tank capacity - Gal230
Drive typeInboard
Drive typenot available
Engine makenot available
Engine makeMercruiser
Engine modelnot available
Engine model6.2L MPI ECT Bravo
Horsepowernot available
Horsepower350 hp
Engine 2 Engine Makenot available
Engine 2 Engine MakeMercruiser
Engine 2 Engine Modelnot available
Engine 2 Engine Model6.2L MPI ECT Bravo
Engine 2 Horsepowernot available
Engine 2 Horsepower350 hp
Operational Info
Water capacity200 gal. (757 l)
Water capacitynot available
Holding tank capacity - Detail100 gal. (378.5 l)
Holding tank capacity - Detailnot available
Holding tank capacity - Liters378.54
Holding tank capacity - Litersnot available
Holding tank capacity - Gal100
Holding tank capacity - Galnot available
Boat typenot available
Boat typePower

Sea Ray 680 Sun Sport 2005 vs Sea Ray Sundancer 350 2020 - Common Questions

Which is the larger boat - the Sea Ray 680 Sun Sport 2005 or the Sea Ray Sundancer 350 2020?
The Sea Ray 680 Sun Sport 2005 is the longer of the two at 70,0 feet overall. The Sea Ray Sundancer 350 2020 comes in at 35,0 feet, making it roughly 35,0 ft shorter - a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer - the Sea Ray 680 Sun Sport 2005 or the Sea Ray Sundancer 350 2020?
For trailering, the Sea Ray Sundancer 350 2020 has the edge at 15 780 lbs dry weight versus 75 000 lbs for the Sea Ray 680 Sun Sport 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 Sundancer 350 2020 has a documented max rating of 350 hp. Engine specifications for the Sea Ray 680 Sun Sport 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 680 Sun Sport 2005 is Coast Guard rated for 21 passengers, while the Sea Ray Sundancer 350 2020 is certified for 10. 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 680 Sun Sport 2005 measures 222" wide, compared to 137" for the Sea Ray Sundancer 350 2020. 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 680 Sun Sport 2005 or the Sea Ray Sundancer 350 2020?
The Sea Ray 680 Sun Sport 2005 has the bigger tank at 1 000 gallons, versus 230 gallons on the Sea Ray Sundancer 350 2020. That 770-gallon difference translates to roughly 2310–3850 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 680 Sun Sport 2005 and Sea Ray Sundancer 350 2020 from the same manufacturer?
Yes - both the Sea Ray 680 Sun Sport 2005 and the Sea Ray Sundancer 350 2020 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.