Sea Ray SDX 270 Outboard 2018 boat specs
Sea Ray
Sea Ray SDX 270 Outboard 2018
2018
View full specs →
VS
Sea Ray Sundancer 320 Outboard 2023 boat specs
Sea Ray
Sea Ray Sundancer 320 Outboard 2023
2023
View full specs →

Sea Ray SDX 270 Outboard 2018 vs Sea Ray Sundancer 320 Outboard 2023 — Same Brand, Different Boat

The Sea Ray SDX 270 Outboard 2018 vs Sea Ray Sundancer 320 Outboard 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.

Size is the most obvious dividing line here. The Sea Ray Sundancer 320 Outboard 2023 measures 34,1 feet overall (2023), giving it roughly 4,9 additional feet of deck space compared to the Sea Ray SDX 270 Outboard 2018 at 29,2 feet (2018). Weight tells a clearer story for trailering families: the Sea Ray Sundancer 320 Outboard 2023 tips the scales at 13 681 lbs — 8 021 lbs less than the Sea Ray SDX 270 Outboard 2018 at 5 660 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 350 hp, the Sea Ray Sundancer 320 Outboard 2023 has a 100-hp advantage over the Sea Ray SDX 270 Outboard 2018's 250-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 Sundancer 320 Outboard 2023 carries 158 gallons versus 65 gallons in the Sea Ray SDX 270 Outboard 2018. 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 Sundancer 320 Outboard 2023 is rated for 10 passengers, while the Sea Ray SDX 270 Outboard 2018 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray Sundancer 320 Outboard 2023 could be the deciding factor.

Bottom line: Choose the Sea Ray Sundancer 320 Outboard 2023 if your priority is putting more people on the water — it handles 10 passengers and at 34,1 ft it has the deck room to back that rating up comfortably. The Sea Ray SDX 270 Outboard 2018 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
Measurements / Dimensions
Length overall - Detail29.20 ft
Length overall - Detail34.11 ft
Length - Feet29.2
Length - Feet34.11
Length overall - Meters8.9
Length overall - Meters10.4
Length overall - Inches350
Length overall - Inches409
Beam8.60 ft
Beam10.70 ft
Beam - Meters2.62
Beam - Meters3.26
Beam - Inches103
Beam - Inches128
Draft [max] - Detail3.20 ft
Draft [max] - Detail4.40 ft
Draft [max] - Meters0.98
Draft [max] - Meters1.34
Draft [max] - Inches38
Draft [max] - Inches53
Draft Min2.20 ft
Draft Min3.20 ft
Displacement5660.00 lbs
Displacement13681.00 lbs
Engine and Drivetrain
Fuel tank capacity - Gal65
Fuel tank capacity - Gal158
Fuel tank capacity - Liters246.05
Fuel tank capacity - Liters598.09
Engine makeMercury
Engine makeMercury
Engine model250HP Verado®
Engine model350 Verado
Horsepower250 hp
Horsepower350 hp
Fuel typeGas
Fuel typenot available
Drive typeoutboard
Drive typeoutboard
Engine 2 Engine Makenot available
Engine 2 Engine MakeMercury
Engine 2 Engine Modelnot available
Engine 2 Engine Model350 Verado
Engine 2 Horsepowernot available
Engine 2 Horsepower350 hp
Engine 2 Drive Typenot available
Engine 2 Drive Typeoutboard
Operational Info
Head1
Headnot available
Water capacity2
Water capacitynot available
Boat typePower
Boat typePower

Sea Ray SDX 270 Outboard 2018 vs Sea Ray Sundancer 320 Outboard 2023 — Common Questions

Which is the larger boat — the Sea Ray SDX 270 Outboard 2018 or the Sea Ray Sundancer 320 Outboard 2023?
The Sea Ray Sundancer 320 Outboard 2023 is the longer of the two at 34,1 feet overall. The Sea Ray SDX 270 Outboard 2018 comes in at 29,2 feet, making it roughly 4,9 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray SDX 270 Outboard 2018 or the Sea Ray Sundancer 320 Outboard 2023?
For trailering, the Sea Ray SDX 270 Outboard 2018 has the edge at 5 660 lbs dry weight versus 13 681 lbs for the Sea Ray Sundancer 320 Outboard 2023. 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 Sundancer 320 Outboard 2023 is rated to a maximum of 350 hp, giving it the larger power ceiling. The Sea Ray SDX 270 Outboard 2018 tops out at 250 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 SDX 270 Outboard 2018 is Coast Guard rated for 8 passengers, while the Sea Ray Sundancer 320 Outboard 2023 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 Sundancer 320 Outboard 2023 measures 128" wide, compared to 103" for the Sea Ray SDX 270 Outboard 2018. 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 SDX 270 Outboard 2018 or the Sea Ray Sundancer 320 Outboard 2023?
The Sea Ray Sundancer 320 Outboard 2023 has the bigger tank at 158 gallons, versus 65 gallons on the Sea Ray SDX 270 Outboard 2018. That 93-gallon difference translates to roughly 279–465 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray SDX 270 Outboard 2018 and Sea Ray Sundancer 320 Outboard 2023 from the same manufacturer?
Yes — both the Sea Ray SDX 270 Outboard 2018 and the Sea Ray Sundancer 320 Outboard 2023 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.