Sea Ray 180 Sport 2005 boat specs
Sea Ray
Sea Ray 180 Sport 2005
2005
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VS
Sea Ray 320 Sundancer 2005 boat specs
Sea Ray
Sea Ray 320 Sundancer 2005
2005
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Sea Ray 180 Sport 2005 vs Sea Ray 320 Sundancer 2005 — Same Brand, Different Boat

The Sea Ray 180 Sport 2005 vs Sea Ray 320 Sundancer 2005 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 320 Sundancer 2005 measures 35,0 feet overall (2005), giving it roughly 18,0 additional feet of deck space compared to the Sea Ray 180 Sport 2005 at 17,0 feet (2005). Weight tells a clearer story for trailering families: the Sea Ray 320 Sundancer 2005 tips the scales at 138 lbs — 117 lbs less than the Sea Ray 180 Sport 2005 at 21 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.

For family outings this is probably the sharpest distinction between the two. The Sea Ray 320 Sundancer 2005 is rated for 10 passengers, while the Sea Ray 180 Sport 2005 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 320 Sundancer 2005 could be the deciding factor.

Bottom line: Choose the Sea Ray 320 Sundancer 2005 if your priority is putting more people on the water — it handles 10 passengers and at 35,0 ft it has the deck room to back that rating up comfortably. The Sea Ray 180 Sport 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
MakeSea Ray
Model180 Sport
Model320 Sundancer?
Model Year2005
Model Year2005
Measurements / Dimensions
Beam70 in. (2.13 m)
Beam11 ft. 5 in. (3.48 m)
Beam - Meters1.78
Beam - Meters3.48
Beam - Inches7
Beam - Inches137
Deadrise19℃
Deadrise21℃
Draft [drive up] - Detail18 in. (45.7 cm)
Draft [drive up] - Detail33 in. (83.8 cm)
Draft [drive up] meters0.46
Draft [drive up] meters0.84
Draft [drive up] inches18
Draft [drive up] inches33
Draft [max] - Detail35 in. (88.9 cm)
Draft [max] - Detail43 in. (109.2 cm) Inboards: 33 in. (83.8 cm)
Draft [max] - Meters0.89
Draft [max] - Meters1.09
Draft [max] - Inches35
Draft [max] - Inches43
Weight - Detail2,100 lbs. (953 kg)
Weight - Detail13,800 lbs. (6,260 kg)
Weight - kg952.54
Weight - kg6259.57
Weight - lbs.21
Weight - lbs.138
Length - Meters5.33
Length - Meters10.82
Length - Feet17
Length - Feet35
Length - Inches6
Length - Inches6
Length overall - Detail17 ft. 6 in. (5.33 m)
Length overall - Detail35 ft. 6 in. (10.82 m)
Length overall - Meters5.33
Length overall - Meters10.82
Length overall - Inches21
Length overall - Inches426
Engine and Drivetrain
Engine/s standard3.0L Alpha I MCM Stern Drive (135 hp - 101 kw)
Engine/s standardT-5.0L MPI Bravo? III MCM Stern Drives (T-260 hp - 194 kw)
Fuel tank capacity - Detail21 gal. (79.5 l)
Fuel tank capacity - Detail200 gal. (757 l)
Fuel tank capacity - Liters79.49
Fuel tank capacity - Liters757.08
Fuel tank capacity - Gal21
Fuel tank capacity - Gal2
Drive typeI/O
Drive typeI/O
Operational Info
Maximum capacity980 lbs. (444.5 kg)
Maximum capacitynot available
Maximum people7
Maximum peoplenot available
Water capacitynot available
Water capacity40 gal. (151.4 l)
Holding tank capacity - Detailnot available
Holding tank capacity - Detail28 gal. (106 l)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters105.99
Holding tank capacity - Galnot available
Holding tank capacity - Gal28

Sea Ray 180 Sport 2005 vs Sea Ray 320 Sundancer 2005 — Common Questions

Which is the larger boat — the Sea Ray 180 Sport 2005 or the Sea Ray 320 Sundancer 2005?
The Sea Ray 320 Sundancer 2005 is the longer of the two at 35,0 feet overall. The Sea Ray 180 Sport 2005 comes in at 17,0 feet, making it roughly 18,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 180 Sport 2005 or the Sea Ray 320 Sundancer 2005?
For trailering, the Sea Ray 180 Sport 2005 has the edge at 21 lbs dry weight versus 138 lbs for the Sea Ray 320 Sundancer 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.
How many people can each boat hold?
The Sea Ray 180 Sport 2005 is Coast Guard rated for 7 passengers, while the Sea Ray 320 Sundancer 2005 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 320 Sundancer 2005 measures 137" wide, compared to 7" for the Sea Ray 180 Sport 2005. 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 180 Sport 2005 or the Sea Ray 320 Sundancer 2005?
The Sea Ray 180 Sport 2005 has the bigger tank at 21 gallons, versus 2 gallons on the Sea Ray 320 Sundancer 2005. That 19-gallon difference translates to roughly 57–95 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 180 Sport 2005 and Sea Ray 320 Sundancer 2005 from the same manufacturer?
Yes — both the Sea Ray 180 Sport 2005 and the Sea Ray 320 Sundancer 2005 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.