Sea Ray 185 Outboard Sport 2005 boat specs
Sea Ray
Sea Ray 185 Outboard Sport 2005
2005
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VS
Sea Ray 300 Sundeck 2010 boat specs
Sea Ray
Sea Ray 300 Sundeck 2010
2010
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Sea Ray 185 Outboard Sport 2005 vs Sea Ray 300 Sundeck 2010 — Same Brand, Different Boat

The Sea Ray 185 Outboard Sport 2005 vs Sea Ray 300 Sundeck 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.

Size is the most obvious dividing line here. The Sea Ray 300 Sundeck 2010 measures 29,5 feet overall (2010), giving it roughly 11,5 additional feet of deck space compared to the Sea Ray 185 Outboard Sport 2005 at 18,0 feet (2005). Weight tells a clearer story for trailering families: the Sea Ray 300 Sundeck 2010 tips the scales at 6 044 lbs — 5 859 lbs less than the Sea Ray 185 Outboard Sport 2005 at 185 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 300 Sundeck 2010 tops out at 425 hp. Engine specs for the Sea Ray 185 Outboard Sport 2005 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Sea Ray 300 Sundeck 2010 carries 93 gallons versus 2 gallons in the Sea Ray 185 Outboard Sport 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 8 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: The Sea Ray 300 Sundeck 2010 at 29,5 ft is the right call if deck space, comfort, and entertaining are top of your list. The Sea Ray 185 Outboard Sport 2005 at 18,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
MakeSea Ray
MakeSea Ray
Model185 Outboard Sport
Model300 Sundeck?
Model Year2005
Model Year201
Measurements / Dimensions
Beam76 in. (2.29 m)
Beam9 ft. 1 in. (2.76 m)
Beam - Meters1.93
Beam - Meters2.77
Beam - Inches76
Beam - Inches109
Deadrise19℃
Deadrise21℃
Draft [drive up] - Detail12 in. (30.5 cm)
Draft [drive up] - Detail23 in. (58 cm)
Draft [drive up] meters0.3
Draft [drive up] meters0.58
Draft [drive up] inches12
Draft [drive up] inches23
Draft [max] - Detail30 in. (76.2 cm)
Draft [max] - Detail39 in. (99 cm)
Draft [max] - Meters0.76
Draft [max] - Meters0.99
Draft [max] - Inches3
Draft [max] - Inches39
Weight - Detail1,850 lbs. (839 kg)
Weight - Detail6,044 lbs. (2,741 kg)
Weight - kg839.15
Weight - kg2741.51
Weight - lbs.185
Weight - lbs.6044
Length - Meters5.49
Length - Metersnot available
Length - Feet18
Length - Feet29.5
Length overall - Detail18 ft. 0 in. (5.49 m)
Length overall - Detail29 ft. 6 in. (8.99 m)
Length overall - Meters5.49
Length overall - Meters8.99
Length overall - Inches216
Length overall - Inches354
Engine and Drivetrain
Engine/s standardMercury? 115 2-Stroke (115 hp - 86 kw)
Engine/s standardMX6.2 MPI Bravo? III DTS
Fuel tank capacity - Detail20 gal. (75.7 l)
Fuel tank capacity - Detail93 gal. (352 l)
Fuel tank capacity - Liters75.71
Fuel tank capacity - Liters352.04
Fuel tank capacity - Gal2
Fuel tank capacity - Gal93
Drive typeOutboard
Drive typeI/O
Engine makenot available
Engine makeMerCruiser®
Fuel typenot available
Fuel typeGas
Horsepowernot available
Horsepower320 hp (239 kW)
Engine maxnot available
Engine max425 hp (317 kW)
Operational Info
Maximum capacity1,700 lbs. (771 kg)
Maximum capacitynot available
Maximum people8
Maximum peoplenot available
Water capacitynot available
Water capacity24 gal. (91 l)
Holding tank capacity - Detailnot available
Holding tank capacity - DetailOptional: 10 gal. (38 l)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters37.85
Holding tank capacity - Galnot available
Holding tank capacity - Gal1
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee

Sea Ray 185 Outboard Sport 2005 vs Sea Ray 300 Sundeck 2010 — Common Questions

Which is the larger boat — the Sea Ray 185 Outboard Sport 2005 or the Sea Ray 300 Sundeck 2010?
The Sea Ray 300 Sundeck 2010 is the longer of the two at 29,5 feet overall. The Sea Ray 185 Outboard Sport 2005 comes in at 18,0 feet, making it roughly 11,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 185 Outboard Sport 2005 or the Sea Ray 300 Sundeck 2010?
For trailering, the Sea Ray 185 Outboard Sport 2005 has the edge at 185 lbs dry weight versus 6 044 lbs for the Sea Ray 300 Sundeck 2010. 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 300 Sundeck 2010 has a documented max rating of 425 hp. Engine specifications for the Sea Ray 185 Outboard 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 185 Outboard Sport 2005 is Coast Guard rated for 8 passengers, while the Sea Ray 300 Sundeck 2010 is certified for 8. 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 300 Sundeck 2010 measures 109" wide, compared to 76" for the Sea Ray 185 Outboard 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 185 Outboard Sport 2005 or the Sea Ray 300 Sundeck 2010?
The Sea Ray 300 Sundeck 2010 has the bigger tank at 93 gallons, versus 2 gallons on the Sea Ray 185 Outboard Sport 2005. That 91-gallon difference translates to roughly 273–455 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 185 Outboard Sport 2005 and Sea Ray 300 Sundeck 2010 from the same manufacturer?
Yes — both the Sea Ray 185 Outboard Sport 2005 and the Sea Ray 300 Sundeck 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.