Sea Ray 300 SLX® 2012 boat specs
Sea Ray
Sea Ray 300 SLX® 2012
2012
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VS
Sea Ray 520 Sedan Bridge 2012 boat specs
Sea Ray
Sea Ray 520 Sedan Bridge 2012
2012
View full specs →

Sea Ray 300 SLX® 2012 vs Sea Ray 520 Sedan Bridge 2012 — Same Brand, Different Boat

Matching a deep vee Sea Ray 300 SLX® 2012 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 22,8 additional feet of deck space compared to the Sea Ray 300 SLX® 2012 at 29,5 feet (2012). At 77 lbs and 42 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 764 hp, the Sea Ray 520 Sedan Bridge 2012 has a 762-hp advantage over the Sea Ray 300 SLX® 2012's 2-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 300 SLX® 2012 carries 13 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 300 SLX® 2012 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 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 300 SLX® 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
MakeSea Ray
Model300 SLX®
Model520 Sedan Bridge
Model Year2012
Model Year2012
Measurements / Dimensions
Beam9 ft. 8 in. (2.95 cm)
Beam15 ft. 3 in. (4.65 m)
Beam - Meters2.95
Beam - Meters4.65
Beam - Inches116
Beam - Inches183
Deadrise21°
Deadrise15℃
Draft [drive up] - Detail23 in. (58.4 cm)
Draft [drive up] - Detailnot available
Draft [drive up] meters0.58
Draft [drive up] metersnot available
Draft [drive up] inches23
Draft [drive up] inchesnot available
Draft [max] - Detail38 in. (96.5 cm)
Draft [max] - Detail51 in. (130 cm)
Draft [max] - Meters0.97
Draft [max] - Meters1.3
Draft [max] - Inches38
Draft [max] - Inches51
Weight - Detail7,700 lbs. (3,493 kg)
Weight - Detail42,000 lbs. (19,051 kg)
Weight - kg3492.66
Weight - kg19050.86
Weight - lbs.77
Weight - lbs.42
Length - Feet29.5
Length - Feet52.25
Length overall - Detail29 ft. 6 in. (8.99 m)
Length overall - Detail52 ft. 3 in. (16 m)
Length overall - Meters8.99
Length overall - Meters15.93
Length overall - Inches354
Length overall - Inches627
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeDeep Vee
Hull typeSemi Displacement
Engine and Drivetrain
Engine makeMerCuriser®
Engine makeCummins® MerCruiser®
Engine/s standard8.2 MAG ECT DTS Bravo® III stern drive
Engine/s standardTwin QSM11 670 diesel inboards with DTS
Fuel tank capacity - Detail130 gal. (492.1 l)
Fuel tank capacity - Detail500 gal. (1,892 l)
Fuel tank capacity - Liters492.1
Fuel tank capacity - Liters1892.71
Fuel tank capacity - Gal13
Fuel tank capacity - Gal5
Fuel typeGas
Fuel typeDiesel
Drive typeI/O
Drive typeInboard - Twin
Horsepower380 hp
HorsepowerTwin 640 hp (477 kW)
Engine max(2) 300 hp
Engine maxTwin 764 hp (588 kW)
Operational Info
Water capacity24 gal. (90 l)
Water capacity140 gal. (530 l)
Holding tank capacity - Detail20 gal. (75 l)
Holding tank capacity - Detail68 gal. (257 l)
Holding tank capacity - Liters75.71
Holding tank capacity - Liters257.41
Holding tank capacity - Gal2
Holding tank capacity - Gal68

Sea Ray 300 SLX® 2012 vs Sea Ray 520 Sedan Bridge 2012 — Common Questions

Which is the larger boat — the Sea Ray 300 SLX® 2012 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 300 SLX® 2012 comes in at 29,5 feet, making it roughly 22,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 300 SLX® 2012 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 77 lbs for the Sea Ray 300 SLX® 2012. 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 300 SLX® 2012 tops out at 2 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 300 SLX® 2012 is Coast Guard rated for 8 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 116" for the Sea Ray 300 SLX® 2012. 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 300 SLX® 2012 or the Sea Ray 520 Sedan Bridge 2012?
The Sea Ray 300 SLX® 2012 has the bigger tank at 13 gallons, versus 5 gallons on the Sea Ray 520 Sedan Bridge 2012. That 8-gallon difference translates to roughly 24–40 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray 300 SLX® 2012 and Sea Ray 520 Sedan Bridge 2012 from the same manufacturer?
Yes — both the Sea Ray 300 SLX® 2012 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.