Sea Ray 520 Sedan Bridge 2013 boat specs
Sea Ray
Sea Ray 520 Sedan Bridge 2013
2013
View full specs →
VS
Sea Ray SLX 230 2020 boat specs
Sea Ray
Sea Ray SLX 230 2020
2020
View full specs →

Sea Ray 520 Sedan Bridge 2013 vs Sea Ray SLX 230 2020 — Same Brand, Different Boat

The Sea Ray 520 Sedan Bridge 2013 vs Sea Ray SLX 230 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 520 Sedan Bridge 2013 measures 52,3 feet overall (2013), giving it roughly 29,3 additional feet of deck space compared to the Sea Ray SLX 230 2020 at 23,0 feet (2020). Weight tells a clearer story for trailering families: the Sea Ray SLX 230 2020 tips the scales at 4 840 lbs — 4 789 lbs less than the Sea Ray 520 Sedan Bridge 2013 at 51 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 641 hp, the Sea Ray 520 Sedan Bridge 2013 has a 391-hp advantage over the Sea Ray SLX 230 2020's 250-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 5 gal and 5 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Sea Ray 520 Sedan Bridge 2013 is rated for 15 passengers, while the Sea Ray SLX 230 2020 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 520 Sedan Bridge 2013 could be the deciding factor.

Bottom line: Choose the Sea Ray 520 Sedan Bridge 2013 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 SLX 230 2020 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
Makenot available
Model520 Sedan Bridge
Modelnot available
Model Year2013
Model Yearnot available
Measurements / Dimensions
Beam15 ft. 3 in. (4.65 m)
Beam8.60 ft
Beam - Meters4.65
Beam - Meters2.62
Beam - Inches183
Beam - Inches103
Deadrise15℃
Deadrisenot available
Draft [max] - Detail51 in. (130 cm)
Draft [max] - Detail3.90 ft
Draft [max] - Meters1.3
Draft [max] - Meters1.19
Draft [max] - Inches51
Draft [max] - Inches47
Weight - Detail51,000 lbs. (23,133 kg)
Weight - Detailnot available
Weight - kg23133.19
Weight - kgnot available
Weight - lbs.51
Weight - lbs.not available
Length - Feet52.25
Length - Feet23
Length [over all with swim platform]56 ft. 5 in. (17.2 m)
Length [over all with swim platform]not available
Length overall - Detail52 ft. 3 in. (16 m)
Length overall - Detail23.00 ft
Length overall - Meters15.93
Length overall - Meters7.01
Length overall - Inches627
Length overall - Inches276
Draft Minnot available
Draft Min2.10 ft
Displacementnot available
Displacement4840.00 lbs
Body / Hull
Hull materialFiberglass
Hull materialnot available
Hull typeSemi Displacement
Hull typenot available
Engine and Drivetrain
Engine makeCummins®
Engine makeMerCruiser
Engine/s standardTwin QSM-11 670 T2 with DTS
Engine/s standardnot available
Fuel tank capacity - Detail500 gal. (1,892 l)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters1892.71
Fuel tank capacity - Liters189.27
Fuel tank capacity - Gal5
Fuel tank capacity - Gal5
Fuel typeDiesel
Fuel typeGas
Drive typeInboard - Twin
Drive typeinboard
HorsepowerTwin 641 php (477 kW)
Horsepower250 hp
Engine modelnot available
Engine model4.5L MPI ECT Bravo®
Operational Info
Water capacity140 gal. (530 l)
Water capacitynot available
Holding tank capacity - Detail68 gal. (257 l)
Holding tank capacity - Detailnot available
Holding tank capacity - Liters257.41
Holding tank capacity - Litersnot available
Holding tank capacity - Gal68
Holding tank capacity - Galnot available
Trailerablenot available
TrailerableYes
Boat typenot available
Boat typePower

Sea Ray 520 Sedan Bridge 2013 vs Sea Ray SLX 230 2020 — Common Questions

Which is the larger boat — the Sea Ray 520 Sedan Bridge 2013 or the Sea Ray SLX 230 2020?
The Sea Ray 520 Sedan Bridge 2013 is the longer of the two at 52,3 feet overall. The Sea Ray SLX 230 2020 comes in at 23,0 feet, making it roughly 29,3 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray 520 Sedan Bridge 2013 or the Sea Ray SLX 230 2020?
For trailering, the Sea Ray 520 Sedan Bridge 2013 has the edge at 51 lbs dry weight versus 4 840 lbs for the Sea Ray SLX 230 2020. 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 2013 is rated to a maximum of 641 hp, giving it the larger power ceiling. The Sea Ray SLX 230 2020 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 520 Sedan Bridge 2013 is Coast Guard rated for 15 passengers, while the Sea Ray SLX 230 2020 is certified for 7. 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 2013 measures 183" wide, compared to 103" for the Sea Ray SLX 230 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.
How do the fuel tanks compare on the Sea Ray 520 Sedan Bridge 2013 and Sea Ray SLX 230 2020?
Both boats carry similar fuel loads — 5 gallons and 5 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Sea Ray 520 Sedan Bridge 2013 and Sea Ray SLX 230 2020 from the same manufacturer?
Yes — both the Sea Ray 520 Sedan Bridge 2013 and the Sea Ray SLX 230 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.