Detailed Evaluation & Buyer Recommendation
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