Sea Ray SLX 400 2023 boat specs
Sea Ray
Sea Ray SLX 400 2023
2023
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VS
Sea Ray SLX 400 Outboard 2023 boat specs
Sea Ray
Sea Ray SLX 400 Outboard 2023
2023
View full specs →

Sea Ray SLX 400 2023 vs Sea Ray SLX 400 Outboard 2023 — Same Brand, Different Boat

The Sea Ray SLX 400 2023 vs Sea Ray SLX 400 Outboard 2023 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.

On paper these two are close siblings in the size department — Sea Ray SLX 400 2023 at 39,6 ft versus Sea Ray SLX 400 Outboard 2023 at 41,1 ft. Weight tells a clearer story for trailering families: the Sea Ray SLX 400 2023 tips the scales at 20 794 lbs — 2 257 lbs more than the Sea Ray SLX 400 Outboard 2023 at 18 537 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 380 hp, the Sea Ray SLX 400 2023 has a 80-hp advantage over the Sea Ray SLX 400 Outboard 2023's 300-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 SLX 400 Outboard 2023 carries 375 gallons versus 25 gallons in the Sea Ray SLX 400 2023. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 12 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: Performance buyers should lean toward the Sea Ray SLX 400 2023 and its 380-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Sea Ray SLX 400 Outboard 2023 with its 300-hp rating is the more economical daily driver.
Measurements / Dimensions
Length overall - Detail39.60 ft
Length overall - Detail41.11 ft
Length - Feet39.6
Length - Feet41.11
Length overall - Meters12.07
Length overall - Meters12.53
Length overall - Inches475
Length overall - Inches493
Beam12.10 ft
Beam12.10 ft
Beam - Meters3.69
Beam - Meters3.69
Beam - Inches145
Beam - Inches145
Draft [max] - Detail4.40 ft
Draft [max] - Detail4.50 ft
Draft [max] - Meters1.34
Draft [max] - Meters1.37
Draft [max] - Inches53
Draft [max] - Inches54
Draft Min3.30 ft
Draft Min3.20 ft
Displacement20794.00 lbs
Displacement18537.00 lbs
Engine and Drivetrain
Fuel tank capacity - Gal25
Fuel tank capacity - Gal375
Fuel tank capacity - Liters946.35
Fuel tank capacity - Liters1419.53
Engine makeMercruiser
Engine makeMercury
Engine model8.2 MAG ECTBravo
Engine modelVerado
Horsepower380 hp
Horsepower300 hp
Fuel typeGas
Fuel typenot available
Engine 2 Engine MakeMercruiser
Engine 2 Engine MakeMercury
Engine 2 Engine Model8.2 MAG ECTBravo
Engine 2 Engine ModelVerado
Engine 2 Horsepower380 hp
Engine 2 Horsepower300 hp
Drive typenot available
Drive typeoutboard
Engine 2 Drive Typenot available
Engine 2 Drive Typeoutboard
Engine 3 Engine Makenot available
Engine 3 Engine MakeMercury
Engine 3 Engine Modelnot available
Engine 3 Engine ModelVerado
Engine 3 Horsepowernot available
Engine 3 Horsepower300 hp
Engine 3 Drive Typenot available
Engine 3 Drive Typeoutboard
Operational Info
Sleeping capacity4
Sleeping capacity4
Cabins1
Cabins1
Head1
Head1
Water capacity5
Water capacity5
Boat typePower
Boat typePower

Sea Ray SLX 400 2023 vs Sea Ray SLX 400 Outboard 2023 — Common Questions

Which is the larger boat — the Sea Ray SLX 400 2023 or the Sea Ray SLX 400 Outboard 2023?
The Sea Ray SLX 400 Outboard 2023 is the longer of the two at 41,1 feet overall. The Sea Ray SLX 400 2023 comes in at 39,6 feet, making it roughly 1,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sea Ray SLX 400 2023 or the Sea Ray SLX 400 Outboard 2023?
For trailering, the Sea Ray SLX 400 Outboard 2023 has the edge at 18 537 lbs dry weight versus 20 794 lbs for the Sea Ray SLX 400 2023. 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 SLX 400 2023 is rated to a maximum of 380 hp, giving it the larger power ceiling. The Sea Ray SLX 400 Outboard 2023 tops out at 300 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 SLX 400 2023 is Coast Guard rated for 12 passengers, while the Sea Ray SLX 400 Outboard 2023 is certified for 12. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Sea Ray SLX 400 2023 and Sea Ray SLX 400 Outboard 2023 share an 12.10 ft beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank — the Sea Ray SLX 400 2023 or the Sea Ray SLX 400 Outboard 2023?
The Sea Ray SLX 400 Outboard 2023 has the bigger tank at 375 gallons, versus 25 gallons on the Sea Ray SLX 400 2023. That 350-gallon difference translates to roughly 1050–1750 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sea Ray SLX 400 2023 and Sea Ray SLX 400 Outboard 2023 from the same manufacturer?
Yes — both the Sea Ray SLX 400 2023 and the Sea Ray SLX 400 Outboard 2023 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.