August 20, 2026
Sea Ray SLX 310 Outboard: Same Number, Different Boat
Sea Ray builds two boats called SLX 310, and the outboard is the longer, lighter, faster one: 33'10" against 31'6", 10,335 lb dry against 11…
Read the articleSea Ray: Everything You Need To Know
You want a boat you can run yourself on Saturday and still sleep four on Sunday. That's the buyer Sea Ray builds for: American sport boats and sport cruisers from 19 to 42 feet. Here is our expert assessment of the brand.
— Tony Smith
Founder, Minted Yachts
Sea Ray is the volume builder that stopped apologising for being one. It walked away from the yacht business at the end of the 2010s and put everything back into sport boats and sport cruisers, and the current range is better for the focus. Every model is offered in sterndrive and outboard form, which is a genuinely useful thing for a buyer — you can pick the propulsion without changing the boat.
The thing that stands out when you look at the whole range at once is Mercury. Sea Ray has been part of Brunswick since 1986, and Brunswick owns Mercury Marine, so every boat here is a fully integrated Mercury package: the engines, the Joystick Piloting, the SmartCraft digital throttle and shift, the VesselView data on the screen, Active Trim, Dynamic Running Surface. There is no adapter layer between the boat and the engine, and you feel it most at the dock.
The warranty is worth reading before you sign anything. Sea Ray runs two schemes: five years bow-to-stern on the SPX, SDX and SLX sport boats with lifetime structural cover, and three years on the Sundancers with ten years structural. The SLX 400 and 400 Outboard sit with the Sundancers, not with the sport boats whose badge they wear.
Explore the Sea Ray Series
SLXThe sport boats — SLX 280 Outboard to SLX 400 Outboard, 31'5" to 42'2", on Mercury sterndrives and Verado outboardsSea Ray SLX series guideSundancerThe sport cruisers — Sundancer 320 and 370 in sterndrive and outboard form, 32'10" to 39'9", all sleeping fourSea Ray Sundancer series guideSDXThe deck boats — SDX 290 Outboard, 31'2", twin Mercury 200s, 131 gal and a published 54–55 mphSea Ray SDX series guide
Feature Model Lineup
Deep-dive specs and expert opinions on current Sea Ray models. Don't see the Sea Ray you're looking for? Reach out for new and pre-owned brokerage options.
Photo credit Sea Ray.
A 31'5" outboard sport boat with twin 250 Verado power and Joystick Piloting standard, 135 gallons of fuel and a Sea Ray-published 180-mile cruising range — but fresh water only arrives with the Water System Bundle.
A 31'6" sterndrive dayboat: twin MerCruiser 4.5L with Joystick Piloting standard, 21° deadrise, a wet bar aft, and a published 44–50 mph.
The outboard SLX 310: 33'10" on the same 10'3" beam as the sterndrive, 917 lb lighter, 158 gallons, twin 300 Verado standard, 33-39 mph cruise.
A 36'0" sterndrive dayboat that keeps its transom clear: twin MerCruiser 6.2L with Joystick Piloting standard, an air-conditioned Port Hideaway, 21° deadrise and a published 44–52 mph.
At 38'0" and 13,027 lb the outboard SLX 350 is two feet longer and 1,208 lb lighter than the sterndrive, with twin 350 Verado V10s, seating for 18 and a published 48–64 mph.
Triple 300 Verados, a 35–38 mph cruise, 49–52 mph wide open and 238 miles at cruise — all four Sea Ray's own.
39'9" of sterndrive sport boat with a published 47–50 mph wide-open band, 250 gallons and a transom with nothing bolted to it.
42'2", triple 300 Verados standard and twin 600 hp V12s optional, with a fold-down swim terrace that opens the cockpit to the water.
Sleeps four on a 32'10" hull, with bowrider seating forward and a wet bar aft. Twin MerCruiser 6.2L, 21° deadrise, coupe hardtop optional.
A 34'9" outboard cruiser that sleeps four and carries 220 gallons — 62 more than the sterndrive Sundancer 320 — behind twin Mercury 350 Verado V10s.
The boat that set Sea Ray's current design language: 860 hp, 36–38 mph cruise, a separate shower in the head, and CZone switching at the helm.
Sea Ray's 39'9" outboard Sundancer: triple 300 Verados standard, twin 600 V12s optional, a separate shower in the head.
A 31'2" yacht-certified deck boat with a standard wet bar and a head compartment with a vanity and sink, running twin Mercury 200 FourStrokes to a published 54-55 mph — and a Sea Ray-published 271-mile cruising range, 91 miles further than the SLX 280 Outboard's.
Request other Brand or Model Information, with our Yacht Specs Direct, offer.
Watch Our Sea Ray Reviews
Official Sea Ray Premieres
Videos courtesy of Sea Ray.
Sea Ray Articles & Guides
Considering Sea Ray? Also Explore:
Frequently Asked Questions
What performance figures does Sea Ray give for its boats?
For most of them, yes. Every Sea Ray specification block gives length, beam, fuel, propulsion, draft trimmed down and up, dry weight, deadrise, water capacity and holding tank. On top of that, the SLX 280 Outboard, SLX 310 Outboard, SLX 360 Outboard, SDX 290 Outboard and Sundancer 370 each publish a cruising speed, a wide-open-throttle band and two range figures, while the SLX 310, SLX 350, SLX 350 Outboard and SLX 400 publish a wide-open-throttle band.
Where a speed matters to your decision, start from the builder's own figure and verify it at your own cruising speed on the sea trial — hold the speed you would really run, read the fuel flow at that rpm, and work the range against the tank.
Are Sea Ray speeds quoted in miles per hour or knots?
Miles per hour. Sea Ray is an American sport-boat and sport-cruiser builder and the entire segment quotes mph, so every Sea Ray speed figure is in miles per hour and should not be read as knots. The difference is not trivial: the Sundancer 370's published 42 to 44 mph is about 36 to 38 knots. Ranges are quoted in statute miles for the same reason. If you are comparing a Sea Ray against a European yacht whose figures are in knots and nautical miles, convert before you draw a conclusion.
What does Sea Ray's warranty actually cover, and which boats get five years?
Sea Ray runs two schemes and the split is not the one most buyers assume. SURPA5S+ gives five years of bow-to-stern factory cover plus a Limited Lifetime Structural Hull/Deck warranty to the original owner, and it applies to SPX, SDX and SLX sport boats — but it explicitly excludes the SLX 400 and SLX 400 Outboard. SENTIN3L gives three years bow-to-stern plus a 10-year Limited Structural Hull/Deck warranty, and covers all 2015 model year and newer Sundancers plus those two SLX 400 models. Both warranties are transferable to subsequent owners free of charge, which matters at resale. Terms and territorial limits apply, so read the Express Limited Warranty for your build.
Why is every Sea Ray powered by Mercury?
Because they are part of the same company. Sea Ray joined Brunswick Corporation in 1986, and Brunswick also owns Mercury Marine and Simrad electronics. That is why the propulsion, the digital throttle and shift, the Joystick Piloting, the VesselView engine data on the helm screens and features like Active Trim and Dynamic Running Surface all behave as one integrated system rather than a boat with an engine bolted to it. Practically, it means a Mercury dealer anywhere can service the whole drivetrain, and it means the joystick and the screens talk to each other without an adapter layer in between.
Want Our Honest Assessment?
Every buyer's mission is different. Tell us how you plan to use your vessel, and we'll give you the straight story on which models fit your life—and which don't.
Specific Model Details & Advice