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2021 Sea Ray SLX 310 Sold Boat in Seattle, WA 98109 US

$274,900

Used
We will let you know when another 2021 Sea Ray SLX 310 is available in Seattle, WA
builtBuilt in 2021
Year the boat was built
model

SLX 310

Boat model
engine

2 Engines (2x MerCruiser)

Engine type and count
length

31.5 feet

Overall boat length
fuel

Gas

Fuel type
material

Fiberglass/Reinforced

Hull material

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The Image of 2021 Sea Ray SLX 310 boat cruising on water with cityscape and Space Needle in background. - 02021 Sea Ray SLX 310
Price$274,900$278,886$263,336$259,855$254,330
LocationSeattleBellevueSeattleSeattleBellevue
Nominal Length32'28'28'31'26'
Draft3'----
Engine MakeMerCruiser-MERCRUISERMERCRUISER-
Total Engine Power300 hp-350 hp300 hp-
Days on Market5836524831765
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Other Sea Ray SLX 310 boats for sale in Washington, United States

Nominal Length
31.5ft
Length Overall
31.5ft
Beam
10.17ft
Max Draft
3.17ft
Drive Up Draft
2.33ft
Deadrise At Transom
21deg
Dry Weight
10787lb
Heads
1
Seating Capacity
14
Fresh Water Tanks
24gal
Fuel Tanks
130gal
Holding Tanks
20gal
Hull Material
fiberglass
Hull Shape
modified-vee
Engine 1
Engine Make
MerCruiser
Engine Model
T-6.2L MPI AXIUS
Total Power
300hp
Engine Hours
80
Engine Type
inboard-outboard
Fuel Type
gasoline
Engine Year
2021
Drive Type
stern
Engine 2
Engine Make
MerCruiser
Engine Model
T-6.2L MPI AXIUS
Total Power
300hp
Engine Hours
80
Engine Type
inboard-outboard
Fuel Type
gasoline
Engine Year
2021
Drive Type
stern
Hull and Deck
  • Dual Digital Dash 12" Simrad MFD w/ GPS/Chartplotter/Sonar
  • Joystick Docking system with Sky Hook, Auto Heading and more
  • Windlass Anchor System with Anchor, Chain and Rode
  • Bow and Cockpit Covers
  • Enclosed Head with Vacuflush head and sink
  • Cockpit Electric BBQ
  • Cockpit Refrigerator
  • Cockpit Removable Infinity Woven Vinyl Flooring
  • Premium Fusion Stereo System
  • Electric Engine Compartment Hatch
  • 30 amp Shore Power
  • Battery Charger Battery Bank - 6
  • Transom Shower
  • Fire Suppression System
Factory Options
  • Automated Submersible Swim Platform ($8,154)
  • Blue LED Lighting Package ($2,000)
  • Blue Thru Hull Under Water Lights ($1,462)
  • Bow Filler Cushion ($911)
  • Bow Side Table - Fiberglass ($769)
  • Cockpit Cover w/ Tonneau Cover ($1,385)
  • Cockpit Refrigerator ($1,743)
  • Cockpit Removable Table - Fiberglass w/ Teak Overlay ($792)
  • Docking Lights ($462)
  • Extended Electric Sunshade ($8,846)
  • Flag Pole and Base - U.S. Flag ($277)
  •  Grill - Electric BBQ in Cockpit ($2,535) - which will work while out boating!
  • Hardtop, Fiberglass w/ Lights ($6,923)
  • Helm - Stainless Steel Foot Rest w/ Rubber Inserts ($357)
  • Infinity Woven Vinyl Cockpit Flooring ($1,231)
  • Inverter - 12v to 120v/60 cycle ($3,538)
  • Opening Canvas Section in Fiberglass Hardtop ($4,615)
  • SeaDek on Swim Platform ($1,031)
  • Shore Power Package w/ Converter and Cord ($3,077)
  • Simrad Select Response 12" Dual Display upgrade ($6,192)
  • Stereo, Premier Audio Upgrade ($3,846)
  • Three Zone Gelcoat ($3,077)
  • Water Heater - 6 Gallons ($1,506)
Disclaimer

Any and all personal property is excluded from the sale of the vessel unless specifically listed and included in the listing specifications reference above. Personal property may be all equipment or gear that is not permanently attached to the vessel including but not limited to: artwork, entertainment equipment, fishing equipment, Direct TV Receivers, recreational equipment, tools, and personal appliances. Pictures may depict owners personal property and are not meant to convey these items are included in the sale of the vessel unless specifically listed herein.

Irwin Yacht Sales offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Additional Contact Information

For more information or to schedule an appointment please contact the Listing Broker: 

Jon Heisel - Assisting Boaters Since 1989 and a Lifelong Boater too!

Cell: 425-359-5341

Email: jon@irwinyachtsales.com 

 

Price History

DateEventPrice
6/28/25No change$279,000
6/8/25Price decreased$274,900(-1.5%)

Contact Irwin Yacht Sales - Seattle

1001 Fairview Ave North, Suite 1200, Seattle, WA, 98109

Sea Ray SLX 310: BoatTEST Review

Reviewed by Jeff Hammond

Overview

The C-Ray SLX310 is a premium model from C-Ray, blending luxury features with advanced technology. This boat is designed to offer both comfort and performance, making it suitable for a variety of recreational boating activities. Our evaluation includes a detailed inspection of its features and a comprehensive performance test.

Exterior Design and Deck Features

The SLX310 features a well-thought-out exterior with a spacious layout. The swim platform area provides 1 foot 1 inch of decking between the outboard well and the transom, creating ample space between the two swim platforms, which measure 4 feet fore and aft. The decking is covered with soft C-Deck non-skid material to enhance traction. Multiple water access points include a fold-out swim step equipped with a sensor for operator alert, ideal for diving or towing sports, and a traditional reboarding ladder certified by the NMMA for safety standards. The sun pad measures 3 feet 2 inches by 5 feet 4 inches and includes a five-position adjustable backrest, storage with built-in dividers beneath, and convenient cup holders integrated into the armrests. Stereo controls and a 12-volt charging station are embedded in the port armrest. The walkthrough from the swim platform rises by a 10-inch step featuring a hatch for wet gear storage and a freshwater shower. The hull houses 12-volt DC switches, a 110-volt battery charger, and a boarding step. The power tower, constructed from aluminum, serves as a high tow point for wakeboarders and supports an electrically actuated bimini shade that lowers 1 foot 8 inches without obstructing the driver's view. A hardtop option is also available.

Cockpit and Helm Station

The cockpit is designed for socializing and functionality, featuring L-shaped seating around a standard table that comfortably accommodates six guests. Upholstery in an earth-tone mocha color is enhanced with diamond stitching for a refined appearance. Storage is abundant, including under-seat compartments, a corner bolster storage area, and a glove box. The floor includes quick-dry pull-out mats and drainage for easy maintenance. The transom sun pad lifts hydraulically to reveal access to the battery pack and other mechanical components such as the engine steering pump and house batteries. A wet bar to starboard includes a sink, grill, storage cabinets, and a fridge/freezer compartment. Forward of the wet bar is an additional cozy seat. The helm station is equipped with dual 9-inch Simrad displays integrated with Mercury Digital Vessel View, offering chart plotting, depth sounding, water temperature, and fish finding capabilities. The helm features a tilt steering wheel, digital push-button start, and conveniently placed ignition keys outside the knee-strike zone. Controls include standard trim tabs, Mercury DTS spinnaker control, and optional joystick and active trim systems, which enhance handling and ease of operation. Visibility from the helm is excellent, aided by a windshield wiper and a low-glare dark vinyl dash insert. The helm seat and companion seat are upholstered with premium materials, include diamond stitching, and offer practical features such as flip-up bolsters, cup holders, grab handles, and swivel capability for the companion seat to engage with the cockpit area. Additional storage includes a closed cubby, an open tray with rubber mat, angled footrests, and an in-floor locker with a sliding drawer.

Private Accommodations and Head

The port console houses a well-appointed head compartment featuring a port light for ventilation, a stainless steel sink, a grab handle, and a vacuum flush toilet with a 20-gallon holding tank. The head is designed for convenience and comfort, complementing the boat’s overall luxurious feel.

Bow Seating and Storage

The bow area offers nearly a full circle of well-padded seating with a standard side-mounted table, with an option for a second table to starboard to accommodate larger gatherings. Two optional filler cushions can convert the seating into a large sun pad. The seats include padded armrests that fold up and down, grab rails, cup holders, and integrated speakers. Storage compartments are accessible beneath the seats, including a large compartment under the starboard seat that extends beneath the helm. The center seat cushion lifts to reveal a step and a hatch providing access to the anchor rode locker, which contains the windlass with remote operation, anchor sprayer, spotlight, and cleat. A beach boarding ladder can also be installed in this area.

Power and Performance

The SLX310 measures 33 feet 10 inches overall with a beam of 10 feet 2 inches and a dry weight of 10,335 pounds. Our test boat, with 50% fuel, two people, and gear, had an estimated test weight of 11,229 pounds. Powered by twin 300-horsepower Mercury Verado outboards, the boat achieved a top speed of 51.3 miles per hour at 5,500 RPM. The most efficient cruising speed was 35.8 miles per hour at 4,000 RPM, with a fuel consumption of 21.5 gallons per hour, yielding a range of approximately 237 statute miles while maintaining a 10% fuel reserve. The SLX310 planes quickly in 4.8 seconds and features SeaRay’s dynamic running surface triangular plates at the stern, which can be manually or automatically adjusted to optimize performance. The ride quality is solid and smooth, with a 21-degree deadrise that cushions impacts in choppy conditions. The boat’s high freeboard helps keep passengers dry, and it responds predictably during high-speed maneuvers. The joystick option greatly enhances precision during docking and low-speed handling.

Conclusion

The C-Ray SLX310 demonstrates a strong attention to detail, combining luxury, technology, and performance in a well-rounded package. Its user-friendly features, including advanced digital controls and thoughtful design elements, make it accessible to a wide range of boaters. The boat’s solid ride, responsive handling, and comprehensive amenities ensure it is well-equipped for enjoyable days on the water.

Rating: 4.4 out of 5

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2021 Sea Ray SLX 310. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Bowrider cost in today's market, or how much does a Sea Ray cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 233,665
Total Payment$417,784.34
Monthly payment
$1,740.77/mo

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2021 Sea Ray SLX 310. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Bowrider cost in today's market, or how much does a Sea Ray cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 233,665
Total Payment$417,784.34
Monthly payment
$1,740.77/mo

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Address

1001 Fairview Ave North
Suite 1200
Seattle, WA 98109

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