If your family lives for salt spray and the thrill of the untamed sea, the Cobalt R31 OB Coastal Edition is the outboard day boat you’ve been waiting for.
- Day Cruising
- At Anchor In-Water Activity
- Large Bodies of Water
- No
Exterior
Boasting an impressive 32’ 8” LOA and 9’ 10” beam, the R31 OB is the ideal size for family boating along the shore, with its sleek lines complementing its ocean-beating performance, ample interior room and full complement of amenities. Driven by your choice of up to two Yamaha or Mercury outboard engines, the R31 OB handles shallow, rough or shifting coastal waters with ease, while up to 800 horses deliver smoothness with a kick. Standard features in the intuitively designed helm include dual touchscreen Garmin displays, digital switches and a joystick control for effortless maneuvering.
This premium top features a fixed tinted glass portal, auto-actuated anchor light, LED RGB interior accent lighting, and accommodates an optional electric awning, and the optional Sandbar speaker system.
This new design sunpad seating extends to a full lounge position and still offers plenty of space to comfortably move about the large swim platform.
Experience easy dock-side boarding with a structurally reinforced starboard side entry step. The stainless steel and rubber tread offers a positive no-slip feel around wet environments.
Features & Innovations
Interior
Luxury appointments abound, from a hardtop tower with electric sunshade, an exclusive rear-facing Sunpad Extendable Lounge and a Harman Kardon marine audio system, to such handling tools as an intuitive joystick docking controller and a customized SeaKeeper gyroscopic stabilization system.
This convenient small size galley is ideal for preparing an afternoon snack. It features an inset walnut charcuterie board, tilting storage compartment, and refrigerator drawer as options.
LED accent lighting just received an upgrade. This RGB system is full addressable via the Garmin touch-screen controls and can be programed in a wide range of colors and moving patterns.
In place of the head, the optional Watersports Closet provides secure, out of sight storage for boards, vests, and other gear. Board racks fold flat when not in use. Access from both the cockpit or the bow.
Technical Details

- Length Overall w/Swim Platform32' 8'' / 9.96 m
- Beam9' 10'' / 2.99 m
- Deadrise at Transom21 degrees / 21 degrees
- Fuel Capacity160 gal / 606 L
- Freshwater Capacity18 gal / 68 L
- Bridge Clearance (windshield only)5' 4'' / 1.63 m
- Bridge Clearance w/ Hardtop9' 1'' / 2.77 m
- Bridge Clearance w/ Hardtop low position7' 8'' / 2.41 m
- Draft Drive Up, Twin Eng.25'' / .635 m
- Draft Drive Down, Twin Eng.35'' / .889 m
- Dry Weight, w/Twin Engines (options not included)11,600 lbs / 5,261 kg
- Boat Certified CapacityYacht Certified
- Boat Certified Capacity w/gearYacht Certified
Mercury
- Twin 400 Verado V10, White ELEC w/Joystick - 400 hp (298 PkW)
- Twin 400 Verado V10 Black ELEC w/Joystick - 400 hp (298 PkW)
- Twin 350 Verado V10, White ELEC w/Joystick - 350 hp (261 PkW)
- Twin 350 Verado V10, Black ELEC w/Joystick - 350 hp (261 PkW)
- Twin 300 Verado, White ELEC w/Joystick - 300 hp (224 PkW)
- Twin 300 Verado, Black ELEC w/Joystick - 300 hp (224 PkW)
Yamaha
- Twin F300 XCA, White INT w/Joystick - 300 hp (224 PkW)
- Twin F350 XSA, White INT w/Joystick - 350 hp (261 PkW)
Engine Enhancements (Optional)
- Engine Flush, Reverso-Twin *
Standard
- Compass, Digital
- Composite Helm Eyebrow, Custom Stitching
- Depth & Water Temp Gauge Pkg.
- Digital Switching
- Glass Cockpit, Dual Garmin 9 inch Displays
- Hour Meters, Digital
- Stainless Steel Switches
- Steering Wheel, Black Leather/Stainless Steel
- USB/USB-C Receptacle Charger
Optional
- Flir Vision Camera (w/Garmin Radar)
- Glass Cockpit, Dual Garmin 12 inch Displays
- Radar, Garmin Fantom 18''
- Steering Wheel, Leather Color-Matched
- VHF Radio
- XM Weather - Detail

XM Weather
XM Weather provides real-time, high-resolution animated weather data directly to the Cobalt Glass Cockpit touch screens. View weather conditions across the continental U.S. and 100 miles into U.S. coastal waters, and zoom in on a particular region.
Standard
- iPod/USB/MP3 Port - Detail

iPod/USB/MP3 Port
Includes USB-A and USB-C connections. Multiple power ports throughout, and one power/data port at helm.
- Sound System w 6 Spkrs.
- Stereo Remote, Dash - Detail

Stereo Remote, Dash
Control all stereo functions from the convenient dash mounted head unit.
- Stereo Remote, Transom (Prem/Plat Sound)
Optional
- HK Plat Sound w/Transom Spkrs. - Detail

HK Plat Sound w/Transom Spkrs.
The premium sound system is an all-new, first-of-its-kind marine audio system from Harman Kardon. The system was acoustically tuned to the R33 ensuring a brilliant, expertly tailored sound. Even the most discerning audiophiles will discover a sound that will make every journey more extraordinary.
- HK Plat Sound w/Transom Spkrs.-Hard Top - Detail

HK Plat Sound w/Transom Spkrs.-Hard Top
The premium sound system is an all-new, first-of-its-kind marine audio system from Harman Kardon. The system was acoustically tuned to the R33 ensuring a brilliant, expertly tailored sound. Even the most discerning audiophiles will discover a sound that will make every journey more extraordinary.
- HK Sound w/Transom & Arch Spkrs-2 pr. (Sunshade) - Detail

HK Sound w/Transom & Arch Spkrs-2 pr. (Sunshade)
The premium sound system is an all-new, first-of-its-kind marine audio system from Harman Kardon. The system was acoustically tuned to the R33 ensuring a brilliant, expertly tailored sound. Even the most discerning audiophiles will discover a sound that will make every journey more extraordinary.
- HK Sound w/Transom & Sandbar Arch Spkrs (Hardtop)
- Prem Sound w/Transom & Arch Spkrs-1 pr.
- Prem Sound w/Transom Spkrs.
- Premium Sound w/Transom Spkrs.-Hard Top
- Satellite Radio System
- Stereo Remote, Transom (Std. Sound)
Standard
- Bench Seat Storage
- Bow Walk-Thru Door
- Cooler, 36 qt. (cockpit seat only)
- Dual Sundeck Convertible Lounger
- Head w/Pump Out Porta Potti
- Helm Seat, Extra Wide
- Ice Chest, Bow
- Seating Varadense Comfort
- Sink Console (head compartment) - Detail

Sink Console (head compartment)
Easily accessible, upholstered head compartment. Shown with porcelain toilet and sink console.
- Trash Receptacle
- Helm Seat, Electric
Optional
- Phone Chargers, Aft Cockpit
- Air Compressor w/Holder - Detail

Air Compressor w/Holder
12v power inflator for water toys, with a dedicated holder.
- Air Conditioning (Head/Helm)
- Bow Center Cushion Insert
- Bow Table (additional) - Detail

Bow Table (additional)
- Closet-Watersports (Head Compartment)
- Dinette Table w/Bow & Cockpit Receptacle - Detail

Dinette Table w/Bow & Cockpit Receptacle
- Dinette Table, Solid Teak
- Floor Covering, Sea Grass (bow, cockpit)
- Floor Covering, Sea Grass (head)
- Floor Covering, Sea Grass (helm footrest)
- Footrest, Helm (Fold-Down)
- Gray Water System
- Head, Vac (Thetford) - Detail

Head, Vac (Thetford)
- Head, Vac (Thetford) w/Macerator - Detail

Head, Vac (Thetford) w/Macerator
- Helm Watch, Passenger
- Interior Trim Pkg., Wood
- LED Interior Accent Lighting (RGB) w/Hardtop - Detail

LED Interior Accent Lighting (RGB) w/Hardtop
(Shown in Cobalt model R6)
- LED Interior Accent Lighting (RGB) w/o Hardtop
- Phone Chargers, Bow (2)
- Snack Stand w/Prep Galley & Refrigerator
- Sof-Trac Mat (bow, cockpit)
- Sof-Trac Mat (head)
- Sof-Trac Mat (helm footrest)
- Sof-Trac Mat (watersports closet)
- Stainless Steel Foot Tread (helm only)
- Teak Floor, Bow & Cockpit - Detail

Teak Floor, Bow & Cockpit
- Teak Floor, Head
- Throw Pillows, Weighted (10) - Detail

Throw Pillows, Weighted (10)
Pillows are filled with 4 pounds of Vyram weighted pellets for stable placement while boat is underway. Available in five Sunbrella outdoor fabric colors. Size: 22 x 22 inches.
- Throw Pillows, Weighted (4) - Detail

Throw Pillows, Weighted (4)
Pillows are filled with 4 pounds of Vyram weighted pellets for stable placement while boat is underway. Available in five Sunbrella outdoor fabric colors. Size: 22 x 22 inches.
- Wireless Phone Chargers, w/Holder
Standard
- Boarding Ladder, Stbd.
- Anchor Locker
- Bow Scuff Plate, Stainless Steel - Detail

Bow Scuff Plate, Stainless Steel
Protect the gelcoat from trailer hook damage with the unparalleled bow scuff plate. Both fashionable and functional, the bow scuff plate from Cobalt is through bolted and designed custom for every Cobalt. Style may vary slightly depending on model.
- Cleats (Bow, Midship, Stern)
- COBALT Lettering, Chrome Backlit
- Cockpit Entry Step - Detail

Cockpit Entry Step
- Extended Running Surface
- Graphics, Molded-In Gelcoat
- Motorbox Actuator
- Stainless Steel Engine Vents
- Transhield Shipping Cover
- Windshield, Black Frame
Optional
- Board Rack Covers, PTM
- Rod Holders, Gunwales (1 pr.)
- Aft Walk-Thru Gate
- Arch w/Hard Top
- Arch w/Hard Top/Electric Awning
- Arch w/Sunshade
- Camera, Rear Facing (req. Hardtop)
- COBALT Lettering, Satin Black (exterior) - Detail

COBALT Lettering, Satin Black (exterior)
- COBALT Lettering, Satin White (exterior)
- Fender Clips w/Line (6) w/Storage - Detail

Fender Clips w/Line (6) w/Storage
A set of Custom Stainless Fender Clips, which provide a solid and secure place to hang the fenders. Includes the insert, the receptacle, and fender lines.
- Flagpole w/Flag - Detail

Flagpole w/Flag
Stainless steel flag pole with flag clips, receptacle and flag.
- Sof-Trac Mat, Swim Platform
- Swim Platform Transom Lighting - Detail

Swim Platform Transom Lighting
LED transom lighting provides the appropriate level of illumination for the perfect evening of entertaining friends. Shown on model 242 with standard swim platform.
- Transom Shower (cold water)
- Underwater Lighting - Detail

Underwater Lighting
LED underwater lighting system includes two light pods and the switch module. Beautiful evenings begin with illumination. Shown on model R8 Surf.
- Wakeboard Racks, T2 (Roswell) w/clamps
- Windows, Hull Side
- Wakeboard Racks, PTM ClampForce 3.0
Optional
- Shade Sail, Aft (req. Arch)
- Shade Sail, Bow - Detail

Shade Sail, Bow
Shade Sail shown on R8 Surf.
- Bow Tonneau Cover - Detail

Bow Tonneau Cover
Sunbrella Canvas bow cover with stainless steel snaps and velcro which attaches to cockpit cover.
- Cockpit Tonneau Cover - Detail

Cockpit Tonneau Cover
Sunbrella Cockpit Cover with stainless steel snaps custom designed for each Cobalt (including those boats with an arch or Bimini top). Shown on model 200.
- Mooring Cover - Detail

Mooring Cover
The ultimate in weather protection, our mooring cover is custom built for each Cobalt model. The custom cover includes velcro closures around the tops, and stainless steel winches on the gunwale straps, and tent poles to prevent water pooling.
Standard
- 10/5/3 Year Warranty Protection
- Battery Switch, Dual w/ACR - Detail

Battery Switch, Dual w/ACR
Dual battery and voltage sensitive relay provides instant accessibility emergency power. Installation varies with specific boat model.
- Circuit Breaker Protected Elec System - Detail

Circuit Breaker Protected Elec System
Stainless steel circuit breakers can be reset with the touch of a button, and provide surge protection for the electrical system. Installation will vary depending on specific boat model.
- Composite Floor
- Composite Seat Bases
- Composite Transom
- Fiberglass Cockpit Liner
- Fiberglass Stringer System
- Fire Extinguisher(s), Manual
- Ignition Safety Switch - Detail

Ignition Safety Switch
Standard engine ignition safety switch with belt clip.
- Kevlar Reinforced Hull
- Stainless Steel Windshield Braces - Detail

Stainless Steel Windshield Braces
Solid stainless steel windshield support stanchions. Installation will vary depending on specific boat model.
- Through Prop Exhaust
Optional
- Bonding System w/Sacrificial Anodes *
- Trim Tabs, Pro Control
- Battery Maintainer/Charger, 110v
- Battery Maintainer/Charger, 220v - Detail

Battery Maintainer/Charger, 220v
Built in battery charger located in the engine compartment with external power connection at the transom.
- Gyroscope, Seakeeper 1
- Rearview Mirror, Roswell w/Custom Cover
- Tool Kit - Detail

Tool Kit
- Trim Tabs, Pro Control Auto
- Windlass w/Docking Lights System
A29
R4
R6
R8
R31
R33
R35
R35 Coupe
CS22
CS23
CS23 Surf
R4 SURF
R6 SURF
R8 Surf
R31 Surf
R33 Surf
R35 Surf
R4 OUTBOARD
R6 OUTBOARD
R8 OUTBOARD
R33 Outboard
R35 Outboard
R35 Outboard Coupe