2025 Cobalt R31 Sterndrive POWER-MONOHULL

An ideal choice for family boating, the R31 is a just-right sized day boat that also offers style, ample interior room and a full complement of luxury features.
Price advertised is for base configuration of the R31 Sterndrive fitted with Twin Volvo Penta V8-300CE-G Engines.
POWER SELECTION
VOLVO PENTA
Twin V8-300CE-G DP Joystick - 300 hp (221 PkW)
Twin V8-350CE-G DP Joystick - 350 hp (261 Pkw)
Twin V8-380CE DP Joystick - 380 hp (283 PkW)
Twin V8-430CE DP Joystick - 430 hp (321 PkW)
MERCRUISER
Twin 6.2 L MPI ECT-300 B3 DTS Axius - 300 hp (221 PkW)
Twin 6.2 L MPI ECT-350 B3 DTS Axius - 350 hp (261 PkW)
Twin 8.2 Mag ECT B3X DTS Axius - 380 hp (283 PkW)
Twin 8.2 Mag HO ECT B3X DTS Axius - 430 hp (321 PkW)
Engine Enhancements (Standard)
DTS (Merc)
EVC w/PTA & Cruise (Volvo)
Trip Computer (Volvo EVC)
Engine Enhancements (Optional)
Anti-Corrosion System (Vol 300hp)
Seacore (Merc)
TCC (Titanium Ceramic Coating)-Volvo
VOL Total Control Pkg (Autopilot & DPS)
Dash & Instrumentation
Standard
Compass, Digital
Composite Helm Eyebrow, Custom Stitching
Depth & Water Temp Gauge Pkg.
Glass Cockpit, Dual Garmin 9 Displays
Hour Meters, Digital
Stainless Steel Switches
Steering Wheel, Black Leather/Stainless Steel
USB/USB-C Receptacle Charger
Digital Switching
Optional
Anti-Corrosion System (Vol 300hp)
Seacore (Merc)
TCC (Titanium Ceramic Coating)-Volvo
VOL Total Control Pkg (Autopilot & DPS)
Entertainment
Standard
iPod/USB/MP3 Port
Sound System w 6 Spkrs.
Stereo Remote, Dash
Stereo Remote, Transom (Prem/Plat Sound)
Optional
HK Plat Sound w/Transom Spkrs.
HK Plat Sound w/Transom Spkrs.-Hard Top
HK Sound w/Transom & Arch Spkrs-2 pr. (Sunshade)
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)
HK Sound w/Transom & Sandbar Arch Spkrs (Hardtop)
Interior
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)
Trash Receptacle
Optional
Air Compressor w/Holder
Air Conditioning (Head/Helm)
Bow Center Cushion Insert
Bow Table (additional)
Cockpit Heater
Cooler, Soft-Side 37L
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)
Prep Galley w/Refrigerator
Gray Water System
Head, Vac (Thetford) w/Macerator
Head, Vac (Thetford)
Helm Seat, Electric
Interior Trim Pkg., Wood
LED Interior Accent Lighting (RGB) w/Hardtop
Sof-Trac Mat (bow, cockpit)
Sof-Trac Mat (head)
Sof-Trac Mat (helm footrest)
Stainless Steel Foot Tread (helm only)
Teak Floor, Bow & Cockpit
Teak Floor, Head
Throw Pillows, Weighted (10)
Throw Pillows, Weighted (4)
Wireless Phone Chargers, w/Holder
Footrest, Helm (Fold-Down)
Closet-Watersports (Head Compartment)
Convenience Package
Helm Watch, Passenger
LED Interior Accent Lighting (RGB) w/o Hardtop
Phone Chargers, Bow (2)
Sof-Trac Mat (watersports closet)
Teak, Fold-Down Footrest
Exterior
Standard
Anchor Locker
Bow Scuff Plate, Stainless Steel
Cleats (Bow, Midship, Stern)
COBALT Lettering, Chrome Backlit
Extended Running Surface
Graphics, Molded-In Gelcoat
Motorbox Actuator
Ski Tow - Stainless Steel
Stainless Steel Engine Vents
Swim Platform w/Flip-Down Swim Step
Transhield Shipping Cover
Windshield, Black Frame
Cockpit Entry Step
Optional
Board Rack Covers, PTM
Wakeboard Racks, PTM ClampForce 3.0
Arch w/Hard Top
Arch w/Hard Top/Electric Awning
Board Rack Covers, Roswell
COBALT Lettering, Satin Black (exterior)
COBALT Lettering, Satin White (exterior)
Fender Clips w/Line (6) w/Storage
Flagpole w/Flag
Sof-Trac Mat, Swim Platform
Splash & Stow, Inflatable Island
Splash & Stow, Inflatable Mat
Swim Platform Hydraulic w/Flip-Down Step
Swim Platform Transom Lighting
Teak Swim Platform
Transom Shower (cold water)
Transom Tilt Switches (twin)
Underwater Lighting
Wakeboard Racks, T2 (Roswell) w/clamps
Camera, Rear Facing (req. Hardtop)
Windows, Hull Side
Canvas
Optional
Mooring Cover
Bow Tonneau Cover
Shade Sail, Aft (req. Hard Top)
Cockpit Tonneau Cover
Shade Sail, Bow
Structural & Safety
Standard
10/5/3 Year Warranty Protection
Battery Switch, Dual w/ACR
Circuit Breaker Protected Elec System
Composite Floor
Composite Seat Bases
Composite Transom
Fiberglass Cockpit Liner
Fiberglass Stringer System
Fire Extinguisher(s), Manual
Ignition Safety Switch
Kevlar Reinforced Hull
Stainless Steel Windshield Braces
Through Prop Exhaust
Optional
CE Requirements w/Auto Fire Extinguisher
Battery Maintainer/Charger, 110v
Battery Maintainer/Charger, 220v
Fire Extinguisher, Automatic System
Gyroscope, Seakeeper 1
Tool Kit
Trim Tabs w/Indicators w/Autoglide
Trim Tabs w/Indicators, w/o Autoglide
Windlass w/Docking Lights System
Rearview Mirror, Roswell w/Custom Cover
Specifications
Length Overall w/Swim Platform
31' 5'' / 9.58 m
Beam
9' 10'' / 2.99 m
Deadrise at Transom
21 degrees / 21 degrees
Fuel Capacity
160 gal / 606 L
Freshwater Capacity
18 gal / 68 L
Bridge Clearance (windshield only)
5' 4'' / 1.63 m
Bridge Clearance w/ Hardtop
9' 1'' / 2.77 m
Bridge Clearance w/ Hardtop low position
7' 8'' / 2.41 m
Draft Drive Up, Twin Eng.
26'' / .66 m
Draft Drive Down, Twin Eng.
44'' / 1.12 m
Dry Weight, w/Twin Engines (options not included)
9500 lbs / 4309 kg
Boat Certified Capacity
Yacht Certified
Boat Certified Capacity w/gear
Yacht Certified
Cobalt Boats distributor for Australia and New Zealand located on the Gold Coast, ***.
Pick up from Cobalt Boats Australia includes attached options above.
Cobalt Boats Australia Mon - Fri 8am till 5pm and Sat 8am till 2pm.
 In house finance options available. Let us organize all of your finance and insurance needs to get you on the water quicker than ever.
 *Trade-ins welcome*
 Call today for a quote
***Photos may display options & accessories not included in base price***