- Builder
- Cobalt Boats
- Model
- R31 Surf
- Bowrider +2
- Length
- 31.4 ft
- Built in
- United States (USA)
General
BuilderCobalt Boats
Country of Origin🇺🇸 United States (USA)
Boat TypeBowrider, Ski Boat, Day Boats
CategoryPower
Hull TypePlaning
Hull ModifierDeep-V, Hard-Chine
Hull MaterialFiberglass
Vessel DesignerCobalt
Accommodation
LayoutLayout 1
Wet Head1
Total Heads1
Engines
Standard · 2× Volvo Penta V8-300CE-G
Drive TypeSterndrive
Engines2
Horsepower per Engine300 HP
Fuel TypeGas
Optional · 2× Volvo Penta V8-350CE-G
Drive TypeSterndrive
Engines2
Horsepower per Engine350 HP
Fuel TypeGas
Optional · 2× Volvo Penta V8-380CE
Drive TypeSterndrive
Engines2
Horsepower per Engine380 HP
Fuel TypeGas
Optional · 2× Volvo Penta V8-430CE
Drive TypeSterndrive
Engines2
Horsepower per Engine430 HP
Fuel TypeGas
Measurements
Overall Length31.4 ft
Beam9.8 ft
Draft2.1 ft
Dry Weight9,500 lb
Fuel Tank Capacity160 gal
Fresh Water Tank18 gal
Figures are for the current generation unless marked otherwise. Where a specification differs by generation or engine package, it is shown for the relevant version.
What Is a Cobalt Boats R31 Surf?
The R31 Surf is the perfect fusion of luxury, innovation, and wave-making excellence.
Exterior
Designed to elevate every moment on the water, the R31 Surf combines versatile performance with sophisticated style to deliver a surf experience that’s pure Cobalt.
Cobalt Surf System
Cobalt's Surf Series seamlessly integrates Surf Gate™ with a custom-designed surf hull, all powered by Volvo Penta. Nearly all boats in the series employ traditional hard ballast tanks for wave customization. The R31, R33 and R35 Surf models adopt a streamlined design without ballast tanks. This tailored approach ensures agility and simplicity, redefining expectations for surfing enthusiasts across the entire Surf Series.
Interior
The R31 Surf's sleek lines and contemporary design reveal a deep cockpit and greater freeboard for a more spacious interior and larger bow and cockpit areas.
Boats Similar to the Cobalt Boats R31 Surf
Other Cobalt Boats models to compare with the Cobalt Boats R31 Surf.
Authorized Cobalt Boats Dealers
Dealers authorized by Cobalt Boats for the areas shown. Brokerage firms selling used hulls are not listed here.
Genevaboats
Internautic Yachts
MarineMax
Cobalt Boats R31 Surf Exterior
Cobalt Boats R31 Surf Interior
Cobalt Boats R31 Surf Deck Layout
Frequently Asked Questions
The current generation of the Cobalt Boats R31 Surf measures 31.4 ft overall, with a beam of 9.8 ft.
Top and cruising speed depend on the engine package and load. Check the engines tab in the specifications above and the individual listings for the figures of each hull.
New hulls are priced by the builder and its dealers and include the current generation's equipment. Used hulls are priced by their owners and reflect age, hours, condition, and upgrades since delivery.