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Four Winns H310 (2008-)
(w/ 2 x 320-hp MerCruiser 6.2 L (Bravo I))


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Brief Summary

If you’re looking for one of the biggest bow rider’s money can buy, then the Horizon 310 has you covered. A large deep-V hull combined with twin stern drives and a host of amenities puts this sport boat into a league of her own.

Key Features

  • Stainless steel bow scuff plate
  • Premium gel coat
  • Aft shower
  • Stable-Vee® hull
  • Sun lounge storage
  • Aquaflex™ vinyl
  • Snap-in carpet
  • Fiberglass liner
  • Refreshment center
  • Depth sounder with shallow water alarm
  • Sony® AM/FM/CD player
  • Enclosed head
  • Battery management system
  • Bimini top
  • Specifications

    Length Overall 31' 4''
    Beam 9' 8''
    Dry Weight 8,360 lbs. with engine
    Tested Weight N/A
    Draft 35''
    - Draft Up N/A
    - Draft Down N/A
    - Air Draft N/A
    Deadrise/Transom 21 deg.
    Max Headroom N/A
    Bridge Clearance 8' 0'' w/ arch
    Weight Capacity N/A
    Person Capacity N/A
    Fuel Capacity 130 gal.
    Water Capacity 20 gal.
    Length on Trailer N/A
    Height on Trailer N/A
    Trailer Weight N/A
    Total Weight
    (Trailer, Boat, & Engine)

    Prices, features, designs, and equipment are subject to change. Please see your local dealer or visit the builder's website for the latest information available on this boat model.

    Engine Options

    Std. Power Not Available
    Tested Power 2 x 320-hp MerCruiser 6.2 L (Bravo I)
    Opt. Power 1 x 375-hp MerCruiser 496 MAG Bravo III DTS
    1 x 375-hp Volvo Penta 8.1 Gi
    2 x 300-hp MerCruiser 350 MPI Bravo I DTS
    2 x 320-hp Volvo Penta 5.7 GXi DP EVC
    2 x 260-hp MerCruiser 5.0 MPI Bravo III DTS

    Test Results - Change Measurement Unit

    RPM MPH Knots GPH MPG NMPG Stat. Mile NM dBa
    650 3.1 2.7 1.9 1.6 1.4 188 163 69
    1000 5.1 4.4 3.2 1.6 1.4 189 164 72
    1500 7.9 6.9 5.4 1.5 1.3 170 148 76
    2000 9.5 8.3 8.7 1.1 1.0 127 111 81
    2500 20.2 17.5 13.1 1.5 1.3 181 157 85
    3000 27.8 24.2 17.9 1.6 1.4 182 158 90
    3500 31.2 27.1 22.1 1.4 1.2 165 144 94
    4000 33.5 29.1 27.1 1.2 1.1 145 126 95
    4500 41.5 36.1 39.5 1.1 0.9 123 107 98
    4800 42.2 36.7 43.1 1.0 0.9 115 100 100
    650 163 303 5.00 7.19 0.68 69
    1000 164 304 8.20 12.11 0.68 72
    1500 148 274 12.70 20.44 0.62 76
    2000 111 204 15.30 32.93 0.46 81
    2500 157 291 32.50 49.59 0.65 85
    3000 158 293 44.70 67.76 0.66 90
    3500 144 266 50.20 83.66 0.60 94
    4000 126 233 53.90 102.58 0.53 95
    4500 107 198 66.80 149.52 0.45 98
    4800 100 185 67.90 163.15 0.42 100

    All fuel consumption numbers are the total for all engines in the boat. Speeds are measured with Stalker ProSports radar gun or GPS. Fuel consumption (gallons per hour) measured with Floscan digital fuel-flow meter or by on-board factory-installed diagnostic instruments. Range is based on 90% of published fuel capacity. Sound levels determined using Radio Shack digital decibel meter on A scale. 68 dBA is the level of normal conversation. Time to plane is measured from start of acceleration to formation of rooster tail behind boat.

    Performance Chart

    Performance Chart

    Acceleration Times & Test Conditions

    Time To Plane 4.8 sec.
    0 to 30 8.5 sec.
    Ratio 1.65 : 1
    Props N/A
    Load 2 persons, 1/2 fuel, no water, min. gear
    Climate Temp: 85 deg., humid: 50%, wind: 20 mph, seas: light chop

    Captain's Report

    When it Comes Down to Comfort…Size Does Matter By Capt. Ron SvobodaLately, I’ve been talking a lot about big bow riders. Seems like all the boat builders are carving out the cabins on their sportboat line, then loading them up and decking them out with utilitarian stuff. In walks the Four Winns Horizon 310. At 31 feet, 4 inches long, the 310 I believe, is the largest bow rider we’ve tested. The 310 has a 9 feet, 8 inch beam which gives some more elbow room too. The bow of the 310 grants the best water views I’ve seen in a while. The stability of that big hull, combined with her over forty mile-per-hour top speed makes for an exciting cruise. This is one boat I don’t mind letting someone else drive. It’s like a dog cruising down the road with his head out the window. Now add to that the 310’s front lounges and removable snack table and you’ve got it made.Plenty of Room to RelaxWhen you’ve had too much excitement for the day and need to get out of the sun, you can take a snooze in the 310’s midcabin. This useful compartment is located to port and offers a long and narrow bunk. She also provides a handsome Cherrywood cabinet with a built-in Sony stereo system and 6-disc CD changer. Several options are available here including a LCD TV, a microwave oven, and even a shore-powered A/C unit for you folks in the hotter climates.When you need to change into your swimwear, the starboard side head compartment will come in handy. Fairly spacious and comfortable, the head compartment supplies a flush toilet, a long granite vanity with stainless steel sink and several storage cabinets.The cockpit is detailed for comfort as well. A port side lounger extends all the way down one side, across the transom, then doubles back along the starboard side and ends at the wet bar. The bar’s counter has plenty of room for making snacks plus a sink and refrigerator unit below. A centerline walkthrough gives access to the molded swim platform and the two Mediterranean sun pads. There is also generous storage under the sun pad support hatches.Behind the WheelI really liked the 310’s helm, which was well organized with all the necessary gauges and a GPS on top and switches below. Stereo and VHF controls are right next to the sporty three-spoke wheel and the DTS (digital throttles and shift) engine controls from Mercury. Topping that off is a power assisted helm seat that is extra wide for utmost comfort.I also liked what the 310 has to offer in size, especially in my back yard where the water is rough most of the time. That long running surface tames the chop with no problem. And with twin motors, my guests and I can explore distant destinations with greater confidence. Handling and performance were good for a boat with this much fiberglass, but I felt she had a bit more prop cavitation than I would have preferred, especially in tight slalom maneuvers. Otherwise, if you want to be in a league of your own and have the biggest bowrider at the sand bar this weekend, then the Horizon 310 is it.

    Test Result Highlights

    • Top speed for the Four Winns H310 (2008-) is 42.2 mph (67.9 kph), burning 43.1 gallons per hour (gph) or 163.13 liters per hour (lph).
    • Best cruise for the Four Winns H310 (2008-) is 27.8 mph (44.7 kph), and the boat gets 1.55 miles per gallon (mpg) or 0.66 kilometers per liter (kpl), giving the boat a cruising range of 182 miles (292.9 kilometers).
    • Tested power is 2 x 320-hp MerCruiser 6.2 L (Bravo I).

    Standard and Optional Features

    Marine Electronics

    GPS/Chart Optional
    VHF Radio Optional


    Air Cond./Heat Optional
    CD Stereo Standard
    Head: Fixed Standard
    Shore Power Optional
    Shore Power Optional
    Trim Tabs Standard
    TV/DVD Optional
    Windlass Optional


    Microwave Optional
    Refrigerator Optional

    Exterior Features

    Carpet: Cockpit Standard
    Swim Ladder Standard
    Swim Platform Standard
    Tower: Watersports Optional
    Transom Door Standard
    Transom Shower Standard
    Wet bar Standard


    Bimini Top Standard

    Boats More Than 30 Feet

    Generator Optional


    Hull Warranty
    Limited Lifetime

    Deck Warranty
    Limited Lifetime Yes
    Engine Warranty
    Transferable Extendable
    2 years - Mercruiser or Volvo See Engine Manufacturer See Engine Manufacturer
    Powertrain Warranty
    2 years - Mercruiser or Volvo
    See Engine Manufacturer
    See Engine Manufacturer
    Gelcoat Warranty
    1 Year

    Blistering Warranty
    5 Year No
    Accessories Warranty
    2 year non-structural parts and components Yes
    ISO Certification NMMA Certification Yes
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