Four Winns 310 Horizon 2007 boat specs
Four Winns
Four Winns 310 Horizon 2007
2007
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VS
Four Winns SL222 2009 boat specs
Four Winns
Four Winns SL222 2009
2009
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Four Winns 310 Horizon 2007 vs Four Winns SL222 2009 — Same Brand, Different Boat

The Four Winns 310 Horizon 2007 vs Four Winns SL222 2009 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Size is the most obvious dividing line here. The Four Winns 310 Horizon 2007 measures 31,0 feet overall (2007), giving it roughly 9,0 additional feet of deck space compared to the Four Winns SL222 2009 at 22,0 feet (2009). Weight tells a clearer story for trailering families: the Four Winns SL222 2009 tips the scales at 447 lbs — 373 lbs less than the Four Winns 310 Horizon 2007 at 74 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

For family outings this is probably the sharpest distinction between the two. The Four Winns 310 Horizon 2007 is rated for 9 passengers, while the Four Winns SL222 2009 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Four Winns 310 Horizon 2007 could be the deciding factor.

Bottom line: Choose the Four Winns 310 Horizon 2007 if your priority is putting more people on the water — it handles 9 passengers and at 31,0 ft it has the deck room to back that rating up comfortably. The Four Winns SL222 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.
General Boat Info
MakeFour Winns
MakeFour Winns
Model310 Horizon
ModelSL222
Model Year2007
Model Year2009
Measurements / Dimensions
Beam9 ft. 8 in. (2.84 m)
Beam8 ft. 6 in. (2.59 m)
Beam - Meters2.95
Beam - Meters2.59
Beam - Inches116
Beam - Inches102
Deadrise21℃
Deadrise20℃
Draft [drive up] - Detail24 in. (61 cm)
Draft [drive up] - Detail17 in. (43 cm)
Draft [drive up] meters0.61
Draft [drive up] meters0.43
Draft [drive up] inches24
Draft [drive up] inches17
Draft [max] - Detail35 in. (89 cm)
Draft [max] - Detail33 in. (84 cm)
Draft [max] - Meters0.89
Draft [max] - Meters0.84
Draft [max] - Inches35
Draft [max] - Inches33
Weight - DetailWith Engine: 7,400-8,360 lbs. (3,360-3,790 kg)
Weight - Detail4,420 - 4,470 lbs. (2,000 - 2,030 kg) with engine
Weight - kg3356.58
Weight - kg2027.56
Weight - lbs.74
Weight - lbs.447
Length - Meters9.55
Length - Meters6.88
Length - Feet31
Length - Feet22
Length - Inches4
Length - Inches7
Length overall - Detail31 ft. 4 in. (9.55 m)
Length overall - Detail22 ft. 7 in. (6.88 m)
Length overall - Meters9.55
Length overall - Meters6.88
Length overall - Inches376
Length overall - Inches271
Bridge clearance - Detailnot available
Bridge clearance - Detail4 ft. 2 in. (1.27 m) With Arch: 7 ft. 3 in. (2.21 m)
Bridge clearance - Metersnot available
Bridge clearance - Meters2.21
Bridge clearance - Inchesnot available
Bridge clearance - Inches87
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Engine/s standard8.1 Gi/DP 375 hp Volvo Penta
Engine/s standardnot available
Fuel tank capacity - Detail130 gal. (492 l)
Fuel tank capacity - Detail50 gal. (189 L)
Fuel tank capacity - Liters492.1
Fuel tank capacity - Liters189.27
Fuel tank capacity - Gal13
Fuel tank capacity - Gal5
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typeI/O
Operational Info
Water capacitynot available
Water capacityPotable: 12 gal. (45 L)
Maximum capacitynot available
Maximum capacity1,800 lbs. (816 kg)
Maximum peoplenot available
Maximum people1
Holding tank capacity - Detailnot available
Holding tank capacity - Detail2.6 gal. (9.8 L)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters11.36
Holding tank capacity - Galnot available
Holding tank capacity - Gal2.6
Trailer Info
Trailer - Heightnot available
Trailer - HeightWith Wakeboard Tower Down: 8 ft. 7 in. (2.62 m) With Wakeboard Tower Up: 10 ft. 1 in. (3.08 m)
Trailer - Weightnot available
Trailer - Weight1,256 lbs. (570 ks)

Four Winns 310 Horizon 2007 vs Four Winns SL222 2009 — Common Questions

Which is the larger boat — the Four Winns 310 Horizon 2007 or the Four Winns SL222 2009?
The Four Winns 310 Horizon 2007 is the longer of the two at 31,0 feet overall. The Four Winns SL222 2009 comes in at 22,0 feet, making it roughly 9,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Four Winns 310 Horizon 2007 or the Four Winns SL222 2009?
For trailering, the Four Winns 310 Horizon 2007 has the edge at 74 lbs dry weight versus 447 lbs for the Four Winns SL222 2009. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
How many people can each boat hold?
The Four Winns 310 Horizon 2007 is Coast Guard rated for 9 passengers, while the Four Winns SL222 2009 is certified for 1. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat is wider, and does it affect trailering?
The Four Winns 310 Horizon 2007 measures 116" wide, compared to 102" for the Four Winns SL222 2009. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the Four Winns 310 Horizon 2007 or the Four Winns SL222 2009?
The Four Winns 310 Horizon 2007 has the bigger tank at 13 gallons, versus 5 gallons on the Four Winns SL222 2009. That 8-gallon difference translates to roughly 24–40 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Four Winns 310 Horizon 2007 and Four Winns SL222 2009 from the same manufacturer?
Yes — both the Four Winns 310 Horizon 2007 and the Four Winns SL222 2009 are built by Four Winns. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.