Four Winns 310 Horizon 2007 vs Four Winns HD2 OB RS 2021 - Boat Spec Comparison

Q: Which is the larger boat — the Four Winns 310 Horizon 2007 or the Four Winns HD2 OB RS 2021?

The Four Winns 310 Horizon 2007 is the longer of the two at 31,0 feet overall. The Four Winns HD2 OB RS 2021 comes in at 20,1 feet, making it roughly 10,9 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which is easier to trailer — the Four Winns 310 Horizon 2007 or the Four Winns HD2 OB RS 2021?

For trailering, the Four Winns 310 Horizon 2007 has the edge at 74 lbs dry weight versus 3 200 lbs for the Four Winns HD2 OB RS 2021. 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.

Q: What is the maximum horsepower rating for these boats?

The Four Winns HD2 OB RS 2021 has a documented max rating of 115 hp. Engine specifications for the Four Winns 310 Horizon 2007 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Four Winns 310 Horizon 2007 is Coast Guard rated for 9 passengers, while the Four Winns HD2 OB RS 2021 is certified for 6. 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.

Q: Which boat is wider, and does it affect trailering?

The Four Winns 310 Horizon 2007 measures 116" wide, compared to 101" for the Four Winns HD2 OB RS 2021. 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.

Q: Which boat has the larger fuel tank — the Four Winns 310 Horizon 2007 or the Four Winns HD2 OB RS 2021?

The Four Winns 310 Horizon 2007 has the bigger tank at 13 gallons, versus 4 gallons on the Four Winns HD2 OB RS 2021. That 9-gallon difference translates to roughly 27–45 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Four Winns 310 Horizon 2007 and Four Winns HD2 OB RS 2021 from the same manufacturer?

Yes — both the Four Winns 310 Horizon 2007 and the Four Winns HD2 OB RS 2021 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.

Boat Comparison

Four Winns 310 Horizon 2007 vs Four Winns HD2 OB RS 2021

Four Winns

Four Winns 310 Horizon 2007

2007

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Four Winns

Four Winns HD2 OB RS 2021

2021

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Detailed Evaluation & Buyer Recommendation

Four Winns 310 Horizon 2007 vs Four Winns HD2 OB RS 2021 — Same Brand, Different Boat

The Four Winns 310 Horizon 2007 vs Four Winns HD2 OB RS 2021 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 10,9 additional feet of deck space compared to the Four Winns HD2 OB RS 2021 at 20,1 feet (2021). Weight tells a clearer story for trailering families: the Four Winns HD2 OB RS 2021 tips the scales at 3 200 lbs — 3 126 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.

The Four Winns HD2 OB RS 2021 tops out at 115 hp. Engine specs for the Four Winns 310 Horizon 2007 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Four Winns 310 Horizon 2007 carries 13 gallons versus 4 gallons in the Four Winns HD2 OB RS 2021. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

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 HD2 OB RS 2021 caps at 6. 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 HD2 OB RS 2021 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.

General Boat Info

MakeFour Winns

Makenot available

Model310 Horizon

Modelnot available

Model Year2007

Model Yearnot available

Measurements / Dimensions

Beam9 ft. 8 in. (2.84 m)

Beam8.40 ft

Beam - Meters2.95

Beam - Meters2.56

Beam - Inches116

Beam - Inches101

Deadrise21℃

Deadrisenot available

Draft [drive up] - Detail24 in. (61 cm)

Draft [drive up] - Detailnot available

Draft [drive up] meters0.61

Draft [drive up] metersnot available

Draft [drive up] inches24

Draft [drive up] inchesnot available

Draft [max] - Detail35 in. (89 cm)

Draft [max] - Detail3.50 ft

Draft [max] - Meters0.89

Draft [max] - Meters1.07

Draft [max] - Inches35

Draft [max] - Inches42

Weight - DetailWith Engine: 7,400-8,360 lbs. (3,360-3,790 kg)

Weight - Detailnot available

Weight - kg3356.58

Weight - kgnot available

Weight - lbs.74

Weight - lbs.not available

Length - Meters9.55

Length - Metersnot available

Length - Feet31

Length - Feet20.1

Length - Inches4

Length - Inchesnot available

Length overall - Detail31 ft. 4 in. (9.55 m)

Length overall - Detail20.10 ft

Length overall - Meters9.55

Length overall - Meters6.13

Length overall - Inches376

Length overall - Inches241

Draft Minnot available

Draft Min1.50 ft

Displacementnot available

Displacement3200.00 lbs

Body / Hull

Hull materialFiberglass

Hull materialnot available

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 - Detailnot available

Fuel tank capacity - Liters492.1

Fuel tank capacity - Liters151.42

Fuel tank capacity - Gal13

Fuel tank capacity - Gal4

Fuel typeGas

Drive typeI/O

Drive typenot available

Engine makenot available

Engine makeMercury 115 EXLPT CT 4S

Engine modelnot available

Engine model115 EXLPT CT 4S

Horsepowernot available

Horsepower115 hp

Operational Info

Boat typenot available

Boat typePower

Four Winns 310 Horizon 2007 vs Four Winns HD2 OB RS 2021 — Common Questions

Which is the larger boat — the Four Winns 310 Horizon 2007 or the Four Winns HD2 OB RS 2021?

The Four Winns 310 Horizon 2007 is the longer of the two at 31,0 feet overall. The Four Winns HD2 OB RS 2021 comes in at 20,1 feet, making it roughly 10,9 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 HD2 OB RS 2021?

For trailering, the Four Winns 310 Horizon 2007 has the edge at 74 lbs dry weight versus 3 200 lbs for the Four Winns HD2 OB RS 2021. 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.

What is the maximum horsepower rating for these boats?

The Four Winns HD2 OB RS 2021 has a documented max rating of 115 hp. Engine specifications for the Four Winns 310 Horizon 2007 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

How many people can each boat hold?

The Four Winns 310 Horizon 2007 is Coast Guard rated for 9 passengers, while the Four Winns HD2 OB RS 2021 is certified for 6. 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 101" for the Four Winns HD2 OB RS 2021. 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 HD2 OB RS 2021?

The Four Winns 310 Horizon 2007 has the bigger tank at 13 gallons, versus 4 gallons on the Four Winns HD2 OB RS 2021. That 9-gallon difference translates to roughly 27–45 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Four Winns 310 Horizon 2007 and Four Winns HD2 OB RS 2021 from the same manufacturer?

Yes — both the Four Winns 310 Horizon 2007 and the Four Winns HD2 OB RS 2021 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.

← Four Winns 310 Horizon 2007 full specs ← Four Winns HD2 OB RS 2021 full specs