Four Winns HD2 OB RS 2021 boat specs
Four Winns
Four Winns HD2 OB RS 2021
2021
View full specs →
VS
Four Winns V318 2008 boat specs
Four Winns
Four Winns V318 2008
2008
View full specs →

Four Winns HD2 OB RS 2021 vs Four Winns V318 2008 — Same Brand, Different Boat

The Four Winns HD2 OB RS 2021 vs Four Winns V318 2008 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 V318 2008 measures 33,0 feet overall (2008), giving it roughly 12,9 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 — 3 188 lbs more than the Four Winns V318 2008 at 12 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 power gap is worth calling out. Rated to 300 hp, the Four Winns V318 2008 has a 185-hp advantage over the Four Winns HD2 OB RS 2021's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Four Winns V318 2008 carries 17 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 V318 2008 is rated for 10 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 V318 2008 could be the deciding factor.

Bottom line: Choose the Four Winns V318 2008 if your priority is putting more people on the water — it handles 10 passengers and at 33,0 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.
Measurements / Dimensions
Length overall - Detail20.10 ft
Length overall - Detail33 ft. 0 in. (10.06 m)
Length - Feet20.1
Length - Feet33
Length overall - Meters6.13
Length overall - Meters10.06
Length overall - Inches241
Length overall - Inches396
Beam8.40 ft
Beam10 ft. 9 in. (3.28 m)
Beam - Meters2.56
Beam - Meters3.28
Beam - Inches101
Beam - Inches129
Draft [max] - Detail3.50 ft
Draft [max] - Detail38 in. (97 cm)
Draft [max] - Meters1.07
Draft [max] - Meters0.97
Draft [max] - Inches42
Draft [max] - Inches38
Draft Min1.50 ft
Draft Minnot available
Displacement3200.00 lbs
Displacementnot available
Bridge clearance - Detailnot available
Bridge clearance - DetailWith Arch: 10 ft. 6 in. (3.2 m) excludes electronics
Bridge clearance - Metersnot available
Bridge clearance - Meters3.2
Bridge clearance - Inchesnot available
Bridge clearance - Inches126
Deadrisenot available
Deadrise19℃
Draft [drive up] - Detailnot available
Draft [drive up] - Detail26 in. (66 cm)
Draft [drive up] metersnot available
Draft [drive up] meters0.66
Draft [drive up] inchesnot available
Draft [drive up] inches26
Weight - Detailnot available
Weight - DetailWith Engine: 11,260 - 12,000 lbs. (5,110 - 5,440 kg)
Weight - kgnot available
Weight - kg5443.1
Weight - lbs.not available
Weight - lbs.12
Height - Detailnot available
Height - DetailWith Arch: 12 ft. 2 in. (3.71 m) excludes electronics
Height - Metersnot available
Height - Meters3.71
Height - Inchesnot available
Height - Inches146
Length - Metersnot available
Length - Meters10.06
Engine and Drivetrain
Fuel tank capacity - Gal4
Fuel tank capacity - Gal17
Fuel tank capacity - Liters151.42
Fuel tank capacity - Liters643.52
Engine makeMercury 115 EXLPT CT 4S
Engine makenot available
Engine model115 EXLPT CT 4S
Engine modelnot available
Horsepower115 hp
Horsepowernot available
Fuel typeGas
Fuel typeGas or Diesel
Engine/s standardnot available
Engine/s standardVolvo Penta Twin 5.0 GXi/DP 270 hp
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail170 gal. (644 l)
Drive typenot available
Drive typeI/O - Twin
Engine maxnot available
Engine maxTwin 300 hp
Operational Info
Boat typePower
Boat typenot available
Headroomnot available
HeadroomMaximum: 6 ft. 5 in. (1.96 m)
Water capacitynot available
Water capacityPotable: 35 gal. (132 l)
Water heater capacitynot available
Water heater capacity10.5 gal
Holding tank capacity - Detailnot available
Holding tank capacity - Detail27 gal. (104 l)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters102.21
Holding tank capacity - Galnot available
Holding tank capacity - Gal27
General Boat Info
Makenot available
MakeFour Winns
Modelnot available
ModelV318
Model Yearnot available
Model Year2008
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee

Four Winns HD2 OB RS 2021 vs Four Winns V318 2008 — Common Questions

Which is the larger boat — the Four Winns HD2 OB RS 2021 or the Four Winns V318 2008?
The Four Winns V318 2008 is the longer of the two at 33,0 feet overall. The Four Winns HD2 OB RS 2021 comes in at 20,1 feet, making it roughly 12,9 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Four Winns HD2 OB RS 2021 or the Four Winns V318 2008?
For trailering, the Four Winns V318 2008 has the edge at 12 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.
Which boat can handle a bigger outboard?
The Four Winns V318 2008 is rated to a maximum of 300 hp, giving it the larger power ceiling. The Four Winns HD2 OB RS 2021 tops out at 115 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Four Winns HD2 OB RS 2021 is Coast Guard rated for 6 passengers, while the Four Winns V318 2008 is certified for 10. 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 V318 2008 measures 129" 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 HD2 OB RS 2021 or the Four Winns V318 2008?
The Four Winns V318 2008 has the bigger tank at 17 gallons, versus 4 gallons on the Four Winns HD2 OB RS 2021. That 13-gallon difference translates to roughly 39–65 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Four Winns HD2 OB RS 2021 and Four Winns V318 2008 from the same manufacturer?
Yes — both the Four Winns HD2 OB RS 2021 and the Four Winns V318 2008 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.