Four Winns HD1 OB RS 2021 boat specs
Four Winns
Four Winns HD1 OB RS 2021
2021
View full specs →
VS
Four Winns HD1 RS 2021 boat specs
Four Winns
Four Winns HD1 RS 2021
2021
View full specs →

Four Winns HD1 OB RS 2021 vs Four Winns HD1 RS 2021 — Same Brand, Different Boat

The Four Winns HD1 OB RS 2021 vs Four Winns HD1 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.

On paper these two are close siblings in the size department — Four Winns HD1 OB RS 2021 at 18,6 ft versus Four Winns HD1 RS 2021 at 18,6 ft. Weight tells a clearer story for trailering families: the Four Winns HD1 RS 2021 tips the scales at 3 000 lbs — 300 lbs less than the Four Winns HD1 OB RS 2021 at 2 700 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 250 hp, the Four Winns HD1 RS 2021 has a 160-hp advantage over the Four Winns HD1 OB RS 2021's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 32 gal and 32 gal — so range won't be a tiebreaker here.

Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: Performance buyers should lean toward the Four Winns HD1 RS 2021 and its 250-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Four Winns HD1 OB RS 2021 with its 90-hp rating is the more economical daily driver.
Measurements / Dimensions
Length overall - Detail18.60 ft
Length overall - Detail18.60 ft
Length - Feet18.6
Length - Feet18.6
Length overall - Meters5.67
Length overall - Meters5.67
Length overall - Inches223
Length overall - Inches223
Beam8.40 ft
Beam8.40 ft
Beam - Meters2.56
Beam - Meters2.56
Beam - Inches101
Beam - Inches101
Draft [max] - Detail2.75 ft
Draft [max] - Detail3.50 ft
Draft [max] - Meters0.84
Draft [max] - Meters1.07
Draft [max] - Inches33
Draft [max] - Inches42
Draft Min1.33 ft
Draft Min1.50 ft
Displacement2700.00 lbs
Displacement3000.00 lbs
Engine and Drivetrain
Fuel tank capacity - Gal32
Fuel tank capacity - Gal32
Fuel tank capacity - Liters121.13
Fuel tank capacity - Liters121.13
Engine makeMercury
Engine makeMercury
Engine model90 EXLPT CT 4S
Engine modelnot available
Horsepower90 hp
Horsepower250 hp
Fuel typeGas
Fuel typenot available
Operational Info
TrailerableYes
TrailerableYes
Boat typePower
Boat typePower

Four Winns HD1 OB RS 2021 vs Four Winns HD1 RS 2021 — Common Questions

Which is the larger boat — the Four Winns HD1 OB RS 2021 or the Four Winns HD1 RS 2021?
The Four Winns HD1 RS 2021 is the longer of the two at 18,6 feet overall. The Four Winns HD1 OB RS 2021 comes in at 18,6 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Four Winns HD1 OB RS 2021 or the Four Winns HD1 RS 2021?
For trailering, the Four Winns HD1 OB RS 2021 has the edge at 2 700 lbs dry weight versus 3 000 lbs for the Four Winns HD1 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 HD1 RS 2021 is rated to a maximum of 250 hp, giving it the larger power ceiling. The Four Winns HD1 OB RS 2021 tops out at 90 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 HD1 OB RS 2021 is Coast Guard rated for 5 passengers, while the Four Winns HD1 RS 2021 is certified for 5. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Four Winns HD1 OB RS 2021 and Four Winns HD1 RS 2021 share an 8.40 ft beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
How do the fuel tanks compare on the Four Winns HD1 OB RS 2021 and Four Winns HD1 RS 2021?
Both boats carry similar fuel loads — 32 gallons and 32 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Four Winns HD1 OB RS 2021 and Four Winns HD1 RS 2021 from the same manufacturer?
Yes — both the Four Winns HD1 OB RS 2021 and the Four Winns HD1 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.