Four Winns HD3 RS 2021 vs Four Winns V378 2009 - Boat Spec Comparison

Q: Which is the larger boat — the Four Winns HD3 RS 2021 or the Four Winns V378 2009?

The Four Winns V378 2009 is the longer of the two at 37,0 feet overall. The Four Winns HD3 RS 2021 comes in at 24,0 feet, making it roughly 13,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The Four Winns V378 2009 is rated to a maximum of 550 hp, giving it the larger power ceiling. The Four Winns HD3 RS 2021 tops out at 250 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.

Q: How many people can each boat hold?

The Four Winns HD3 RS 2021 is Coast Guard rated for 7 passengers, while the Four Winns V378 2009 is certified for 14. 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 V378 2009 measures 153" wide, compared to 102" for the Four Winns HD3 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 HD3 RS 2021 or the Four Winns V378 2009?

The Four Winns HD3 RS 2021 has the bigger tank at 44 gallons, versus 3 gallons on the Four Winns V378 2009. That 41-gallon difference translates to roughly 123–205 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Four Winns HD3 RS 2021 and Four Winns V378 2009 from the same manufacturer?

Yes — both the Four Winns HD3 RS 2021 and the Four Winns V378 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.

Boat Comparison

Four Winns HD3 RS 2021 vs Four Winns V378 2009

Four Winns

Four Winns HD3 RS 2021

2021

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Four Winns

Four Winns V378 2009

2009

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Detailed Evaluation & Buyer Recommendation

Four Winns HD3 RS 2021 vs Four Winns V378 2009 — Same Brand, Different Boat

The Four Winns HD3 RS 2021 vs Four Winns V378 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.

The power gap is worth calling out. Rated to 550 hp, the Four Winns V378 2009 has a 300-hp advantage over the Four Winns HD3 RS 2021's 250-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 HD3 RS 2021 carries 44 gallons versus 3 gallons in the Four Winns V378 2009. 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 V378 2009 is rated for 14 passengers, while the Four Winns HD3 RS 2021 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Four Winns V378 2009 could be the deciding factor.

Bottom line: Choose the Four Winns V378 2009 if your priority is putting more people on the water — it handles 14 passengers and at 37,0 ft it has the deck room to back that rating up comfortably. The Four Winns HD3 RS 2021 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.

Measurements / Dimensions

Length overall - Detail24.00 ft

Length overall - Detail37 ft. 9 in. (11.51 m)

Length - Feet24

Length - Feet37

Length overall - Meters7.32

Length overall - Meters11.51

Length overall - Inches288

Length overall - Inches453

Beam8.50 ft

Beam12 ft. 9 in. (3.89 m)

Beam - Meters2.59

Beam - Meters3.89

Beam - Inches102

Beam - Inches153

Draft [max] - Detail3.00 ft

Draft [max] - Detail42 in. (107 cm)

Draft [max] - Meters0.91

Draft [max] - Meters1.07

Draft [max] - Inches36

Draft [max] - Inches42

Draft Min1.50 ft

Draft Minnot available

Bridge clearance - Detailnot available

Bridge clearance - DetailWith Arch: 11 ft. 6 in. (3.51 m) excludes electronics

Bridge clearance - Metersnot available

Bridge clearance - Meters3.51

Bridge clearance - Inchesnot available

Bridge clearance - Inches138

Deadrisenot available

Deadrise19℃

Weight - Detailnot available

Weight - Detail20,200 - 20,800 lbs. (9,160 - 9440 kg) with engine

Weight - kgnot available

Weight - kg9434.71

Weight - lbs.not available

Weight - lbs.208

Height - Detailnot available

Height - DetailWith Arch: 13 ft. 4 in. (4.07 m) excludes electronics

Height - Metersnot available

Height - Meters4.06

Height - Inchesnot available

Height - Inches16

Length - Metersnot available

Length - Meters11.51

Length - Inchesnot available

Length - Inches9

Engine and Drivetrain

Fuel tank capacity - Gal44

Fuel tank capacity - Gal3

Fuel tank capacity - Liters166.56

Fuel tank capacity - Liters1135.62

Engine makeMerCruiser

Engine makenot available

Engine model4.5L 250 EC

Engine modelnot available

Horsepower250 hp

Horsepowernot available

Engine/s standardnot available

Engine/s standardVolvo Penta Twin IPS 550 G with Joystick

Fuel tank capacity - Detailnot available

Fuel tank capacity - Detail300 gal. (1,136 l)

Fuel typenot available

Fuel typeGas or Diesel

Drive typenot available

Drive typeI/O - Twin

Engine maxnot available

Engine maxTwin 550 hp

Operational Info

Water capacity12

Water capacityPotable: 66 gal. (250 l) Gray: 45 gal. (170 l)

Boat typePower

Boat typenot available

Headroomnot available

HeadroomMaximum: 6 ft. 5 in. (1.96 m)

Maximum peoplenot available

Maximum people14

Holding tank capacity - Detailnot available

Holding tank capacity - Detail42 gal. (159 l)

Holding tank capacity - Litersnot available

Holding tank capacity - Liters158.99

Holding tank capacity - Galnot available

Holding tank capacity - Gal42

General Boat Info

Makenot available

MakeFour Winns

Modelnot available

ModelV378

Model Yearnot available

Model Year2009

Body / Hull

Hull materialnot available

Hull materialFiberglass

Hull typenot available

Hull typeModified Vee

Four Winns HD3 RS 2021 vs Four Winns V378 2009 — Common Questions

Which is the larger boat — the Four Winns HD3 RS 2021 or the Four Winns V378 2009?

The Four Winns V378 2009 is the longer of the two at 37,0 feet overall. The Four Winns HD3 RS 2021 comes in at 24,0 feet, making it roughly 13,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The Four Winns V378 2009 is rated to a maximum of 550 hp, giving it the larger power ceiling. The Four Winns HD3 RS 2021 tops out at 250 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 HD3 RS 2021 is Coast Guard rated for 7 passengers, while the Four Winns V378 2009 is certified for 14. 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 V378 2009 measures 153" wide, compared to 102" for the Four Winns HD3 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 HD3 RS 2021 or the Four Winns V378 2009?

The Four Winns HD3 RS 2021 has the bigger tank at 44 gallons, versus 3 gallons on the Four Winns V378 2009. That 41-gallon difference translates to roughly 123–205 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Four Winns HD3 RS 2021 and Four Winns V378 2009 from the same manufacturer?

Yes — both the Four Winns HD3 RS 2021 and the Four Winns V378 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.

← Four Winns HD3 RS 2021 full specs ← Four Winns V378 2009 full specs