Duckworth 721 2011 vs Duckworth Magnum Inboard 23 ft. 2007 - Boat Spec Comparison

Q: Which is the larger boat - the Duckworth 721 2011 or the Duckworth Magnum Inboard 23 ft. 2007?

The Duckworth Magnum Inboard 23 ft. 2007 is the longer of the two at 23,0 feet overall. The Duckworth 721 2011 comes in at 21,0 feet, making it roughly 2,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

Q: How many people can each boat hold?

The Duckworth 721 2011 is Coast Guard rated for 6 passengers, while the Duckworth Magnum Inboard 23 ft. 2007 is certified for 7. 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: Do these boats require an oversize trailer permit to tow on US highways?

Both the Duckworth 721 2011 and Duckworth Magnum Inboard 23 ft. 2007 share an 102 in. 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.

Q: Which boat has the larger fuel tank - the Duckworth 721 2011 or the Duckworth Magnum Inboard 23 ft. 2007?

The Duckworth Magnum Inboard 23 ft. 2007 has the bigger tank at 80 gallons, versus 42 gallons on the Duckworth 721 2011. That 38-gallon difference translates to roughly 114–190 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Duckworth 721 2011 and Duckworth Magnum Inboard 23 ft. 2007 from the same manufacturer?

Yes - both the Duckworth 721 2011 and the Duckworth Magnum Inboard 23 ft. 2007 are built by Duckworth. 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

Duckworth 721 2011 vs Duckworth Magnum Inboard 23 ft. 2007

Duckworth

Duckworth 721 2011

2011

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Duckworth

Duckworth Magnum Inboard 23 ft. 2007

2007

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Detailed Evaluation & Buyer Recommendation

Duckworth 721 2011 vs Duckworth Magnum Inboard 23 ft. 2007: Same Brand, Different Boat

The Duckworth 721 2011 is a modified-V design and the Duckworth Magnum Inboard 23 ft. 2007 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

For family outings this is probably the sharpest distinction between the two. The Duckworth Magnum Inboard 23 ft. 2007 is rated for 7 passengers, while the Duckworth 721 2011 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth Magnum Inboard 23 ft. 2007 could be the deciding factor.

Bottom line: Choose the Duckworth Magnum Inboard 23 ft. 2007 if your priority is putting more people on the water - it handles 7 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Duckworth 721 2011 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

MakeDuckworth

Model721

ModelMagnum Inboard 23 ft.

Model Year2011

Model Year2007

Measurements / Dimensions

Beam102 in.

Beam - Meters2.59

Beam - Inches102

DeadriseTransom: 10° constant

Deadrise14℃ at transom

Weight - Detail1,600 lbs.

Weight - Detailnot available

Weight - kg725.75

Weight - kgnot available

Weight - lbs.1600

Weight - lbs.not available

Width [transom] - Detail84 in. (with full length Delta Pad)

Width [transom] - Detail78 in.

Height - DetailSides: 31 in.

Height - Detail36 in.

Height - Meters0.79

Height - Meters0.91

Height - Inches31

Height - Inches36

Length - Feet21

Length - Feet23

Length overall - Detail21 ft.

Length overall - Detail23 ft. 0 in.

Length overall - Meters6.4

Length overall - Meters7.01

Length overall - Inches252

Length overall - Inches276

Body / Hull

Hull materialAluminum

Hull thicknessBottom: 0.190 in. Sides: 0.125 in.

Hull thickness0.125 in.

Hull typeModified Vee

Hull typeDeep vee

Engine and Drivetrain

Fuel tank capacity - Detail42 gal.

Fuel tank capacity - Detail80 gal.

Fuel tank capacity - Liters158.99

Fuel tank capacity - Liters302.83

Fuel tank capacity - Gal42

Fuel tank capacity - Gal80

Fuel typeGas

Drive typeOutboard

Drive typenot available

Engine/s standardnot available

Engine/s standardGM 8.1 l V-8

Duckworth 721 2011 vs Duckworth Magnum Inboard 23 ft. 2007 - Common Questions

Which is the larger boat - the Duckworth 721 2011 or the Duckworth Magnum Inboard 23 ft. 2007?

The Duckworth Magnum Inboard 23 ft. 2007 is the longer of the two at 23,0 feet overall. The Duckworth 721 2011 comes in at 21,0 feet, making it roughly 2,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

How many people can each boat hold?

The Duckworth 721 2011 is Coast Guard rated for 6 passengers, while the Duckworth Magnum Inboard 23 ft. 2007 is certified for 7. 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 Duckworth 721 2011 and Duckworth Magnum Inboard 23 ft. 2007 share an 102 in. 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.

Which boat has the larger fuel tank - the Duckworth 721 2011 or the Duckworth Magnum Inboard 23 ft. 2007?

The Duckworth Magnum Inboard 23 ft. 2007 has the bigger tank at 80 gallons, versus 42 gallons on the Duckworth 721 2011. That 38-gallon difference translates to roughly 114–190 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Duckworth 721 2011 and Duckworth Magnum Inboard 23 ft. 2007 from the same manufacturer?

Yes - both the Duckworth 721 2011 and the Duckworth Magnum Inboard 23 ft. 2007 are built by Duckworth. 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.

← Duckworth 721 2011 full specs ← Duckworth Magnum Inboard 23 ft. 2007 full specs