Donzi 35 ZF Open 2007 vs Donzi Z-21 1987 - Boat Spec Comparison

Q: Which is the larger boat - the Donzi 35 ZF Open 2007 or the Donzi Z-21 1987?

The Donzi 35 ZF Open 2007 is the longer of the two at 33,0 feet overall. The Donzi Z-21 1987 comes in at 21,0 feet, making it roughly 12,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The Donzi 35 ZF Open 2007 is rated to a maximum of 825 hp, giving it the larger power ceiling. The Donzi Z-21 1987 tops out at 350 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 Donzi 35 ZF Open 2007 is Coast Guard rated for 10 passengers, while the Donzi Z-21 1987 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 has the larger fuel tank - the Donzi 35 ZF Open 2007 or the Donzi Z-21 1987?

The Donzi 35 ZF Open 2007 has the bigger tank at 269 gallons, versus 66 gallons on the Donzi Z-21 1987. That 203-gallon difference translates to roughly 609–1015 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Donzi 35 ZF Open 2007 and Donzi Z-21 1987 from the same manufacturer?

Yes - both the Donzi 35 ZF Open 2007 and the Donzi Z-21 1987 are built by Donzi. 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

Donzi 35 ZF Open 2007 vs Donzi Z-21 1987

Donzi

Donzi 35 ZF Open 2007

2007

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Donzi

Donzi Z-21 1987

1987

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Detailed Evaluation & Buyer Recommendation

Donzi 35 ZF Open 2007 vs Donzi Z-21 1987: Same Brand, Different Boat

The Donzi 35 ZF Open 2007 vs Donzi Z-21 1987 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 825 hp, the Donzi 35 ZF Open 2007 has a 475-hp advantage over the Donzi Z-21 1987's 350-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Donzi 35 ZF Open 2007 carries 269 gallons versus 66 gallons in the Donzi Z-21 1987. 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 Donzi 35 ZF Open 2007 is rated for 10 passengers, while the Donzi Z-21 1987 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Donzi 35 ZF Open 2007 could be the deciding factor.

Bottom line: Choose the Donzi 35 ZF Open 2007 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 Donzi Z-21 1987 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

Model Year2007

Model Yearnot available

Model35 ZF Open

Modelnot available

MakeDonzi

Makenot available

Measurements / Dimensions

Length overall - Detail33 ft. 4 in. (10.2 m)

Length overall - Detail21.00 ft

Length - Feet33

Length - Feet21

Length overall - Meters10.16

Length overall - Meters6.4

Length overall - Inches400

Length overall - Inches252

Draft [max] - Detail35 in. (1.14 m)

Draft [max] - Detailnot available

Draft [max] - Meters0.89

Draft [max] - Metersnot available

Draft [max] - Inches35

Draft [max] - Inchesnot available

Draft Min1.92 ft

Draft Minnot available

Weight - Detail8,000 lbs. (3,629 kg)

Weight - Detailnot available

Beam9 ft. 2 in. (2.79 m)

Beamnot available

Deadrise22℃ Z-Tech

Deadrisenot available

Beam - Meters2.79

Beam - Metersnot available

Bridge clearance - Detail7 ft. 2 in. (2.18 m) w/T-Top: 7 ft. 9 in. (2.36 m) w/Arch: 8 ft. 8 in. (2.64 m)

Bridge clearance - Detailnot available

Draft [drive up] meters0.58

Draft [drive up] metersnot available

Weight - kg3628.74

Weight - kgnot available

Draft [drive up] inches23

Draft [drive up] inchesnot available

Draft [drive up] - Detail23 in. (0.84 m)

Draft [drive up] - Detailnot available

Length - Inches4

Length - Inchesnot available

Bridge clearance - Inches104

Bridge clearance - Inchesnot available

Bridge clearance - Meters2.64

Bridge clearance - Metersnot available

Beam - Inches110

Beam - Inchesnot available

Length - Meters10.2

Length - Metersnot available

Weight - lbs.8000

Weight - lbs.not available

Body / Hull

Hull materialFiberglass

Hull materialnot available

Engine and Drivetrain

Fuel tank capacity - Gal269

Fuel tank capacity - Gal66

Fuel tank capacity - Liters1018.28

Fuel tank capacity - Liters249.84

Engine makeMercury

Engine makeMercruizer

Horsepower300 hp

Horsepower350 hp

Fuel typeGas

Drive typeoutboard

Drive typeinboard

Engine max825 hp (615.20 kW)

Engine maxnot available

Fuel tank capacity - Detail269 gal. (1,097.8 l)

Fuel tank capacity - Detailnot available

Operational Info

Water capacity14 gal. (53 l)

Water capacitynot available

Boat typePower

HeadEnclosed in Console w/Freshwater Shower & Sink

Headnot available

Donzi 35 ZF Open 2007 vs Donzi Z-21 1987 - Common Questions

Which is the larger boat - the Donzi 35 ZF Open 2007 or the Donzi Z-21 1987?

The Donzi 35 ZF Open 2007 is the longer of the two at 33,0 feet overall. The Donzi Z-21 1987 comes in at 21,0 feet, making it roughly 12,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The Donzi 35 ZF Open 2007 is rated to a maximum of 825 hp, giving it the larger power ceiling. The Donzi Z-21 1987 tops out at 350 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 Donzi 35 ZF Open 2007 is Coast Guard rated for 10 passengers, while the Donzi Z-21 1987 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 has the larger fuel tank - the Donzi 35 ZF Open 2007 or the Donzi Z-21 1987?

The Donzi 35 ZF Open 2007 has the bigger tank at 269 gallons, versus 66 gallons on the Donzi Z-21 1987. That 203-gallon difference translates to roughly 609–1015 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Donzi 35 ZF Open 2007 and Donzi Z-21 1987 from the same manufacturer?

Yes - both the Donzi 35 ZF Open 2007 and the Donzi Z-21 1987 are built by Donzi. 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.

← Donzi 35 ZF Open 2007 full specs ← Donzi Z-21 1987 full specs