Crownline 21 Classic 2006 boat specs
Crownline
Crownline 21 Classic 2006
2006
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VS
Crownline 235 SS 2011 boat specs
Crownline
Crownline 235 SS 2011
2011
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Crownline 21 Classic 2006 vs Crownline 235 SS 2011 — Same Brand, Different Boat

The Crownline 21 Classic 2006 vs Crownline 235 SS 2011 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 Crownline 235 SS 2011 measures 24,0 feet overall (2011), giving it roughly 22,0 additional feet of deck space compared to the Crownline 21 Classic 2006 at 2,0 feet (2006). At 37 lbs and 43 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

Both boats share a closely matched power ceiling — 320 hp for the Crownline 21 Classic 2006 and 320 hp for the Crownline 235 SS 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Crownline 235 SS 2011 carries 62 gallons versus 41 gallons in the Crownline 21 Classic 2006. 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 Crownline 235 SS 2011 is rated for 11 passengers, while the Crownline 21 Classic 2006 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crownline 235 SS 2011 could be the deciding factor.

Bottom line: Choose the Crownline 235 SS 2011 if your priority is putting more people on the water — it handles 11 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Crownline 21 Classic 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.
General Boat Info
MakeCrownline
MakeCrownline
Model21 Classic
Model235 SS
Model Year2006
Model Year2011
Measurements / Dimensions
Beam102 in. (2.5 m)
Beam102 in. (2.59 m)
Beam - Meters2.59
Beam - Meters2.59
Beam - Inches102
Beam - Inches102
Bridge clearance - Detail49.25 in. (1.3 m)
Bridge clearance - Detail56 in. (1.42 m)
Bridge clearance - Meters1.24
Bridge clearance - Meters1.42
Bridge clearance - Inches49.25
Bridge clearance - Inches56
Deadrise16℃
Deadrise21℃
Draft [drive up] - Detail16 in. (41 cm)
Draft [drive up] - Detail19 in. (48 cm)
Draft [drive up] meters0.41
Draft [drive up] meters0.48
Draft [drive up] inches16
Draft [drive up] inches19
Draft [max] - Detail30 in. (76 cm)
Draft [max] - Detail33 in. (84 cm)
Draft [max] - Meters0.76
Draft [max] - Meters0.84
Draft [max] - Inches3
Draft [max] - Inches33
Weight - Detail3,500 - 3,700 lbs. (1,588 - 1,678 kg)
Weight - Detail4,100 - 4,300 lbs. (1,860 - 1,950 kg)
Weight - kg1678.29
Weight - kg1950.45
Weight - lbs.37
Weight - lbs.43
Length - Meters6.13
Length - Metersnot available
Length - Feet2
Length - Feet24
Length - Inches1
Length - Inchesnot available
Length overall - Detail20 ft. 10 in. (6.13 m)
Length overall - Detail24 ft. (7.31 m)
Length overall - Meters6.35
Length overall - Meters7.32
Length overall - Inches25
Length overall - Inches288
Engine and Drivetrain
Engine/s standardMercruiser 5.0 l Alpha 220 hp
Engine/s standardnot available
Fuel tank capacity - Detail41 gal. (155 l)
Fuel tank capacity - Detail62 gal. (235 l)
Fuel tank capacity - Liters155.2
Fuel tank capacity - Liters234.7
Fuel tank capacity - Gal41
Fuel tank capacity - Gal62
Drive typeI/O
Drive typeI/O
Engine max320 hp
Engine max320 php
Engine makenot available
Engine makeMercury
Engine modelnot available
Engine model5.0 l MPI Bravo III
Fuel typenot available
Fuel typeGas
Horsepowernot available
Horsepower260 php
Operational Info
Maximum capacity1,442 lbs. (654 kg)
Maximum capacity1,583 lbs. (718 kg)
Maximum people1
Maximum people11
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeDeep Vee

Crownline 21 Classic 2006 vs Crownline 235 SS 2011 — Common Questions

Which is the larger boat — the Crownline 21 Classic 2006 or the Crownline 235 SS 2011?
The Crownline 235 SS 2011 is the longer of the two at 24,0 feet overall. The Crownline 21 Classic 2006 comes in at 2,0 feet, making it roughly 22,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Crownline 21 Classic 2006 or the Crownline 235 SS 2011?
For trailering, the Crownline 21 Classic 2006 has the edge at 37 lbs dry weight versus 43 lbs for the Crownline 235 SS 2011. 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.
How many people can each boat hold?
The Crownline 21 Classic 2006 is Coast Guard rated for 1 passengers, while the Crownline 235 SS 2011 is certified for 11. 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 Crownline 21 Classic 2006 and Crownline 235 SS 2011 share an 102 in. (2.5 m) 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 Crownline 21 Classic 2006 or the Crownline 235 SS 2011?
The Crownline 235 SS 2011 has the bigger tank at 62 gallons, versus 41 gallons on the Crownline 21 Classic 2006. That 21-gallon difference translates to roughly 63–105 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Crownline 21 Classic 2006 and Crownline 235 SS 2011 from the same manufacturer?
Yes — both the Crownline 21 Classic 2006 and the Crownline 235 SS 2011 are built by Crownline. 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.