Avalon Tropic - 20 Foot 2006 boat specs
Avalon
Avalon Tropic - 20 Foot 2006
2006
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VS
Avalon Windjammer - 18 Foot 2008 boat specs
Avalon
Avalon Windjammer - 18 Foot 2008
2008
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Avalon Tropic - 20 Foot 2006 vs Avalon Windjammer - 18 Foot 2008 — Same Brand, Different Boat

The Avalon Tropic - 20 Foot 2006 vs Avalon Windjammer - 18 Foot 2008 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 Avalon Windjammer - 18 Foot 2008 measures 18,0 feet overall (2008), giving it roughly 16,0 additional feet of deck space compared to the Avalon Tropic - 20 Foot 2006 at 2,0 feet (2006). Weight tells a clearer story for trailering families: the Avalon Windjammer - 18 Foot 2008 tips the scales at 1 491 lbs — 1 333 lbs less than the Avalon Tropic - 20 Foot 2006 at 158 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.

Both boats share a closely matched power ceiling — 90 hp for the Avalon Tropic - 20 Foot 2006 and 75 hp for the Avalon Windjammer - 18 Foot 2008. 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. Both carry nearly identical fuel loads — 24 gal and 24 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Avalon Tropic - 20 Foot 2006 is rated for 9 passengers, while the Avalon Windjammer - 18 Foot 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Avalon Tropic - 20 Foot 2006 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Avalon Tropic - 20 Foot 2006 comes in at 2 lbs per hp versus 20 lbs per hp for the Avalon Windjammer - 18 Foot 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.

Bottom line: Choose the Avalon Tropic - 20 Foot 2006 if your priority is putting more people on the water — it handles 9 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Avalon Windjammer - 18 Foot 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
General Boat Info
MakeAvalon
MakeAvalon
ModelTropic - 20 Foot
ModelWindjammer - 18 Foot
Model Year2006
Model Year2008
Measurements / Dimensions
Weight - Detailw/ furniture: 1,580 lbs
Weight - Detailw/ furniture: 1,491 lbs
Weight - kg716.68
Weight - kg676.31
Weight - lbs.158
Weight - lbs.1491
Width [transom] - DetailDeck: 8 ft
Width [transom] - DetailDeck: 8 ft
Length [deck]20 ft
Length [deck]not available
Length - Feet2
Length - Feet18
Length overall - Detail20 ft. 0 in
Length overall - Detail18 ft. 0 in
Length overall - Meters6.1
Length overall - Meters5.49
Length overall - Inches24
Length overall - Inches216
Pontoon and Inflatable Specific
Tube diameter23 in
Tube diameter23 in
Engine and Drivetrain
Fuel tank capacity - Detail24 gal
Fuel tank capacity - Detail24 gal
Fuel tank capacity - Liters90.85
Fuel tank capacity - Liters90.85
Fuel tank capacity - Gal24
Fuel tank capacity - Gal24
Drive typeOutboard
Drive typeOutboard
Engine max90 hp
Engine max75 hp
Fuel typenot available
Fuel typeGas
Operational Info
Maximum capacity2,005 lbs
Maximum capacity1,850 lbs
Maximum people9
Maximum people8 or 1,480 lbs
Body / Hull
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typePontoon

Avalon Tropic - 20 Foot 2006 vs Avalon Windjammer - 18 Foot 2008 — Common Questions

Which is the larger boat — the Avalon Tropic - 20 Foot 2006 or the Avalon Windjammer - 18 Foot 2008?
The Avalon Windjammer - 18 Foot 2008 is the longer of the two at 18,0 feet overall. The Avalon Tropic - 20 Foot 2006 comes in at 2,0 feet, making it roughly 16,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Avalon Tropic - 20 Foot 2006 or the Avalon Windjammer - 18 Foot 2008?
For trailering, the Avalon Tropic - 20 Foot 2006 has the edge at 158 lbs dry weight versus 1 491 lbs for the Avalon Windjammer - 18 Foot 2008. 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 Avalon Tropic - 20 Foot 2006 is rated to a maximum of 90 hp, giving it the larger power ceiling. The Avalon Windjammer - 18 Foot 2008 tops out at 75 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 Avalon Tropic - 20 Foot 2006 is Coast Guard rated for 9 passengers, while the Avalon Windjammer - 18 Foot 2008 is certified for 8. 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 better power-to-weight ratio?
The Avalon Tropic - 20 Foot 2006 has a better power-to-weight ratio at 2 lbs per hp compared to 20 lbs per hp for the Avalon Windjammer - 18 Foot 2008. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
How do the fuel tanks compare on the Avalon Tropic - 20 Foot 2006 and Avalon Windjammer - 18 Foot 2008?
Both boats carry similar fuel loads — 24 gallons and 24 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Avalon Tropic - 20 Foot 2006 and Avalon Windjammer - 18 Foot 2008 from the same manufacturer?
Yes — both the Avalon Tropic - 20 Foot 2006 and the Avalon Windjammer - 18 Foot 2008 are built by Avalon. 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.