ThunderJet Alexis - 20 ft.  2008 boat specs
ThunderJet
ThunderJet Alexis - 20 ft. 2008
2008
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VS
ThunderJet Havasu 2008 boat specs
ThunderJet
ThunderJet Havasu 2008
2008
View full specs →

ThunderJet Alexis - 20 ft. 2008 vs ThunderJet Havasu 2008: A Close Look at Two Modified-V Boats

Both the ThunderJet Alexis - 20 ft. 2008 and the ThunderJet Havasu 2008 are modified-V designs, both built in aluminium, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Both boats share a closely matched power ceiling - 425 hp for the ThunderJet Alexis - 20 ft. 2008 and 425 hp for the ThunderJet Havasu 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 - 50 gal and 50 gal - so range won't be a tiebreaker here.

Both boats are rated for 8 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: The ThunderJet Alexis - 20 ft. 2008 and ThunderJet Havasu 2008 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeThunderJet
MakeThunderJet
ModelAlexis - 20 ft.
ModelHavasu
Model Year2008
Model Year2008
Measurements / Dimensions
Beam96 in.
Beam90 in.
Beam - Meters2.44
Beam - Meters2.29
Beam - Inches96
Beam - Inches90
Width [transom] - Detail34 in.
Width [transom] - Detail31 in.
Height - DetailSides: 34 in.
Height - DetailSides: 31 in.
Height - Meters0.86
Height - Meters0.79
Height - Inches34
Height - Inches31
Length - Feet20
Length - Feet20
Length overall - Detail20 ft. 0 in.
Length overall - Detail20 ft. 0 in.
Length overall - Meters6.1
Length overall - Meters6.1
Length overall - Inches240
Length overall - Inches240
Deadrisenot available
Deadrise14℃
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.190 in.
Hull thickness0.190 in.
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Engine/s standardCarbureted Vortec 350
Engine/s standard350 Carbureted; 250 hp
Jet pumpAmerican Turbine SD 309
Jet pumpAmerican Turbine SD 309
Fuel tank capacity - Detail50 gal.
Fuel tank capacity - Detail50 gal.
Fuel tank capacity - Liters189.27
Fuel tank capacity - Liters189.27
Fuel tank capacity - Gal50
Fuel tank capacity - Gal50
Fuel typeGas
Fuel typeGas
Drive typeJet Drive
Drive typeJet Drive
Engine max425 hp
Engine max425 hp
Operational Info
Maximum capacity1,800 lbs.
Maximum capacity1,800 lbs.
Maximum people8 / 1,750 lbs.
Maximum people8 / 1,750 lbs.

ThunderJet Alexis - 20 ft. 2008 vs ThunderJet Havasu 2008 - Common Questions

Which is the larger boat - the ThunderJet Alexis - 20 ft. 2008 or the ThunderJet Havasu 2008?
The ThunderJet Havasu 2008 is the longer of the two at 20,0 feet overall. The ThunderJet Alexis - 20 ft. 2008 comes in at 20,0 feet, making it roughly 0,0 ft shorter - a meaningful difference in deck room and overall on-water presence.
How many people can each boat hold?
The ThunderJet Alexis - 20 ft. 2008 is Coast Guard rated for 8 passengers, while the ThunderJet Havasu 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 is wider, and does it affect trailering?
The ThunderJet Alexis - 20 ft. 2008 measures 96" wide, compared to 90" for the ThunderJet Havasu 2008. 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.
How do the fuel tanks compare on the ThunderJet Alexis - 20 ft. 2008 and ThunderJet Havasu 2008?
Both boats carry similar fuel loads - 50 gallons and 50 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the ThunderJet Alexis - 20 ft. 2008 and ThunderJet Havasu 2008 from the same manufacturer?
Yes - both the ThunderJet Alexis - 20 ft. 2008 and the ThunderJet Havasu 2008 are built by ThunderJet. 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.