Detailed Evaluation & Buyer Recommendation
ThunderJet Alexis 2010 vs ThunderJet Alexis OB Offshore - 21 ft. 2008 — Which Modified Vee Fits Your Needs?
When two boats share the same hull type — in this case both the ThunderJet Alexis 2010 and the ThunderJet Alexis OB Offshore - 21 ft. 2008 are modified vee designs with aluminum construction — 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?
The power gap is worth calling out. Rated to 500 hp, the ThunderJet Alexis OB Offshore - 21 ft. 2008 has a 175-hp advantage over the ThunderJet Alexis 2010's 325-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 5 gal and 5 gal — so range won't be a tiebreaker here.
Bottom line: The ThunderJet Alexis OB Offshore - 21 ft. 2008 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The ThunderJet Alexis 2010 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
MakeThunderJet
MakeThunderJet
ModelAlexis
ModelAlexis OB Offshore - 21 ft
Model Year201
Model Year2008
Measurements / Dimensions
Beam - Meters2.44
Beam - Meters2.59
Beam - Inches96
Beam - Inches102
Width [transom] - Detail72 in
Width [transom] - Detail40 in
Height [transom]34 in
Height [transom]not available
Length - Feet2
Length - Feet21
Height - Detailnot available
Height - DetailSides: 40 in
Height - Metersnot available
Height - Meters1.02
Height - Inchesnot available
Height - Inches4
Length overall - Detailnot available
Length overall - Detail21 ft. 0 in
Length overall - Metersnot available
Length overall - Meters6.4
Length overall - Inchesnot available
Length overall - Inches252
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull typeModified Vee
Hull typeModified Vee
Hull thicknessnot available
Hull thickness0.190 in
Engine and Drivetrain
Engine/s standard5.7 l Vortec
Engine/s standardnot available
Fuel tank capacity - Detail50 gal
Fuel tank capacity - Detail50 gal
Fuel tank capacity - Liters189.27
Fuel tank capacity - Liters189.27
Fuel tank capacity - Gal5
Fuel tank capacity - Gal5
Drive typeInboard
Drive typeOutboard
Horsepower325
Horsepowernot available
Engine maxnot available
Engine max500 hp