Detailed Evaluation & Buyer Recommendation
ThunderJet Alexis - 21 ft. 2008 vs ThunderJet TJ Offshore 2008 — Which Modified Vee Fits Your Needs?
When two boats share the same hull type — in this case both the ThunderJet Alexis - 21 ft. 2008 and the ThunderJet TJ Offshore 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 ThunderJet Alexis - 21 ft. 2008 carries a rated maximum of 425 hp. Engine data for the ThunderJet TJ Offshore 2008 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
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 TJ Offshore 2008 at 28,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The ThunderJet Alexis - 21 ft. 2008 at 21,0 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 - 21 ft
ModelTJ Offshore
Model Year2008
Model Year2008
Measurements / Dimensions
Beam - Meters2.44
Beam - Meters2.74
Beam - Inches96
Beam - Inches108
Width [transom] - Detail34 in
Width [transom] - Detail25 in
Height - DetailSides: 34 in
Height - DetailSides: 42 in
Height - Meters0.86
Height - Meters1.07
Height - Inches34
Height - Inches42
Length - Feet21
Length - Feet28
Length overall - Detail21 ft. 0 in
Length overall - Detail28 ft. 0 in
Length overall - Meters6.4
Length overall - Meters8.53
Length overall - Inches252
Length overall - Inches336
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.190 in
Hull thickness0.250 in
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Engine/s standardCarbureted Vortec 35
Engine/s standardnot available
Jet pumpAmerican Turbine SD 309
Jet pumpnot available
Fuel tank capacity - Detail50 gal
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters189.27
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal5
Fuel tank capacity - Galnot available
Drive typeJet Drive
Drive typeOutboard - Twin
Engine max425 hp
Engine maxnot available
Operational Info
Maximum capacity1,800 lbs
Maximum capacitynot available
Maximum people8 / 1,750 lbs
Maximum peoplenot available