Detailed Evaluation & Buyer Recommendation
ThunderJet Alexis OB Offshore - 21 ft. 2008 vs ThunderJet Envoy - Northern Edition 2010 — A Close Look at Two Modified Vees
When two boats share the same hull type — in this case both the ThunderJet Alexis OB Offshore - 21 ft. 2008 and the ThunderJet Envoy - Northern Edition 2010 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 475-hp advantage over the ThunderJet Envoy - Northern Edition 2010's 25-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the ThunderJet Envoy - Northern Edition 2010 carries 48 gallons versus 5 gallons in the ThunderJet Alexis OB Offshore - 21 ft. 2008. 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 ThunderJet Alexis OB Offshore - 21 ft. 2008 is rated for 6 passengers, while the ThunderJet Envoy - Northern Edition 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Alexis OB Offshore - 21 ft. 2008 could be the deciding factor.
Bottom line: Choose the ThunderJet Alexis OB Offshore - 21 ft. 2008 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Envoy - Northern Edition 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.
General Boat Info
MakeThunderJet
MakeThunderJet
ModelAlexis OB Offshore - 21 ft
ModelEnvoy - Northern Edition
Model Year2008
Model Year201
Measurements / Dimensions
Beam - Meters2.59
Beam - Meters2.13
Beam - Inches102
Beam - Inches84
Width [transom] - Detail40 in
Width [transom] - Detail66 in
Height - DetailSides: 40 in
Height - Detailnot available
Height - Meters1.02
Height - Metersnot available
Height - Inches4
Height - Inchesnot available
Length - Feet21
Length - Feet19
Length overall - Detail21 ft. 0 in
Length overall - Detail19 ft. 0 in
Length overall - Meters6.4
Length overall - Meters5.79
Length overall - Inches252
Length overall - Inches228
Deadrisenot available
Deadrise12° Entry: 40°
Height [transom]not available
Height [transom]31 in
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.190 in
Hull thicknessnot available
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail50 gal
Fuel tank capacity - Detail48 gal
Fuel tank capacity - Liters189.27
Fuel tank capacity - Liters181.7
Fuel tank capacity - Gal5
Fuel tank capacity - Gal48
Drive typeOutboard
Drive typeInboard
Engine max500 hp
Engine maxnot available
Engine/s standardnot available
Engine/s standardVortec 305
Horsepowernot available
Horsepower25