Mariah DX213 Deck Boat 2008 boat specs
Mariah
Mariah DX213 Deck Boat 2008
2008
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VS
Mariah G21  2011 boat specs
Mariah
Mariah G21 2011
2011
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Mariah DX213 Deck Boat 2008 vs Mariah G21 2011 — A Close Look at Two Modified Vees

When two boats share the same hull type — in this case both the Mariah DX213 Deck Boat 2008 and the Mariah G21 2011 are modified vee designs with fiberglass 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?

On paper these two are close siblings in the size department — Mariah DX213 Deck Boat 2008 at 21,0 ft versus Mariah G21 2011 at 21,4 ft. At 34 lbs and 36 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 300 hp, the Mariah G21 2011 has a 40-hp advantage over the Mariah DX213 Deck Boat 2008's 260-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Mariah DX213 Deck Boat 2008 carries 45 gallons versus 35 gallons in the Mariah G21 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 1 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: Performance buyers should lean toward the Mariah G21 2011 and its 300-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Mariah DX213 Deck Boat 2008 with its 260-hp rating is the more economical daily driver.
General Boat Info
MakeMariah
MakeMariah
ModelDX213 Deck Boat
ModelG21
Model Year2008
Model Year2011
Measurements / Dimensions
Beam8 ft. 6 in. (2.6 m)
Beam8 ft. 6 in. (2.6 m)
Beam - Meters2.59
Beam - Meters2.59
Beam - Inches102
Beam - Inches102
Deadrise16℃
Deadrise20°
Weight - Detail3,400 lbs. (1,542 kg)
Weight - DetailDry: 3,600 lbs. (1,633 kg)
Weight - kg1542.21
Weight - kg1632.93
Weight - lbs.34
Weight - lbs.36
Length - Meters6.4
Length - Meters6.4
Length - Feet21
Length - Feet21.42
Length overall - Detail21 ft. 0 in. (6.4 m)
Length overall - Detail21 ft. 5 in. (6.4 m)
Length overall - Meters6.4
Length overall - Meters6.53
Length overall - Inches252
Length overall - Inches257
Body / Hull
Hull materialFiberglass
Hull materialAluminum
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail45 gal. (170 l)
Fuel tank capacity - Detail35 gal. (133 l)
Fuel tank capacity - Liters170.34
Fuel tank capacity - Liters132.49
Fuel tank capacity - Gal45
Fuel tank capacity - Gal35
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typenot available
Engine max260 hp (194 kW)
Engine maxnot available
Horsepowernot available
Horsepower300 hp (224 kW)
Operational Info
Maximum capacityTotal: 1,750 lbs. (794 kg) Maximum: 4,000 lbs. (1,816 kg)
Maximum capacity1,750 lbs. (794 kg)
Maximum people1
Maximum people1
Performance
Maximum speednot available
Maximum speed41 - 53 mph

Mariah DX213 Deck Boat 2008 vs Mariah G21 2011 — Common Questions

Which is the larger boat — the Mariah DX213 Deck Boat 2008 or the Mariah G21 2011?
The Mariah G21 2011 is the longer of the two at 21,4 feet overall. The Mariah DX213 Deck Boat 2008 comes in at 21,0 feet, making it roughly 0,4 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Mariah DX213 Deck Boat 2008 or the Mariah G21 2011?
For trailering, the Mariah DX213 Deck Boat 2008 has the edge at 34 lbs dry weight versus 36 lbs for the Mariah G21 2011. 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 Mariah G21 2011 is rated to a maximum of 300 hp, giving it the larger power ceiling. The Mariah DX213 Deck Boat 2008 tops out at 260 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 Mariah DX213 Deck Boat 2008 is Coast Guard rated for 1 passengers, while the Mariah G21 2011 is certified for 1. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Mariah DX213 Deck Boat 2008 and Mariah G21 2011 share an 8 ft. 6 in. (2.6 m) beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank — the Mariah DX213 Deck Boat 2008 or the Mariah G21 2011?
The Mariah DX213 Deck Boat 2008 has the bigger tank at 45 gallons, versus 35 gallons on the Mariah G21 2011. That 10-gallon difference translates to roughly 30–50 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Mariah DX213 Deck Boat 2008 and Mariah G21 2011 from the same manufacturer?
Yes — both the Mariah DX213 Deck Boat 2008 and the Mariah G21 2011 are built by Mariah. 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.