Mariah DX213 Deck Boat 2008 boat specs
Mariah
Mariah DX213 Deck Boat 2008
2008
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VS
Mariah SX21 2009 boat specs
Mariah
Mariah SX21 2009
2009
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Mariah DX213 Deck Boat 2008 vs Mariah SX21 2009 — Which Modified Vee Fits Your Needs?

When two boats share the same hull type — in this case both the Mariah DX213 Deck Boat 2008 and the Mariah SX21 2009 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?

Size is the most obvious dividing line here. The Mariah DX213 Deck Boat 2008 measures 21,0 feet overall (2008), giving it roughly 19,0 additional feet of deck space compared to the Mariah SX21 2009 at 2,0 feet (2009). 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.

Both boats share a closely matched power ceiling — 260 hp for the Mariah DX213 Deck Boat 2008 and 270 hp for the Mariah SX21 2009. 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 — 45 gal and 44 gal — so range won't be a tiebreaker here.

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: The Mariah DX213 Deck Boat 2008 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Mariah SX21 2009 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
MakeMariah
MakeMariah
ModelDX213 Deck Boat
ModelSX21
Model Year2008
Model Year2009
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 - Detail3,000 lbs. (1,361 kg) Maximum: 3,600 lbs. (1,633 kg)
Weight - kg1542.21
Weight - kg1632.93
Weight - lbs.34
Weight - lbs.36
Length - Meters6.4
Length - Meters6.3
Length - Feet21
Length - Feet2
Length overall - Detail21 ft. 0 in. (6.4 m)
Length overall - Detail20 ft. 9 in. (6.3 m)
Length overall - Meters6.4
Length overall - Meters6.32
Length overall - Inches252
Length overall - Inches249
Length - Inchesnot available
Length - Inches9
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail45 gal. (170 l)
Fuel tank capacity - Detail44 gal. (167 l)
Fuel tank capacity - Liters170.34
Fuel tank capacity - Liters166.56
Fuel tank capacity - Gal45
Fuel tank capacity - Gal44
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typeI/O
Engine max260 hp (194 kW)
Engine max270 hp (201 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 speed41-55 mph

Mariah DX213 Deck Boat 2008 vs Mariah SX21 2009 — Common Questions

Which is the larger boat — the Mariah DX213 Deck Boat 2008 or the Mariah SX21 2009?
The Mariah DX213 Deck Boat 2008 is the longer of the two at 21,0 feet overall. The Mariah SX21 2009 comes in at 2,0 feet, making it roughly 19,0 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 SX21 2009?
For trailering, the Mariah DX213 Deck Boat 2008 has the edge at 34 lbs dry weight versus 36 lbs for the Mariah SX21 2009. 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 SX21 2009 is rated to a maximum of 270 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 SX21 2009 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 SX21 2009 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.
How do the fuel tanks compare on the Mariah DX213 Deck Boat 2008 and Mariah SX21 2009?
Both boats carry similar fuel loads — 45 gallons and 44 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Mariah DX213 Deck Boat 2008 and Mariah SX21 2009 from the same manufacturer?
Yes — both the Mariah DX213 Deck Boat 2008 and the Mariah SX21 2009 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.