Mariah R18 2012 vs Mariah Shabah Z278 2000 - Boat Spec Comparison

Q: Which is easier to trailer — the Mariah R18 2012 or the Mariah Shabah Z278 2000?

For trailering, the Mariah R18 2012 has the edge at 33 lbs dry weight versus 61 lbs for the Mariah Shabah Z278 2000. 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.

Q: What is the maximum horsepower rating for these boats?

The Mariah R18 2012 has a documented max rating of 225 hp. Engine specifications for the Mariah Shabah Z278 2000 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Mariah R18 2012 is Coast Guard rated for 8 passengers, while the Mariah Shabah Z278 2000 is certified for 12. 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.

Q: Which boat is wider, and does it affect trailering?

The Mariah Shabah Z278 2000 measures 102" wide, compared to 94" for the Mariah R18 2012. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.

Q: Which boat has the larger fuel tank — the Mariah R18 2012 or the Mariah Shabah Z278 2000?

The Mariah Shabah Z278 2000 has the bigger tank at 125 gallons, versus 22 gallons on the Mariah R18 2012. That 103-gallon difference translates to roughly 309–515 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Mariah R18 2012 and Mariah Shabah Z278 2000 from the same manufacturer?

Yes — both the Mariah R18 2012 and the Mariah Shabah Z278 2000 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.

Boat Comparison

Mariah R18 2012 vs Mariah Shabah Z278 2000

Mariah

Mariah R18 2012

2012

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Mariah

Mariah Shabah Z278 2000

2000

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Detailed Evaluation & Buyer Recommendation

Mariah R18 2012 vs Mariah Shabah Z278 2000 — Same Brand, Different Boat

The Mariah R18 2012 vs Mariah Shabah Z278 2000 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

The Mariah R18 2012 carries a rated maximum of 225 hp. Engine data for the Mariah Shabah Z278 2000 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Mariah Shabah Z278 2000 carries 125 gallons versus 22 gallons in the Mariah R18 2012. 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 Mariah Shabah Z278 2000 is rated for 12 passengers, while the Mariah R18 2012 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Mariah Shabah Z278 2000 could be the deciding factor.

Bottom line: Choose the Mariah Shabah Z278 2000 if your priority is putting more people on the water — it handles 12 passengers and at 0,0 ft it has the deck room to back that rating up comfortably. The Mariah R18 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.

General Boat Info

MakeMariah

ModelR18

ModelShabah Z278

Model Year2012

Model Year2

Measurements / Dimensions

Beam7 ft. 10 in. (2.3 m)

Beam102"

Beam - Meters2.39

Beam - Meters2.59

Beam - Inches94

Beam - Inches102

Deadrise18°

Deadrise24 degrees

Weight - DetailDry: 2,800 lbs. (1,270 kg) Max: 3,300 lbs. (1,497 kg)

Weight - Detail6100 lbs 2767kgs

Weight - kg1496.85

Weight - kg2766.91

Weight - lbs.33

Weight - lbs.61

Length - Feet18.33

Length - Feetnot available

Length overall - Detail18 ft. 4 in. (5.5 m)

Length overall - Detail27'

Length overall - Meters5.59

Length overall - Meters8.23

Length overall - Inches22

Length overall - Inches324

Draft [drive up] - Detailnot available

Draft [drive up] - Detail22"

Draft [drive up] metersnot available

Draft [drive up] meters0.56

Draft [drive up] inchesnot available

Draft [drive up] inches22

Draft [max] - Detailnot available

Draft [max] - Detail39"

Draft [max] - Metersnot available

Draft [max] - Meters0.99

Draft [max] - Inchesnot available

Draft [max] - Inches39

Height - Detailnot available

Height - Detail68" Vertical Clearance

Height - Metersnot available

Height - Meters1.73

Height - Inchesnot available

Height - Inches68

Body / Hull

Hull materialAluminum

Hull materialFiberglass

Hull typeModified Vee

Hull typenot available

Engine and Drivetrain

Fuel tank capacity - Detail22 gal. (83 l)

Fuel tank capacity - Detail125 gal 473 ltr

Fuel tank capacity - Liters83.28

Fuel tank capacity - Liters473.18

Fuel tank capacity - Gal22

Fuel tank capacity - Gal125

Fuel typeGas

Fuel typenot available

Drive typeI/O

Drive typenot available

Horsepower225 hp (168 kW)

Horsepowernot available

Performance

Maximum speed40 - 45 mph

Maximum speednot available

Operational Info

Maximum capacity1,250 lbs. (567 kg)

Maximum capacitynot available

Maximum people8

Maximum people12 person

Headnot available

HeadPortable

Headroomnot available

Headroom60"

Water capacitynot available

Water capacity15 gal

Trailer Info

Trailer - Detailnot available

Trailer - DetailOptional

Mariah R18 2012 vs Mariah Shabah Z278 2000 — Common Questions

Which is easier to trailer — the Mariah R18 2012 or the Mariah Shabah Z278 2000?

For trailering, the Mariah R18 2012 has the edge at 33 lbs dry weight versus 61 lbs for the Mariah Shabah Z278 2000. 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.

What is the maximum horsepower rating for these boats?

The Mariah R18 2012 has a documented max rating of 225 hp. Engine specifications for the Mariah Shabah Z278 2000 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

How many people can each boat hold?

The Mariah R18 2012 is Coast Guard rated for 8 passengers, while the Mariah Shabah Z278 2000 is certified for 12. 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.

Which boat is wider, and does it affect trailering?

The Mariah Shabah Z278 2000 measures 102" wide, compared to 94" for the Mariah R18 2012. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.

Which boat has the larger fuel tank — the Mariah R18 2012 or the Mariah Shabah Z278 2000?

The Mariah Shabah Z278 2000 has the bigger tank at 125 gallons, versus 22 gallons on the Mariah R18 2012. That 103-gallon difference translates to roughly 309–515 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Mariah R18 2012 and Mariah Shabah Z278 2000 from the same manufacturer?

Yes — both the Mariah R18 2012 and the Mariah Shabah Z278 2000 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.

← Mariah R18 2012 full specs ← Mariah Shabah Z278 2000 full specs