Smoker Craft Infinity M-818 CR 2005 boat specs
Smoker Craft
Smoker Craft Infinity M-818 CR 2005
2005
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VS
Smoker Craft Ultima 172 2012 boat specs
Smoker Craft
Smoker Craft Ultima 172 2012
2012
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Smoker Craft Infinity M-818 CR 2005 vs Smoker Craft Ultima 172 2012 — Same Brand, Different Boat

The Smoker Craft Infinity M-818 CR 2005 vs Smoker Craft Ultima 172 2012 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.

On paper these two are close siblings in the size department — Smoker Craft Infinity M-818 CR 2005 at 18,0 ft versus Smoker Craft Ultima 172 2012 at 17,2 ft. Weight tells a clearer story for trailering families: the Smoker Craft Ultima 172 2012 tips the scales at 1 325 lbs — 1 183 lbs less than the Smoker Craft Infinity M-818 CR 2005 at 142 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The Smoker Craft Ultima 172 2012 tops out at 140 hp. Engine specs for the Smoker Craft Infinity M-818 CR 2005 aren't listed — confirm with a dealer before selecting an outboard.

For family outings this is probably the sharpest distinction between the two. The Smoker Craft Infinity M-818 CR 2005 is rated for 9 passengers, while the Smoker Craft Ultima 172 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Smoker Craft Infinity M-818 CR 2005 could be the deciding factor.

Bottom line: Choose the Smoker Craft Infinity M-818 CR 2005 if your priority is putting more people on the water — it handles 9 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Smoker Craft Ultima 172 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.
General Boat Info
MakeSmoker Craft
MakeSmoker Craft
ModelInfinity M-818 CR
ModelUltima 172
Model Year2005
Model Year2012
Measurements / Dimensions
Beam96 in
Beam91 in
Beam - Meters2.44
Beam - Meters2.31
Beam - Inches96
Beam - Inches91
Weight - Detail1,420 lbs
Weight - Detail1,325 lbs
Weight - kg644.1
Weight - kg601.01
Weight - lbs.142
Weight - lbs.1325
Length - Feet18
Length - Feet17.17
Length - Inches3
Length - Inchesnot available
Length overall - Detail18 ft. 3 in
Length overall - Detail17 ft. 2 in
Length overall - Meters5.56
Length overall - Meters5.23
Length overall - Inches219
Length overall - Inches206
Depth - Detailnot available
Depth - Detail26 in
Depth - Centimetersnot available
Depth - Centimeters66.04
Depth - Inchesnot available
Depth - Inches26
Width [transom] - Detailnot available
Width [transom] - Detail88 in
Height [transom]not available
Height [transom]LS
Pontoon and Inflatable Specific
Tube diameter23 in
Tube diameternot available
Engine and Drivetrain
Engine/s standard50 hp
Engine/s standardnot available
Fuel tank capacity - DetailPortable
Fuel tank capacity - Detail24 gal
Drive typeOutBoard
Drive typeOutboard
Engine makenot available
Engine makeMercury
Engine modelnot available
Engine model90 ELPT Optimax
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters90.85
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal24
Fuel typenot available
Fuel typeGas
Engine maxnot available
Engine max140 hp
Operational Info
Maximum capacity1,750 lbs
Maximum capacity1,425 lbs
Maximum people9
Maximum people6
Body / Hull
Hull materialnot available
Hull materialAluminum
Hull thicknessnot available
Hull thicknessBottom: 0.100 in. Side: 0.080 in. Rib: 0.100 in
Hull typenot available
Hull typeModified Vee
Trailer Info
Trailer - Detailnot available
Trailer - DetailYes

Smoker Craft Infinity M-818 CR 2005 vs Smoker Craft Ultima 172 2012 — Common Questions

Which is the larger boat — the Smoker Craft Infinity M-818 CR 2005 or the Smoker Craft Ultima 172 2012?
The Smoker Craft Infinity M-818 CR 2005 is the longer of the two at 18,0 feet overall. The Smoker Craft Ultima 172 2012 comes in at 17,2 feet, making it roughly 0,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Smoker Craft Infinity M-818 CR 2005 or the Smoker Craft Ultima 172 2012?
For trailering, the Smoker Craft Infinity M-818 CR 2005 has the edge at 142 lbs dry weight versus 1 325 lbs for the Smoker Craft Ultima 172 2012. 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 Smoker Craft Ultima 172 2012 has a documented max rating of 140 hp. Engine specifications for the Smoker Craft Infinity M-818 CR 2005 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 Smoker Craft Infinity M-818 CR 2005 is Coast Guard rated for 9 passengers, while the Smoker Craft Ultima 172 2012 is certified for 6. 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 Smoker Craft Infinity M-818 CR 2005 measures 96" wide, compared to 91" for the Smoker Craft Ultima 172 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.
Are the Smoker Craft Infinity M-818 CR 2005 and Smoker Craft Ultima 172 2012 from the same manufacturer?
Yes — both the Smoker Craft Infinity M-818 CR 2005 and the Smoker Craft Ultima 172 2012 are built by Smoker Craft. 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.