Crestliner Canadian 18 SC 2004 boat specs
Crestliner
Crestliner Canadian 18 SC 2004
2004
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VS
Crestliner Sport Classic 1685 2008 boat specs
Crestliner
Crestliner Sport Classic 1685 2008
2008
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Crestliner Canadian 18 SC 2004 vs Crestliner Sport Classic 1685 2008 — Same Brand, Different Boat

The Crestliner Canadian 18 SC 2004 vs Crestliner Sport Classic 1685 2008 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 power gap is worth calling out. Rated to 50 hp, the Crestliner Sport Classic 1685 2008 has a 44-hp advantage over the Crestliner Canadian 18 SC 2004's 6-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Crestliner Sport Classic 1685 2008 is rated for 7 passengers, while the Crestliner Canadian 18 SC 2004 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner Sport Classic 1685 2008 could be the deciding factor.

Bottom line: Choose the Crestliner Sport Classic 1685 2008 if your priority is putting more people on the water — it handles 7 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Crestliner Canadian 18 SC 2004 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
MakeCrestliner
MakeCrestliner
ModelCanadian 18 SC
ModelSport Classic 1685
Model Year2004
Model Year2008
Measurements / Dimensions
Beam79 in
Beam101 in. (257 cm)
Beam - Meters2.01
Beam - Meters2.57
Beam - Inches79
Beam - Inches101
Weight - Detail810 lbs
Weight - Detail1,575 lbs. (714 kg)
Weight - kg367.41
Weight - kg714.41
Weight - lbs.81
Weight - lbs.1575
Height - Detail32 in
Height - Detailnot available
Height - Meters0.81
Height - Metersnot available
Height - Inches32
Height - Inchesnot available
Height [transom]20 in
Height [transom]not available
Length overall - Detail18 ft
Length overall - Detail16 ft. 6 in. (5.0 m)
Length overall - Meters5.49
Length overall - Meters5.03
Length overall - Inches216
Length overall - Inches198
Length - Metersnot available
Length - Meters5
Length - Feetnot available
Length - Feet16
Length - Inchesnot available
Length - Inches6
Engine and Drivetrain
Fuel tank capacity - Detail17 gal
Fuel tank capacity - DetailPortable
Fuel tank capacity - Liters64.35
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal17
Fuel tank capacity - Galnot available
Engine max6
Engine max50 hp
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum capacity1000 lbs
Maximum capacity1,425 lbs. (647 kg)
Maximum people5 Persons
Maximum people7
Body / Hull
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typePontoon
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter23 in. (58 cm)
Tube gaugenot available
Tube gauge0.080 in
Number of tubesnot available
Number of tubes2

Crestliner Canadian 18 SC 2004 vs Crestliner Sport Classic 1685 2008 — Common Questions

Which is easier to trailer — the Crestliner Canadian 18 SC 2004 or the Crestliner Sport Classic 1685 2008?
For trailering, the Crestliner Canadian 18 SC 2004 has the edge at 81 lbs dry weight versus 1 575 lbs for the Crestliner Sport Classic 1685 2008. 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 Crestliner Sport Classic 1685 2008 is rated to a maximum of 50 hp, giving it the larger power ceiling. The Crestliner Canadian 18 SC 2004 tops out at 6 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 Crestliner Canadian 18 SC 2004 is Coast Guard rated for 5 passengers, while the Crestliner Sport Classic 1685 2008 is certified for 7. 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 Crestliner Sport Classic 1685 2008 measures 101" wide, compared to 79" for the Crestliner Canadian 18 SC 2004. 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 Crestliner Canadian 18 SC 2004 and Crestliner Sport Classic 1685 2008 from the same manufacturer?
Yes — both the Crestliner Canadian 18 SC 2004 and the Crestliner Sport Classic 1685 2008 are built by Crestliner. 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.