Detailed Evaluation & Buyer Recommendation
Crestliner Backwater 1870 SC/CC 2010 vs Crestliner Sport Classic 1685 2005 — Same Brand, Different Boat
The Crestliner Backwater 1870 SC/CC 2010 vs Crestliner Sport Classic 1685 2005 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 — Crestliner Backwater 1870 SC/CC 2010 at 18,0 ft versus Crestliner Sport Classic 1685 2005 at 16,0 ft. Weight tells a clearer story for trailering families: the Crestliner Sport Classic 1685 2005 tips the scales at 1 575 lbs — 400 lbs less than the Crestliner Backwater 1870 SC/CC 2010 at 1 175 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 Crestliner Backwater 1870 SC/CC 2010 carries a rated maximum of 90 hp. Engine data for the Crestliner Sport Classic 1685 2005 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Crestliner Sport Classic 1685 2005 is rated for 7 passengers, while the Crestliner Backwater 1870 SC/CC 2010 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 2005 could be the deciding factor.
Bottom line: Choose the Crestliner Sport Classic 1685 2005 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 Backwater 1870 SC/CC 2010 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
ModelBackwater 1870 SC/CC
ModelSport Classic 1685
Model Year201
Model Year2005
Measurements / Dimensions
Beam90.5 in. (230 cm)
Beam96 in
Beam - Meters2.31
Beam - Meters2.44
Beam - Inches90.5
Beam - Inches96
Deadrise10℃
Deadrisenot available
Weight - Detail1,175 lbs. (533 kg)
Weight - Detail1,575 lbs
Weight - kg532.97
Weight - kg714.41
Weight - lbs.1175
Weight - lbs.1575
Width [transom] - Detail70 in. (178 cm)
Width [transom] - Detailnot available
Height - Detail23 in. (58 cm)
Height - Detailnot available
Height - Meters0.58
Height - Metersnot available
Height - Inches23
Height - Inchesnot available
Height [transom]20 in. (51 cm)
Height [transom]not available
Length - Feet18
Length - Feet16
Length overall - Detail18 ft. 0 in. (5.5 m)
Length overall - Detail16 ft. 6 in
Length overall - Meters5.49
Length overall - Meters5.03
Length overall - Inches216
Length overall - Inches198
Length [deck]not available
Length [deck]15 ft. 8 in
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialAluminum
Hull materialnot available
Hull thickness0.100 in
Hull thicknessnot available
Hull typeModified Vee
Hull typenot available
Engine and Drivetrain
Fuel tank capacity - DetailPortable
Fuel tank capacity - DetailPortable
Fuel typeGas
Fuel typenot available
Drive typeOutboard
Drive typeOutBoard
Engine max90 hp (outboard) 115 hp (jet)
Engine maxnot available
Engine/s standardnot available
Engine/s standard50 hp
Operational Info
Maximum capacity1,355 lbs. (614 kg)
Maximum capacity1,426 lbs
Maximum people5
Maximum people7
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter23 in