Detailed Evaluation & Buyer Recommendation
Crestliner Grand Cayman 2685 I/O 2010 vs Crestliner Sport Classic 1685 2005 — Same Brand, Different Boat
The Crestliner Grand Cayman 2685 I/O 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.
Size is the most obvious dividing line here. The Crestliner Grand Cayman 2685 I/O 2010 measures 25,5 feet overall (2010), giving it roughly 9,5 additional feet of deck space compared to the Crestliner Sport Classic 1685 2005 at 16,0 feet (2005). Weight tells a clearer story for trailering families: the Crestliner Grand Cayman 2685 I/O 2010 tips the scales at 3 719 lbs — 2 144 lbs more than the Crestliner Sport Classic 1685 2005 at 1 575 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 Grand Cayman 2685 I/O 2010 carries a rated maximum of 3 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 Grand Cayman 2685 I/O 2010 is rated for 14 passengers, while the Crestliner Sport Classic 1685 2005 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner Grand Cayman 2685 I/O 2010 could be the deciding factor.
Bottom line: Choose the Crestliner Grand Cayman 2685 I/O 2010 if your priority is putting more people on the water — it handles 14 passengers and at 25,5 ft it has the deck room to back that rating up comfortably. The Crestliner Sport Classic 1685 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.
General Boat Info
MakeCrestliner
MakeCrestliner
ModelGrand Cayman 2685 I/O
ModelSport Classic 1685
Model Year201
Model Year2005
Measurements / Dimensions
Beam102 in. (259 cm)
Beam96 in
Beam - Meters2.59
Beam - Meters2.44
Beam - Inches102
Beam - Inches96
Weight - Detail3,400 lbs. (1,542 kg) 3,719 lbs. (1,687 kg) with Tritoon
Weight - Detail1,575 lbs
Weight - kg1686.91
Weight - kg714.41
Weight - lbs.3719
Weight - lbs.1575
Length [at waterline]24 ft. (7.3 m) tube length
Length [at waterline]not available
Length - Feet25.5
Length - Feet16
Length overall - Detail25 ft. 6 in. (7.8 m)
Length overall - Detail16 ft. 6 in
Length overall - Meters7.77
Length overall - Meters5.03
Length overall - Inches306
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 typePontoon
Hull typenot available
Pontoon and Inflatable Specific
Tube diameter27 in. (69 cm)
Tube diameter23 in
Tube gauge0.080 in. tube 0.090 in. nose cone
Tube gaugenot available
Number of tubes2 or 3
Number of tubesnot available
Engine and Drivetrain
Fuel tank capacity - Detail35 gal. (132 l) 56 gal. (212 l) with Tritoon
Fuel tank capacity - DetailPortable
Fuel tank capacity - Liters211.98
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal56
Fuel tank capacity - Galnot available
Fuel typeGas
Fuel typenot available
Drive typeI/O
Drive typeOutBoard
Engine max3.0 - 5.0 l 3.0 - 5.7 l with Tritoon
Engine maxnot available
Engine/s standardnot available
Engine/s standard50 hp
Operational Info
Maximum capacity2,000 lbs. (907 kg)
Maximum capacity1,426 lbs
Maximum people14
Maximum people7