Crestliner Grand Cayman 2485 I/O Tritoon 2008 boat specs
Crestliner
Crestliner Grand Cayman 2485 I/O Tritoon 2008
2008
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VS
Crestliner Sportsman 18 SS SC 2007 boat specs
Crestliner
Crestliner Sportsman 18 SS SC 2007
2007
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Crestliner Grand Cayman 2485 I/O Tritoon 2008 vs Crestliner Sportsman 18 SS SC 2007 — Same Brand, Different Boat

Matching a pontoon Crestliner Grand Cayman 2485 I/O Tritoon 2008 against a modified vee Crestliner Sportsman 18 SS SC 2007 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Crestliner Grand Cayman 2485 I/O Tritoon 2008 measures 23,0 feet overall (2008), giving it roughly 5,0 additional feet of deck space compared to the Crestliner Sportsman 18 SS SC 2007 at 18,0 feet (2007). At 2 lbs and 67 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The Crestliner Sportsman 18 SS SC 2007 tops out at 50 hp. Engine specs for the Crestliner Grand Cayman 2485 I/O Tritoon 2008 aren't listed — confirm with a dealer before selecting an outboard.

For family outings this is probably the sharpest distinction between the two. The Crestliner Grand Cayman 2485 I/O Tritoon 2008 is rated for 12 passengers, while the Crestliner Sportsman 18 SS SC 2007 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 2485 I/O Tritoon 2008 could be the deciding factor.

Bottom line: Choose the Crestliner Grand Cayman 2485 I/O Tritoon 2008 if your priority is putting more people on the water — it handles 12 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Crestliner Sportsman 18 SS SC 2007 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 2485 I/O Tritoon
ModelSportsman 18 SS SC
Model Year2008
Model Year2007
Measurements / Dimensions
Beam102 in. (259 cm)
Beam78 in. (198 cm)
Beam - Meters2.59
Beam - Meters1.98
Beam - Inches102
Beam - Inches78
Weight - Detail2,000 lbs. (907 kg) with 4.3 l
Weight - Detail670 lbs. (304 kg)
Weight - kg907.18
Weight - kg303.91
Weight - lbs.2
Weight - lbs.67
Length - Meters7.1
Length - Meters5.5
Length - Feet23
Length - Feet18
Length - Inches6
Length - Inchesnot available
Length overall - Detail23 ft. 6 in. (7.1 m)
Length overall - Detail18 ft. 0 in. (5.5 m)
Length overall - Meters7.16
Length overall - Meters5.49
Length overall - Inches282
Length overall - Inches216
Deadrisenot available
Deadrise10℃
Width [transom] - Detailnot available
Width [transom] - Detail78 in. (198 cm)
Height - Detailnot available
Height - Detail33.5 in. (85 cm)
Height - Metersnot available
Height - Meters0.86
Height - Inchesnot available
Height - Inches33.5
Height [transom]not available
Height [transom]20 in. (51 cm)
Body / Hull
Hull materialAluminum
Hull materialnot available
Hull thickness0.080 in
Hull thicknessBottom: .090 Sides: .080 Transom: .125
Hull typePontoon
Hull typeModified Vee
Pontoon and Inflatable Specific
Tube diameter27 in. (69 cm)
Tube diameternot available
Number of tubes3
Number of tubesnot available
Engine and Drivetrain
Fuel tank capacity - Detail56 gal. (212 l)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters211.98
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal56
Fuel tank capacity - Galnot available
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typeOutboard
Engine/s standardnot available
Engine/s standard25EL
Engine maxnot available
Engine max50 hp
Operational Info
Maximum capacity3,613 lbs. (1,638 kg)
Maximum capacity1,390 lbs. (630 kg)
Maximum people12
Maximum people7

Crestliner Grand Cayman 2485 I/O Tritoon 2008 vs Crestliner Sportsman 18 SS SC 2007 — Common Questions

Which is the larger boat — the Crestliner Grand Cayman 2485 I/O Tritoon 2008 or the Crestliner Sportsman 18 SS SC 2007?
The Crestliner Grand Cayman 2485 I/O Tritoon 2008 is the longer of the two at 23,0 feet overall. The Crestliner Sportsman 18 SS SC 2007 comes in at 18,0 feet, making it roughly 5,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Crestliner Grand Cayman 2485 I/O Tritoon 2008 or the Crestliner Sportsman 18 SS SC 2007?
For trailering, the Crestliner Grand Cayman 2485 I/O Tritoon 2008 has the edge at 2 lbs dry weight versus 67 lbs for the Crestliner Sportsman 18 SS SC 2007. 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 Crestliner Sportsman 18 SS SC 2007 has a documented max rating of 50 hp. Engine specifications for the Crestliner Grand Cayman 2485 I/O Tritoon 2008 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 Crestliner Grand Cayman 2485 I/O Tritoon 2008 is Coast Guard rated for 12 passengers, while the Crestliner Sportsman 18 SS SC 2007 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 Grand Cayman 2485 I/O Tritoon 2008 measures 102" wide, compared to 78" for the Crestliner Sportsman 18 SS SC 2007. 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 Grand Cayman 2485 I/O Tritoon 2008 and Crestliner Sportsman 18 SS SC 2007 from the same manufacturer?
Yes — both the Crestliner Grand Cayman 2485 I/O Tritoon 2008 and the Crestliner Sportsman 18 SS SC 2007 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.