Crestliner Backwater 1870 Tiller 2010 boat specs
Crestliner
Crestliner Backwater 1870 Tiller 2010
2010
View full specs →
VS
Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 boat specs
Crestliner
Crestliner Grand Cayman 2485 I/O RFL TriToon 2009
2009
View full specs →

Crestliner Backwater 1870 Tiller 2010 vs Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 — Same Brand, Different Boat

Matching a modified vee Crestliner Backwater 1870 Tiller 2010 against a pontoon Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 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 RFL TriToon 2009 measures 23,0 feet overall (2009), giving it roughly 5,0 additional feet of deck space compared to the Crestliner Backwater 1870 Tiller 2010 at 18,0 feet (2010). Weight tells a clearer story for trailering families: the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 tips the scales at 3 613 lbs — 2 498 lbs less than the Crestliner Backwater 1870 Tiller 2010 at 1 115 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 power gap is worth calling out. Rated to 75 hp, the Crestliner Backwater 1870 Tiller 2010 has a 72-hp advantage over the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009's 3-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 Grand Cayman 2485 I/O RFL TriToon 2009 is rated for 12 passengers, while the Crestliner Backwater 1870 Tiller 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 Grand Cayman 2485 I/O RFL TriToon 2009 could be the deciding factor.

Bottom line: Choose the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 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 Backwater 1870 Tiller 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 Tiller
ModelGrand Cayman 2485 I/O RFL TriToon
Model Year201
Model Year2009
Measurements / Dimensions
Beam90.5 in. (230 cm)
Beam102 in. (259 cm)
Beam - Meters2.31
Beam - Meters2.59
Beam - Inches90.5
Beam - Inches102
Deadrise10℃
Deadrisenot available
Weight - Detail1,115 lbs. (506 kg)
Weight - Detail3,613 lbs. (1,638 kg) with 4.3 l
Weight - kg505.76
Weight - kg1638.83
Weight - lbs.1115
Weight - lbs.3613
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 - Feet23
Length overall - Detail18 ft. 0 in. (5.5 m)
Length overall - Detail23 ft. 6 in. (7.1 m)
Length overall - Meters5.49
Length overall - Meters7.16
Length overall - Inches216
Length overall - Inches282
Length - Metersnot available
Length - Meters7.1
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.100 in
Hull thicknessnot available
Hull typeModified Vee
Hull typePontoon
Engine and Drivetrain
Fuel tank capacity - DetailPortable
Fuel tank capacity - Detail56 gal. (212 l)
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeI/O
Engine max75 hp
Engine max3.0 l - 5.0 l
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters211.98
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal56
Operational Info
Maximum capacity1,310 lbs. (585 kg)
Maximum capacity2,000 lbs. (907 kg)
Maximum people5
Maximum people12
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter27 in. (69 cm)
Tube gaugenot available
Tube gauge0.080 in

Crestliner Backwater 1870 Tiller 2010 vs Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 — Common Questions

Which is the larger boat — the Crestliner Backwater 1870 Tiller 2010 or the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009?
The Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 is the longer of the two at 23,0 feet overall. The Crestliner Backwater 1870 Tiller 2010 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 Backwater 1870 Tiller 2010 or the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009?
For trailering, the Crestliner Backwater 1870 Tiller 2010 has the edge at 1 115 lbs dry weight versus 3 613 lbs for the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009. 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 Backwater 1870 Tiller 2010 is rated to a maximum of 75 hp, giving it the larger power ceiling. The Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 tops out at 3 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 Backwater 1870 Tiller 2010 is Coast Guard rated for 5 passengers, while the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 is certified for 12. 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 RFL TriToon 2009 measures 102" wide, compared to 91" for the Crestliner Backwater 1870 Tiller 2010. 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 Backwater 1870 Tiller 2010 and Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 from the same manufacturer?
Yes — both the Crestliner Backwater 1870 Tiller 2010 and the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 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.