Detailed Evaluation & Buyer Recommendation
Crestliner Backwater Series 1870 SC 2009 vs Crestliner Grand Cayman 2685 I/O RFL TriToon 2009 — Same Brand, Different Boat
Matching a modified vee Crestliner Backwater Series 1870 SC 2009 against a pontoon Crestliner Grand Cayman 2685 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 2685 I/O RFL TriToon 2009 measures 25,0 feet overall (2009), giving it roughly 7,0 additional feet of deck space compared to the Crestliner Backwater Series 1870 SC 2009 at 18,0 feet (2009). Weight tells a clearer story for trailering families: the Crestliner Grand Cayman 2685 I/O RFL TriToon 2009 tips the scales at 3 719 lbs — 2 544 lbs less than the Crestliner Backwater Series 1870 SC 2009 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 power gap is worth calling out. Rated to 90 hp, the Crestliner Backwater Series 1870 SC 2009 has a 87-hp advantage over the Crestliner Grand Cayman 2685 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 2685 I/O RFL TriToon 2009 is rated for 14 passengers, while the Crestliner Backwater Series 1870 SC 2009 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 2685 I/O RFL TriToon 2009 could be the deciding factor.
Bottom line: Choose the Crestliner Grand Cayman 2685 I/O RFL TriToon 2009 if your priority is putting more people on the water — it handles 14 passengers and at 25,0 ft it has the deck room to back that rating up comfortably. The Crestliner Backwater Series 1870 SC 2009 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 Series 1870 SC
ModelGrand Cayman 2685 I/O RFL TriToon
Model Year2009
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 - Detail1,175 lbs. (533 kg) hull
Weight - Detail3,719 lbs. (1,687 kg) with 5.0 l
Weight - kg532.97
Weight - kg1686.91
Weight - lbs.1175
Weight - lbs.3719
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 - Meters5.5
Length - Meters7.8
Length - Feet18
Length - Feet25
Length overall - Detail18 ft. 0 in. (5.5 m)
Length overall - Detail25 ft. 6 in. (7.8 m)
Length overall - Meters5.49
Length overall - Meters7.77
Length overall - Inches216
Length overall - Inches306
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)
Drive typeOutboard
Drive typeI/O
Engine max90 hp (outboard) 115 hp (jet)
Engine max3.0 l - 5.7 l
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters211.98
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal56
Operational Info
Maximum capacity1,290 lbs. (585 kg)
Maximum capacity2,000 lbs. (907 kg)
Maximum people5
Maximum people14
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter27 in. (69 cm)
Tube gaugenot available
Tube gauge0.080 in