Detailed Evaluation & Buyer Recommendation
Sylvan 1700 Avenger DC 2005 vs Sylvan Expedition Sport 1800 DC 2011 — Same Brand, Different Boat
The Sylvan 1700 Avenger DC 2005 vs Sylvan Expedition Sport 1800 DC 2011 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.
Both boats share a closely matched power ceiling — 135 hp for the Sylvan 1700 Avenger DC 2005 and 150 hp for the Sylvan Expedition Sport 1800 DC 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 31 gal and 31 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Sylvan Expedition Sport 1800 DC 2011 is rated for 7 passengers, while the Sylvan 1700 Avenger DC 2005 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sylvan Expedition Sport 1800 DC 2011 could be the deciding factor.
Bottom line: Choose the Sylvan Expedition Sport 1800 DC 2011 if your priority is putting more people on the water — it handles 7 passengers and at 18,1 ft it has the deck room to back that rating up comfortably. The Sylvan 1700 Avenger DC 2005 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
Model1700 Avenger DC
ModelExpedition Sport 1800 DC
Model Year2005
Model Year2011
Measurements / Dimensions
Beam - Meters2.31
Beam - Meters2.44
Beam - Inches91
Beam - Inches96
Depth - Detail23 in
Depth - Detail25 in
Depth - Centimeters58.42
Depth - Centimeters63.5
Depth - Inches23
Depth - Inches25
Width [transom] - Detail90 in
Width [transom] - Detail90 in
Height - Detail31 in
Height - Detailnot available
Height - Meters0.79
Height - Metersnot available
Height - Inches31
Height - Inchesnot available
Height [transom]LS
Height [transom]not available
Length - Feet17
Length - Feet18.08
Length overall - Detail17 ft. 0 in
Length overall - Detail18 ft. 1 in
Length overall - Meters5.18
Length overall - Meters5.51
Length overall - Inches204
Length overall - Inches217
Weight - Detailnot available
Weight - Detail1,400 lbs
Weight - kgnot available
Weight - kg635.03
Weight - lbs.not available
Weight - lbs.14
Body / Hull
Hull thicknessBottom: 0.100 Side: 0.086 Rib: 0.1
Hull thicknessnot available
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail31 gal
Fuel tank capacity - Detail31 gal
Fuel tank capacity - Liters117.35
Fuel tank capacity - Liters117.35
Fuel tank capacity - Gal31
Fuel tank capacity - Gal31
Drive typeOutboard
Drive typenot available
Engine max135 hp
Engine max150 hp
Engine/s standardnot available
Engine/s standardMercury 115 EXLPT Optimax
Fuel typenot available
Fuel typeGas
Pontoon and Inflatable Specific
Tube gaugenot available
Tube gaugeBottom: 0.100 in. Side: 0.080 in. Rib: 0.100 in
Operational Info
Maximum capacitynot available
Maximum capacity1,625 lbs
Maximum peoplenot available
Maximum people7