Detailed Evaluation & Buyer Recommendation
Alumacraft Navigator 185 Sport 2005 vs Alumacraft Pro 175 2007 — Same Brand, Different Boat
The Alumacraft Navigator 185 Sport 2005 vs Alumacraft Pro 175 2007 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.
The power gap is worth calling out. Rated to 150 hp, the Alumacraft Navigator 185 Sport 2005 has a 60-hp advantage over the Alumacraft Pro 175 2007's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Alumacraft Pro 175 2007 carries 16 gallons versus 4 gallons in the Alumacraft Navigator 185 Sport 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Alumacraft Navigator 185 Sport 2005 is rated for 6 passengers, while the Alumacraft Pro 175 2007 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Navigator 185 Sport 2005 could be the deciding factor.
Bottom line: Choose the Alumacraft Navigator 185 Sport 2005 if your priority is putting more people on the water — it handles 6 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Alumacraft Pro 175 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.
General Boat Info
MakeAlumacraft
MakeAlumacraft
ModelNavigator 185 Sport
ModelPro 175
Model Year2005
Model Year2007
Measurements / Dimensions
Beam96 in. (2.44 m)
Beam88 in. (2.23 m) Bottom: 56 in. (1.42 m)
Beam - Meters2.44
Beam - Meters2.24
Beam - Inches96
Beam - Inches88
Depth - Detail39 in. (.99 m) Maximum to floor: 22 in. (.56 m)
Depth - Detail23 in. (0.58 m)
Depth - Centimeters99.06
Depth - Centimeters58.42
Depth - Inches39
Depth - Inches23
Weight - Detail1440 lbs. (653 kg)
Weight - Detailnot available
Weight - kg653.17
Weight - kgnot available
Weight - lbs.144
Weight - lbs.not available
Width [transom] - Detail93 in. (2.36 m)
Width [transom] - Detail88 in. (2.2 m)
Height [transom]20 in. (.51 m)
Height [transom]22 in. (0.6 m)
Length - Meters5.66
Length - Meters5.31
Length - Feet18
Length - Feet17
Length - Inches7
Length - Inches5
Length overall - Detail18 ft. 7 in. (5.66 m)
Length overall - Detail17 ft. 5 in. (5.31 m)
Length overall - Meters5.66
Length overall - Meters5.31
Length overall - Inches223
Length overall - Inches209
Height - Detailnot available
Height - Detail22 in. (0.6 m)
Height - Metersnot available
Height - Meters0.56
Height - Inchesnot available
Height - Inches22
Body / Hull
Hull thicknessBottom: .098 in. (2.5 mm) Sides: .80 in. (2.0 mm) 2XB Bow?2nd plate: .098 in. 2XB Bottom?2nd plate: .080 in
Hull thickness0.102 in. (2.5 mm)
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail40 gal. (51 l)
Fuel tank capacity - Detail16 gal
Fuel tank capacity - Liters151.42
Fuel tank capacity - Liters60.57
Fuel tank capacity - Gal4
Fuel tank capacity - Gal16
Engine max150 hp (111 kw)
Engine max90 hp (67 kW)
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum people6
Maximum people4
Maximum capacitynot available
Maximum capacity1,200 lbs. (544 kg)