Alumacraft Navigator 165 CS 2005 boat specs
Alumacraft
Alumacraft Navigator 165 CS 2005
2005
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Alumacraft VB 1756 AW Tunnel SC  2008 boat specs
Alumacraft
Alumacraft VB 1756 AW Tunnel SC 2008
2008
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Alumacraft Navigator 165 CS 2005 vs Alumacraft VB 1756 AW Tunnel SC 2008 — Same Brand, Different Boat

The Alumacraft Navigator 165 CS 2005 vs Alumacraft VB 1756 AW Tunnel SC 2008 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.

On paper these two are close siblings in the size department — Alumacraft Navigator 165 CS 2005 at 16,0 ft versus Alumacraft VB 1756 AW Tunnel SC 2008 at 17,0 ft. Weight tells a clearer story for trailering families: the Alumacraft Navigator 165 CS 2005 tips the scales at 965 lbs — 882 lbs more than the Alumacraft VB 1756 AW Tunnel SC 2008 at 83 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.

Both boats share a closely matched power ceiling — 90 hp for the Alumacraft Navigator 165 CS 2005 and 75 hp for the Alumacraft VB 1756 AW Tunnel SC 2008. 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. Fuel capacity breaks the other way: the Alumacraft Navigator 165 CS 2005 carries 23 gallons versus 16 gallons in the Alumacraft VB 1756 AW Tunnel SC 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft VB 1756 AW Tunnel SC 2008 comes in at 1 lbs per hp versus 11 lbs per hp for the Alumacraft Navigator 165 CS 2005. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.

Bottom line: The Alumacraft Navigator 165 CS 2005 and Alumacraft VB 1756 AW Tunnel SC 2008 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeAlumacraft
MakeAlumacraft
ModelNavigator 165 CS
ModelVB 1756 AW Tunnel SC
Model Year2005
Model Year2008
Measurements / Dimensions
Beam90 in. (2.29 m)
Beam83 in
Beam - Meters2.29
Beam - Meters2.11
Beam - Inches9
Beam - Inches83
Depth - Detail36 in. (.99 m) Maximum to floor: 21 in. (.53 m)
Depth - Detailnot available
Depth - Centimeters91.44
Depth - Centimetersnot available
Depth - Inches36
Depth - Inchesnot available
Weight - Detail965 lbs. (438 kg)
Weight - Detail830 lbs
Weight - kg437.72
Weight - kg376.48
Weight - lbs.965
Weight - lbs.83
Width [transom] - Detail90 in. (2.29 m)
Width [transom] - Detail56 in
Height [transom]20 in. (.51 m)
Height [transom]21 in
Length - Meters5.05
Length - Metersnot available
Length - Feet16
Length - Feet17
Length - Inches7
Length - Inchesnot available
Length overall - Detail16 ft. 7 in. (5.05 m)
Length overall - Detail17 ft
Length overall - Meters5.05
Length overall - Meters5.18
Length overall - Inches199
Length overall - Inches204
Height - Detailnot available
Height - Detail24 in
Height - Metersnot available
Height - Meters0.61
Height - Inchesnot available
Height - Inches24
Body / Hull
Hull thicknessBottom: .098 in. (2.4 mm) Sides: .80 in. (2.0 mm) 2XB Bow?2nd plate: .080 in
Hull thickness0.102 in
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typeFlat
Engine and Drivetrain
Fuel tank capacity - Detail23 gal. (87 l)
Fuel tank capacity - Detail16 gal
Fuel tank capacity - Liters87.06
Fuel tank capacity - Liters60.57
Fuel tank capacity - Gal23
Fuel tank capacity - Gal16
Engine max90 hp (67 kw)
Engine max75 hp
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum people5
Maximum people5
Maximum capacitynot available
Maximum capacity825 lbs

Alumacraft Navigator 165 CS 2005 vs Alumacraft VB 1756 AW Tunnel SC 2008 — Common Questions

Which is the larger boat — the Alumacraft Navigator 165 CS 2005 or the Alumacraft VB 1756 AW Tunnel SC 2008?
The Alumacraft VB 1756 AW Tunnel SC 2008 is the longer of the two at 17,0 feet overall. The Alumacraft Navigator 165 CS 2005 comes in at 16,0 feet, making it roughly 1,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Alumacraft Navigator 165 CS 2005 or the Alumacraft VB 1756 AW Tunnel SC 2008?
For trailering, the Alumacraft VB 1756 AW Tunnel SC 2008 has the edge at 83 lbs dry weight versus 965 lbs for the Alumacraft Navigator 165 CS 2005. 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 Alumacraft Navigator 165 CS 2005 is rated to a maximum of 90 hp, giving it the larger power ceiling. The Alumacraft VB 1756 AW Tunnel SC 2008 tops out at 75 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 Alumacraft Navigator 165 CS 2005 is Coast Guard rated for 5 passengers, while the Alumacraft VB 1756 AW Tunnel SC 2008 is certified for 5. 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 has the better power-to-weight ratio?
The Alumacraft VB 1756 AW Tunnel SC 2008 has a better power-to-weight ratio at 1 lbs per hp compared to 11 lbs per hp for the Alumacraft Navigator 165 CS 2005. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Which boat is wider, and does it affect trailering?
The Alumacraft VB 1756 AW Tunnel SC 2008 measures 83" wide, compared to 9" for the Alumacraft Navigator 165 CS 2005. 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.
Which boat has the larger fuel tank — the Alumacraft Navigator 165 CS 2005 or the Alumacraft VB 1756 AW Tunnel SC 2008?
The Alumacraft Navigator 165 CS 2005 has the bigger tank at 23 gallons, versus 16 gallons on the Alumacraft VB 1756 AW Tunnel SC 2008. That 7-gallon difference translates to roughly 21–35 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Alumacraft Navigator 165 CS 2005 and Alumacraft VB 1756 AW Tunnel SC 2008 from the same manufacturer?
Yes — both the Alumacraft Navigator 165 CS 2005 and the Alumacraft VB 1756 AW Tunnel SC 2008 are built by Alumacraft. 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.