Alumacraft Navigator Classic 165 CS 2005 boat specs
Alumacraft
Alumacraft Navigator Classic 165 CS 2005
2005
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VS
Alumacraft Trophy 185 2007 boat specs
Alumacraft
Alumacraft Trophy 185 2007
2007
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Alumacraft Navigator Classic 165 CS 2005 vs Alumacraft Trophy 185 2007 — Same Brand, Different Boat

The Alumacraft Navigator Classic 165 CS 2005 vs Alumacraft Trophy 185 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.

On paper these two are close siblings in the size department — Alumacraft Navigator Classic 165 CS 2005 at 16,0 ft versus Alumacraft Trophy 185 2007 at 18,0 ft. At 88 lbs and 178 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 175 hp, the Alumacraft Trophy 185 2007 has a 100-hp advantage over the Alumacraft Navigator Classic 165 CS 2005's 75-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 Navigator Classic 165 CS 2005 carries 22 gallons versus 4 gallons in the Alumacraft Trophy 185 2007. 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 Trophy 185 2007 is rated for 8 passengers, while the Alumacraft Navigator Classic 165 CS 2005 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Trophy 185 2007 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft Trophy 185 2007 comes in at 1 lbs per hp versus 1 lbs per hp for the Alumacraft Navigator Classic 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: Choose the Alumacraft Trophy 185 2007 if your priority is putting more people on the water — it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Alumacraft Navigator Classic 165 CS 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
MakeAlumacraft
MakeAlumacraft
ModelNavigator Classic 165 CS
ModelTrophy 185
Model Year2005
Model Year2007
Measurements / Dimensions
Beam82 in. (2.08 m)
Beam98 in. (2.4 m)
Beam - Meters2.08
Beam - Meters2.49
Beam - Inches82
Beam - Inches98
Depth - Detail36 in. (.99 m) Maximum to floor: 21 in. (.53 m)
Depth - DetailMaximum: 47 in. (1.2 m) To Floor: 27 in. (0.67 m)
Depth - Centimeters91.44
Depth - Centimeters119.38
Depth - Inches36
Depth - Inches47
Weight - Detail880 lbs. (339 kg)
Weight - Detail1,780 lbs. (807 kg)
Weight - kg399.16
Weight - kg807.39
Weight - lbs.88
Weight - lbs.178
Width [transom] - Detail82 in. (2.08 m)
Width [transom] - Detail96 in. (2.42 m)
Height [transom]20 in. (.51 m)
Height [transom]25 in. (0.64 m)
Length - Meters5
Length - Meters5.6
Length - Feet16
Length - Feet18
Length - Inches5
Length - Inches8
Length overall - Detail16 ft. 5 in. (5.00 m)
Length overall - Detail18 ft. 8 in. (5.6 m)
Length overall - Meters5
Length overall - Meters5.69
Length overall - Inches197
Length overall - Inches224
Body / Hull
Hull thicknessBottom: .080 in. (2.0 mm) Sides: .067 in. (1.7 mm) 2XB Bow?2nd plate: .080 in
Hull thicknessBottom: 0.100 in. (2.5 mm)
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail22 gal. (83 l)
Fuel tank capacity - Detail40 gal. (151 l)
Fuel tank capacity - Liters83.28
Fuel tank capacity - Liters151.42
Fuel tank capacity - Gal22
Fuel tank capacity - Gal4
Engine max75 hp (56 kw)
Engine max175 hp (130 kW)
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum people5
Maximum people8
Maximum capacitynot available
Maximum capacity1,760 lbs. (798 kg)

Alumacraft Navigator Classic 165 CS 2005 vs Alumacraft Trophy 185 2007 — Common Questions

Which is the larger boat — the Alumacraft Navigator Classic 165 CS 2005 or the Alumacraft Trophy 185 2007?
The Alumacraft Trophy 185 2007 is the longer of the two at 18,0 feet overall. The Alumacraft Navigator Classic 165 CS 2005 comes in at 16,0 feet, making it roughly 2,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Alumacraft Navigator Classic 165 CS 2005 or the Alumacraft Trophy 185 2007?
For trailering, the Alumacraft Navigator Classic 165 CS 2005 has the edge at 88 lbs dry weight versus 178 lbs for the Alumacraft Trophy 185 2007. 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 Trophy 185 2007 is rated to a maximum of 175 hp, giving it the larger power ceiling. The Alumacraft Navigator Classic 165 CS 2005 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 Classic 165 CS 2005 is Coast Guard rated for 5 passengers, while the Alumacraft Trophy 185 2007 is certified for 8. 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 Trophy 185 2007 has a better power-to-weight ratio at 1 lbs per hp compared to 1 lbs per hp for the Alumacraft Navigator Classic 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 Trophy 185 2007 measures 98" wide, compared to 82" for the Alumacraft Navigator Classic 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 Classic 165 CS 2005 or the Alumacraft Trophy 185 2007?
The Alumacraft Navigator Classic 165 CS 2005 has the bigger tank at 22 gallons, versus 4 gallons on the Alumacraft Trophy 185 2007. That 18-gallon difference translates to roughly 54–90 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Alumacraft Navigator Classic 165 CS 2005 and Alumacraft Trophy 185 2007 from the same manufacturer?
Yes — both the Alumacraft Navigator Classic 165 CS 2005 and the Alumacraft Trophy 185 2007 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.