Alumacraft Invader 185 2005 boat specs
Alumacraft
Alumacraft Invader 185 2005
2005
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VS
Alumacraft Lunker 165 CS 2012 boat specs
Alumacraft
Alumacraft Lunker 165 CS 2012
2012
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Alumacraft Invader 185 2005 vs Alumacraft Lunker 165 CS 2012 — Same Brand, Different Boat

The Alumacraft Invader 185 2005 vs Alumacraft Lunker 165 CS 2012 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 Invader 185 2005 at 18,0 ft versus Alumacraft Lunker 165 CS 2012 at 16,5 ft. At 13 lbs and 74 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 150 hp, the Alumacraft Invader 185 2005 has a 100-hp advantage over the Alumacraft Lunker 165 CS 2012's 50-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 Invader 185 2005 carries 35 gallons versus 8 gallons in the Alumacraft Lunker 165 CS 2012. 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 Lunker 165 CS 2012 is rated for 5 passengers, while the Alumacraft Invader 185 2005 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Lunker 165 CS 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft Invader 185 2005 comes in at 0 lbs per hp versus 2 lbs per hp for the Alumacraft Lunker 165 CS 2012. 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 Lunker 165 CS 2012 if your priority is putting more people on the water — it handles 5 passengers and at 16,5 ft it has the deck room to back that rating up comfortably. The Alumacraft Invader 185 2005 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
ModelInvader 185
ModelLunker 165 CS
Model Year2005
Model Year2012
Measurements / Dimensions
Beam92 in. (2.33 m) Bottom: 67 in. (1.70 m)
Beam76 in. (1.93 m)
Beam - Meters2.34
Beam - Meters1.93
Beam - Inches92
Beam - Inches76
Weight - Detail1,300 lbs. (590 kg)
Weight - Detail740 lbs. (336 kg)
Weight - kg589.67
Weight - kg335.66
Weight - lbs.13
Weight - lbs.74
Width [transom] - Detail92 in. (2.33 m)
Width [transom] - Detail73 in. (1.85 m)
Height - Detail23 in. (0.58 m)
Height - Detailnot available
Height - Meters0.58
Height - Metersnot available
Height - Inches23
Height - Inchesnot available
Height [transom]22 in. (0.6 m)
Height [transom]20 in. (0.51 m)
Length - Meters5.59
Length - Metersnot available
Length - Feet18
Length - Feet16.5
Length - Inches4
Length - Inchesnot available
Length overall - Detail18 ft. 4 in. (5.59 m)
Length overall - Detail16 ft. 6 in. (5 m)
Length overall - Meters5.59
Length overall - Meters5.03
Length overall - Inches22
Length overall - Inches198
Depth - Detailnot available
Depth - Detail35 in. (0.89 m) To Floor: 22 in. (0.56 m)
Depth - Centimetersnot available
Depth - Centimeters88.9
Depth - Inchesnot available
Depth - Inches35
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thicknessBottom/sides: .102 in. (2.5 mm)
Hull thicknessBottom: 0.080 in. (2 mm) Sides: 0.065 in. (1.65 mm)
Hull typenot available
Hull typeDeep Vee
Engine and Drivetrain
Fuel tank capacity - Detail35 gal. (132 l)
Fuel tank capacity - Detail8 gal. (30.3 l)
Fuel tank capacity - Liters132.49
Fuel tank capacity - Liters30.28
Fuel tank capacity - Gal35
Fuel tank capacity - Gal8
Engine max150 hp (111 kw)
Engine max50 hp (37 kW)
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum people4
Maximum people5
Storagenot available
StorageSide Livewell: 13 gal. (49 l)
Maximum capacitynot available
Maximum capacity1,235 lbs. (560 kg)

Alumacraft Invader 185 2005 vs Alumacraft Lunker 165 CS 2012 — Common Questions

Which is the larger boat — the Alumacraft Invader 185 2005 or the Alumacraft Lunker 165 CS 2012?
The Alumacraft Invader 185 2005 is the longer of the two at 18,0 feet overall. The Alumacraft Lunker 165 CS 2012 comes in at 16,5 feet, making it roughly 1,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Alumacraft Invader 185 2005 or the Alumacraft Lunker 165 CS 2012?
For trailering, the Alumacraft Invader 185 2005 has the edge at 13 lbs dry weight versus 74 lbs for the Alumacraft Lunker 165 CS 2012. 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 Invader 185 2005 is rated to a maximum of 150 hp, giving it the larger power ceiling. The Alumacraft Lunker 165 CS 2012 tops out at 50 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 Invader 185 2005 is Coast Guard rated for 4 passengers, while the Alumacraft Lunker 165 CS 2012 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 Invader 185 2005 has a better power-to-weight ratio at 0 lbs per hp compared to 2 lbs per hp for the Alumacraft Lunker 165 CS 2012. 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 Invader 185 2005 measures 92" wide, compared to 76" for the Alumacraft Lunker 165 CS 2012. 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 Invader 185 2005 or the Alumacraft Lunker 165 CS 2012?
The Alumacraft Invader 185 2005 has the bigger tank at 35 gallons, versus 8 gallons on the Alumacraft Lunker 165 CS 2012. That 27-gallon difference translates to roughly 81–135 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Alumacraft Invader 185 2005 and Alumacraft Lunker 165 CS 2012 from the same manufacturer?
Yes — both the Alumacraft Invader 185 2005 and the Alumacraft Lunker 165 CS 2012 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.