Alumaweld Flat Bottom 20 Foot 2009 boat specs
Alumaweld
Alumaweld Flat Bottom 20 Foot 2009
2009
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Alumaweld Intruder Inboard 20 2008 boat specs
Alumaweld
Alumaweld Intruder Inboard 20 2008
2008
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Alumaweld Flat Bottom 20 Foot 2009 vs Alumaweld Intruder Inboard 20 2008 — Same Brand, Different Boat

Matching a flat Alumaweld Flat Bottom 20 Foot 2009 against a modified vee Alumaweld Intruder Inboard 20 2008 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department — Alumaweld Flat Bottom 20 Foot 2009 at 2,0 ft versus Alumaweld Intruder Inboard 20 2008 at 2,0 ft. Weight tells a clearer story for trailering families: the Alumaweld Intruder Inboard 20 2008 tips the scales at 226 lbs — 212 lbs less than the Alumaweld Flat Bottom 20 Foot 2009 at 14 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.

The power gap is worth calling out. Rated to 330 hp, the Alumaweld Intruder Inboard 20 2008 has a 215-hp advantage over the Alumaweld Flat Bottom 20 Foot 2009's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 3 gal and 6 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Alumaweld Intruder Inboard 20 2008 is rated for 6 passengers, while the Alumaweld Flat Bottom 20 Foot 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumaweld Intruder Inboard 20 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumaweld Flat Bottom 20 Foot 2009 comes in at 0 lbs per hp versus 1 lbs per hp for the Alumaweld Intruder Inboard 20 2008. 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 Alumaweld Intruder Inboard 20 2008 if your priority is putting more people on the water — it handles 6 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Alumaweld Flat Bottom 20 Foot 2009 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
MakeAlumaweld
MakeAlumaweld
ModelFlat Bottom 20 Foot
ModelIntruder Inboard 2
Model Year2009
Model Year2008
Measurements / Dimensions
Beam94.5 in. At Chine: 67 in
Beam98 in. At Chine: 82 in
Beam - Meters2.41
Beam - Meters2.49
Beam - Inches94.5
Beam - Inches98
Depth - Detail21 in
Depth - Detail25 in
Depth - Centimeters53.34
Depth - Centimeters63.5
Depth - Inches21
Depth - Inches25
Weight - Detail1,400 lbs
Weight - Detail2,260 lbs
Weight - kg635.03
Weight - kg1025.12
Weight - lbs.14
Weight - lbs.226
Height - DetailSide: 28 in
Height - DetailSide: 33 in
Height - Meters0.71
Height - Meters0.84
Height - Inches28
Height - Inches33
Height [transom]25 in
Height [transom]not available
Length - Feet2
Length - Feet2
Length overall - Detail20 ft. 0 in
Length overall - Detail20 ft. 1 in
Length overall - Meters6.1
Length overall - Meters6.12
Length overall - Inches24
Length overall - Inches241
Deadrisenot available
Deadrise14℃
Length - Inchesnot available
Length - Inches1
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thicknessBottom: 0.160 in. Side: 0.125 in
Hull thicknessBottom: 0.190 in. Side: 0.125 in
Hull typeFlat
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail30 gal
Fuel tank capacity - Detail60 gal
Fuel tank capacity - Liters113.56
Fuel tank capacity - Liters227.12
Fuel tank capacity - Gal3
Fuel tank capacity - Gal6
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeJet Drive
Engine maxProp: 115 hp Jet (Remote): 80 hp
Engine max330 hp
Operational Info
Maximum capacity1,700 lbs
Maximum capacity1,700 lbs
Maximum people5 at 750 lbs
Maximum people6 @ 900 lbs

Alumaweld Flat Bottom 20 Foot 2009 vs Alumaweld Intruder Inboard 20 2008 — Common Questions

Which is the larger boat — the Alumaweld Flat Bottom 20 Foot 2009 or the Alumaweld Intruder Inboard 20 2008?
The Alumaweld Intruder Inboard 20 2008 is the longer of the two at 2,0 feet overall. The Alumaweld Flat Bottom 20 Foot 2009 comes in at 2,0 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Alumaweld Flat Bottom 20 Foot 2009 or the Alumaweld Intruder Inboard 20 2008?
For trailering, the Alumaweld Flat Bottom 20 Foot 2009 has the edge at 14 lbs dry weight versus 226 lbs for the Alumaweld Intruder Inboard 20 2008. 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 Alumaweld Intruder Inboard 20 2008 is rated to a maximum of 330 hp, giving it the larger power ceiling. The Alumaweld Flat Bottom 20 Foot 2009 tops out at 115 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 Alumaweld Flat Bottom 20 Foot 2009 is Coast Guard rated for 5 passengers, while the Alumaweld Intruder Inboard 20 2008 is certified for 6. 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 Alumaweld Flat Bottom 20 Foot 2009 has a better power-to-weight ratio at 0 lbs per hp compared to 1 lbs per hp for the Alumaweld Intruder Inboard 20 2008. 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 Alumaweld Intruder Inboard 20 2008 measures 98" wide, compared to 95" for the Alumaweld Flat Bottom 20 Foot 2009. 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 Alumaweld Flat Bottom 20 Foot 2009 or the Alumaweld Intruder Inboard 20 2008?
The Alumaweld Intruder Inboard 20 2008 has the bigger tank at 6 gallons, versus 3 gallons on the Alumaweld Flat Bottom 20 Foot 2009. That 3-gallon difference translates to roughly 9–15 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Alumaweld Flat Bottom 20 Foot 2009 and Alumaweld Intruder Inboard 20 2008 from the same manufacturer?
Yes — both the Alumaweld Flat Bottom 20 Foot 2009 and the Alumaweld Intruder Inboard 20 2008 are built by Alumaweld. 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.