Maxum 1800 SR3 2009 boat specs
Maxum
Maxum 1800 SR3 2009
2009
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VS
Maxum 1800MX Sport Boat 2006 boat specs
Maxum
Maxum 1800MX Sport Boat 2006
2006
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Maxum 1800 SR3 2009 vs Maxum 1800MX Sport Boat 2006 — Same Brand, Different Boat

The Maxum 1800 SR3 2009 vs Maxum 1800MX Sport Boat 2006 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 — Maxum 1800 SR3 2009 at 18,0 ft versus Maxum 1800MX Sport Boat 2006 at 17,0 ft. Weight tells a clearer story for trailering families: the Maxum 1800MX Sport Boat 2006 tips the scales at 1 991 lbs — 1 966 lbs less than the Maxum 1800 SR3 2009 at 25 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 220 hp, the Maxum 1800 SR3 2009 has a 85-hp advantage over the Maxum 1800MX Sport Boat 2006's 135-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Maxum 1800 SR3 2009 carries 28 gallons versus 21 gallons in the Maxum 1800MX Sport Boat 2006. 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 Maxum 1800 SR3 2009 comes in at 0 lbs per hp versus 15 lbs per hp for the Maxum 1800MX Sport Boat 2006. 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: Performance buyers should lean toward the Maxum 1800 SR3 2009 and its 220-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Maxum 1800MX Sport Boat 2006 with its 135-hp rating is the more economical daily driver.
General Boat Info
MakeMaxum
MakeMaxum
Model1800 SR3
Model1800MX Sport Boat
Model Year2009
Model Year2006
Measurements / Dimensions
Beam7 ft. 7 in. (2.31 m)
Beam7 ft. 0 in. (2.13 m)
Beam - Meters2.31
Beam - Meters2.13
Beam - Inches91
Beam - Inches84
Bridge clearance - Detail4 ft. 3 in. (1.3 m) Max: 6 ft. 7 in. (2 m)
Bridge clearance - Detail5 ft. 8 in. (1.73 m)
Bridge clearance - Meters2.01
Bridge clearance - Meters1.73
Bridge clearance - Inches79
Bridge clearance - Inches68
Deadrise19℃
Deadrise19℃
Draft [drive up] - Detail1 ft. 8 in. (0.51 m)
Draft [drive up] - Detail1 ft. 6 in. (.46 m)
Draft [drive up] meters0.51
Draft [drive up] meters0.46
Draft [drive up] inches2
Draft [drive up] inches18
Draft [max] - Detail3 ft. 1 in. (0.94 m)
Draft [max] - Detail2 ft. 11 in. (.89 m)
Draft [max] - Meters0.94
Draft [max] - Meters0.89
Draft [max] - Inches37
Draft [max] - Inches35
Weight - DetailWith Standard Engine: 2,500 lbs. (1,134 kg)
Weight - Detail1,991 lbs. (903.1 kg) with standard engine
Weight - kg1133.98
Weight - kg903.1
Weight - lbs.25
Weight - lbs.1991
Length - Meters5.49
Length - Meters5.36
Length - Feet18
Length - Feet17
Length [over all with swim platform]20 ft. 1 in. (6.12 m)
Length [over all with swim platform]not available
Length overall - Detail18 ft. 0 in. (5.49 m)
Length overall - Detail17 ft. 7 in. (5.36 m)
Length overall - Meters5.49
Length overall - Meters5.36
Length overall - Inches216
Length overall - Inches211
Length - Inchesnot available
Length - Inches7
Body / Hull
Hull materialFiberglass
Hull materialnot available
Hull typeModified Vee
Hull typenot available
Engine and Drivetrain
Engine make3.0L Alpha I with power steering
Engine makenot available
Fuel tank capacity - Detail28 gal. (106 l)
Fuel tank capacity - Detail21 gal. (79.5 l)
Fuel tank capacity - Liters105.99
Fuel tank capacity - Liters79.49
Fuel tank capacity - Gal28
Fuel tank capacity - Gal21
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typeInboard
Horsepower135 hp
Horsepowernot available
Engine max220 hp
Engine max135 hp
Engine/s standardnot available
Engine/s standard3.0 l Alpha I, 135 hp
Trailer Info
Trailer - DetailColor-matched painted single-axle with disc brakes and swing-away tongue
Trailer - Detailnot available
Trailer - Length over allRigged: 23 ft. 3 in. (7.09 m)
Trailer - Length over all22 ft. 6 in. (6.86 m)
Trailer - WeightWith Standard Engine: 3,160 lbs. (1,433 kg)
Trailer - Weight2,516 lbs. (1,141 kg) with standard engine
Trailer - Width8 ft. 1 in. (2.46 m)
Trailer - Width7 ft. 9 in. (2.36 m)

Maxum 1800 SR3 2009 vs Maxum 1800MX Sport Boat 2006 — Common Questions

Which is the larger boat — the Maxum 1800 SR3 2009 or the Maxum 1800MX Sport Boat 2006?
The Maxum 1800 SR3 2009 is the longer of the two at 18,0 feet overall. The Maxum 1800MX Sport Boat 2006 comes in at 17,0 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 Maxum 1800 SR3 2009 or the Maxum 1800MX Sport Boat 2006?
For trailering, the Maxum 1800 SR3 2009 has the edge at 25 lbs dry weight versus 1 991 lbs for the Maxum 1800MX Sport Boat 2006. 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 Maxum 1800 SR3 2009 is rated to a maximum of 220 hp, giving it the larger power ceiling. The Maxum 1800MX Sport Boat 2006 tops out at 135 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 Maxum 1800 SR3 2009 is Coast Guard rated for 5 passengers, while the Maxum 1800MX Sport Boat 2006 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 Maxum 1800 SR3 2009 has a better power-to-weight ratio at 0 lbs per hp compared to 15 lbs per hp for the Maxum 1800MX Sport Boat 2006. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
What do the trailers weigh for the Maxum 1800 SR3 2009 and Maxum 1800MX Sport Boat 2006?
The trailer for the Maxum 1800 SR3 2009 is listed at With Standard Engine: 3,160 lbs. (1,433 kg) and the Maxum 1800MX Sport Boat 2006 trailer at 2,516 lbs. (1,141 kg) with standard engine. Always add trailer weight to the boat's dry weight when checking your tow vehicle's gross trailer weight rating.
Which boat is wider, and does it affect trailering?
The Maxum 1800 SR3 2009 measures 91" wide, compared to 84" for the Maxum 1800MX Sport Boat 2006. 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 Maxum 1800 SR3 2009 or the Maxum 1800MX Sport Boat 2006?
The Maxum 1800 SR3 2009 has the bigger tank at 28 gallons, versus 21 gallons on the Maxum 1800MX Sport Boat 2006. 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 Maxum 1800 SR3 2009 and Maxum 1800MX Sport Boat 2006 from the same manufacturer?
Yes — both the Maxum 1800 SR3 2009 and the Maxum 1800MX Sport Boat 2006 are built by Maxum. 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.