Grady-White Marlin 300 2007 boat specs
Grady-White
Grady-White Marlin 300 2007
2007
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Grady-White Marlin 300 2008 boat specs
Grady-White
Grady-White Marlin 300 2008
2008
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Grady-White Marlin 300 2007 vs Grady-White Marlin 300 2008: Same Brand, Different Boat

The Grady-White Marlin 300 2007 vs Grady-White Marlin 300 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 - Grady-White Marlin 300 2007 at 30,0 ft versus Grady-White Marlin 300 2008 at 30,0 ft. At 8 221 lbs and 8 221 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 700 hp, the Grady-White Marlin 300 2008 has a 100-hp advantage over the Grady-White Marlin 300 2007's 600-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Grady-White Marlin 300 2007 carries 306 gallons versus 300 gallons in the Grady-White Marlin 300 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 9 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.

Bottom line: Performance buyers should lean toward the Grady-White Marlin 300 2008 and its 700-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Grady-White Marlin 300 2007 with its 600-hp rating is the more economical daily driver.
General Boat Info
MakeGrady-White
MakeGrady-White
ModelMarlin 300
ModelMarlin 300
Model Year2007
Model Year2008
Measurements / Dimensions
Beam10 ft. 7 in.
Beam10 ft. 7 in.
Beam - Meters3.23
Beam - Meters3.23
Beam - Inches127
Beam - Inches127
Bridge clearance - Detail9 ft. 9 in. (with hardtop)
Bridge clearance - DetailHardtop: 9 ft. 9 in.
Bridge clearance - Meters2.97
Bridge clearance - Meters2.97
Bridge clearance - Inches117
Bridge clearance - Inches117
Deadrise19.5℃ with SeaV℃ hull (continuously variable vee)
Deadrisenot available
Draft [max] - Detail19 in.
Draft [max] - Detail23 in.
Draft [max] - Meters0.48
Draft [max] - Meters0.58
Draft [max] - Inches19
Draft [max] - Inches23
Weight - Detail8,221 lbs.
Weight - Detail8,221 lbs.
Weight - kg3728.98
Weight - kg3728.98
Weight - lbs.8221
Weight - lbs.8221
Width [transom] - Detail9 ft. 6 in.
Width [transom] - Detail9 ft. 6 in.
Length - Feet30
Length - Feet30
Length - Inches6
Length - Inches6
Length overall - Detail30 ft. 6 in. (with pulpit 32 ft. 7 in.)
Length overall - Detail30 ft. 6 in. Pulpit: 32 ft. 7 in.
Length overall - Meters9.93
Length overall - Meters9.93
Length overall - Inches391
Length overall - Inches391
Depth - Detailnot available
Depth - DetailCockpit: 29 in.
Depth - Centimetersnot available
Depth - Centimeters73.66
Depth - Inchesnot available
Depth - Inches29
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Engine and Drivetrain
Fuel tank capacity - Detail306 gal.
Fuel tank capacity - Detail300 gal.
Fuel tank capacity - Liters1158.34
Fuel tank capacity - Liters1135.62
Fuel tank capacity - Gal306
Fuel tank capacity - Gal300
Fuel typeGas
Fuel typeGas
Drive typeOutboard - Twin
Drive typeOutboard - Twin
Engine max600 hp
Engine max700 hp

Grady-White Marlin 300 2007 vs Grady-White Marlin 300 2008 - Common Questions

Which is the larger boat - the Grady-White Marlin 300 2007 or the Grady-White Marlin 300 2008?
The Grady-White Marlin 300 2008 is the longer of the two at 30,0 feet overall. The Grady-White Marlin 300 2007 comes in at 30,0 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 Grady-White Marlin 300 2007 or the Grady-White Marlin 300 2008?
For trailering, the Grady-White Marlin 300 2008 has the edge at 8 221 lbs dry weight versus 8 221 lbs for the Grady-White Marlin 300 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 Grady-White Marlin 300 2008 is rated to a maximum of 700 hp, giving it the larger power ceiling. The Grady-White Marlin 300 2007 tops out at 600 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 Grady-White Marlin 300 2007 is Coast Guard rated for 9 passengers, while the Grady-White Marlin 300 2008 is certified for 9. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Grady-White Marlin 300 2007 and Grady-White Marlin 300 2008 share an 10 ft. 7 in. beam - meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank - the Grady-White Marlin 300 2007 or the Grady-White Marlin 300 2008?
The Grady-White Marlin 300 2007 has the bigger tank at 306 gallons, versus 300 gallons on the Grady-White Marlin 300 2008. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Grady-White Marlin 300 2007 and Grady-White Marlin 300 2008 from the same manufacturer?
Yes - both the Grady-White Marlin 300 2007 and the Grady-White Marlin 300 2008 are built by Grady-White. 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.