Grady-White Bimini 306 2007 boat specs
Grady-White
Grady-White Bimini 306 2007
2007
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VS
Grady-White Sportsman 180 2007 boat specs
Grady-White
Grady-White Sportsman 180 2007
2007
View full specs →

Grady-White Bimini 306 2007 vs Grady-White Sportsman 180 2007 — Same Brand, Different Boat

The Grady-White Bimini 306 2007 vs Grady-White Sportsman 180 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.

Size is the most obvious dividing line here. The Grady-White Sportsman 180 2007 measures 17,0 feet overall (2007), giving it roughly 14,0 additional feet of deck space compared to the Grady-White Bimini 306 2007 at 3,0 feet (2007). At 65 lbs and 18 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 600 hp, the Grady-White Bimini 306 2007 has a 450-hp advantage over the Grady-White Sportsman 180 2007's 150-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 Bimini 306 2007 carries 306 gallons versus 6 gallons in the Grady-White Sportsman 180 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 Grady-White Bimini 306 2007 is rated for 9 passengers, while the Grady-White Sportsman 180 2007 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Grady-White Bimini 306 2007 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Grady-White Sportsman 180 2007 comes in at 0 lbs per hp versus 0 lbs per hp for the Grady-White Bimini 306 2007. 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 Grady-White Bimini 306 2007 if your priority is putting more people on the water — it handles 9 passengers and at 3,0 ft it has the deck room to back that rating up comfortably. The Grady-White Sportsman 180 2007 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
MakeGrady-White
MakeGrady-White
ModelBimini 306
ModelSportsman 18
Model Year2007
Model Year2007
Measurements / Dimensions
Beam10 ft. 7 in
Beam7 ft. 5 in
Beam - Meters3.23
Beam - Meters2.26
Beam - Inches127
Beam - Inches89
Bridge clearance - Detail7 ft. 3 in. (with T-top 9 ft. 4 in.)
Bridge clearance - Detail5 ft. 7 in
Bridge clearance - Meters2.84
Bridge clearance - Meters1.7
Bridge clearance - Inches112
Bridge clearance - Inches67
Deadrise19.5℃ with SeaV℃ hull (continuously variable vee)
Deadrise19℃ with SeaV℃ hull (continuously variable vee)
Draft [max] - Detail19 in
Draft [max] - Detail14 in
Draft [max] - Meters0.48
Draft [max] - Meters0.36
Draft [max] - Inches19
Draft [max] - Inches14
Weight - Detail6,500 lbs
Weight - Detail1,800 lbs
Weight - kg2948.35
Weight - kg816.47
Weight - lbs.65
Weight - lbs.18
Width [transom] - Detail9 ft. 6 in
Width [transom] - Detail7 ft. 2 in
Length - Feet3
Length - Feet17
Length - Inches6
Length - Inches1
Length overall - Detail30 ft. 6 in
Length overall - Detail17 ft. 10 in
Length overall - Meters9.3
Length overall - Meters5.44
Length overall - Inches366
Length overall - Inches214
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Engine and Drivetrain
Fuel tank capacity - Detail306 gal
Fuel tank capacity - Detail60 gal
Fuel tank capacity - Liters1158.34
Fuel tank capacity - Liters227.12
Fuel tank capacity - Gal306
Fuel tank capacity - Gal6
Fuel typeGas
Fuel typeGas
Drive typeOutboard - Twin
Drive typeOutboard
Engine max600 hp
Engine max150 hp

Grady-White Bimini 306 2007 vs Grady-White Sportsman 180 2007 — Common Questions

Which is the larger boat — the Grady-White Bimini 306 2007 or the Grady-White Sportsman 180 2007?
The Grady-White Sportsman 180 2007 is the longer of the two at 17,0 feet overall. The Grady-White Bimini 306 2007 comes in at 3,0 feet, making it roughly 14,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Grady-White Bimini 306 2007 or the Grady-White Sportsman 180 2007?
For trailering, the Grady-White Sportsman 180 2007 has the edge at 18 lbs dry weight versus 65 lbs for the Grady-White Bimini 306 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 Bimini 306 2007 is rated to a maximum of 600 hp, giving it the larger power ceiling. The Grady-White Sportsman 180 2007 tops out at 150 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 Bimini 306 2007 is Coast Guard rated for 9 passengers, while the Grady-White Sportsman 180 2007 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 Grady-White Sportsman 180 2007 has a better power-to-weight ratio at 0 lbs per hp compared to 0 lbs per hp for the Grady-White Bimini 306 2007. 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 Grady-White Bimini 306 2007 measures 127" wide, compared to 89" for the Grady-White Sportsman 180 2007. 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 Grady-White Bimini 306 2007 or the Grady-White Sportsman 180 2007?
The Grady-White Bimini 306 2007 has the bigger tank at 306 gallons, versus 6 gallons on the Grady-White Sportsman 180 2007. That 300-gallon difference translates to roughly 900–1500 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Grady-White Bimini 306 2007 and Grady-White Sportsman 180 2007 from the same manufacturer?
Yes — both the Grady-White Bimini 306 2007 and the Grady-White Sportsman 180 2007 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.