Bayliner 180 OB 2011 boat specs
Bayliner
Bayliner 180 OB 2011
2011
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VS
Bayliner GT 2009 boat specs
Bayliner
Bayliner GT 2009
2009
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Bayliner 180 OB 2011 vs Bayliner GT 2009 — Same Brand, Different Boat

Matching a deep vee Bayliner 180 OB 2011 against a modified vee Bayliner GT 2009 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 — Bayliner 180 OB 2011 at 18,0 ft versus Bayliner GT 2009 at 17,5 ft. At 1 878 lbs and 1 847 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.

Both boats share a closely matched power ceiling — 125 hp for the Bayliner 180 OB 2011 and 135 hp for the Bayliner GT 2009. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads — 23 gal and 21 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Bayliner 180 OB 2011 is rated for 7 passengers, while the Bayliner GT 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Bayliner 180 OB 2011 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Bayliner GT 2009 comes in at 14 lbs per hp versus 15 lbs per hp for the Bayliner 180 OB 2011. 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 Bayliner 180 OB 2011 if your priority is putting more people on the water — it handles 7 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Bayliner GT 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.
General Boat Info
MakeBayliner
MakeBayliner
Model180 OB
ModelGT
Model Year2011
Model Year2009
Measurements / Dimensions
Beam7 ft. 6 in. (2.29 m)
Beam6 ft. 11 in. (2.11 m)
Beam - Meters2.29
Beam - Meters2.11
Beam - Inches9
Beam - Inches83
Bridge clearance - Detail3 ft. 10 in. (1.17 m)
Bridge clearance - Detail3 ft. 8 in. (1.12 m)
Bridge clearance - Meters1.17
Bridge clearance - Meters1.12
Bridge clearance - Inches46
Bridge clearance - Inches44
Deadrise17°
Deadrise19℃
Draft [drive up] - Detail1 ft. 2 in. (0.36 m)
Draft [drive up] - Detail1 ft. 6 in. (0.46 m)
Draft [drive up] meters0.36
Draft [drive up] meters0.46
Draft [drive up] inches14
Draft [drive up] inches18
Draft [max] - Detail2 ft. 7 in. (0.79 m)
Draft [max] - Detail2 ft. 10 in. (0.86 m)
Draft [max] - Meters0.79
Draft [max] - Meters0.86
Draft [max] - Inches31
Draft [max] - Inches34
Weight - Detail1,878 lbs. (852 kg)
Weight - Detail1,847 lbs. (838 kg)
Weight - kg851.85
Weight - kg837.78
Weight - lbs.1878
Weight - lbs.1847
Height - Detail6 ft. 0 in. (1.83 m) rigged
Height - Detailnot available
Height - Meters1.83
Height - Metersnot available
Height - Inches72
Height - Inchesnot available
Length - Feet18
Length - Feet17.5
Length overall - Detail18 ft. 0 in. (5.49 m)
Length overall - Detail17 ft. 6 in. (5.33 m) Rigged: 18 ft. 6 in. (5.64 m)
Length overall - Meters5.49
Length overall - Meters5.64
Length overall - Inches216
Length overall - Inches222
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeDeep Vee
Hull typeModified Vee
Engine and Drivetrain
Max no of engines1
Max no of enginesnot available
Engine makeMercury
Engine makeMercury
Engine model90 Optimax DFI
Engine model3.0L MerCruiser® Alpha I
Engine/s standard90 hp
Engine/s standardnot available
Fuel tank capacity - Detail23 gal. (87 l)
Fuel tank capacity - Detail21 gal. (79.5 l)
Fuel tank capacity - Liters87.06
Fuel tank capacity - Liters79.49
Fuel tank capacity - Gal23
Fuel tank capacity - Gal21
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeI/O
Engine max125 hp
Engine maxnot available
Horsepowernot available
Horsepower135 hp
Operational Info
Maximum people7
Maximum people6
Trailer Info
Trailer - Length over all20 ft. 9 in. (6.32 m)
Trailer - Length over allStorage Length: 20 ft. 10 in. (6.35 m) Rigged: 21 ft. 11 in. (6.68 m)
Trailer - Weight2,315 lbs. (1,050.1 kg)
Trailer - Weight2,319 lbs. (1,052 kg)
Trailer - Heightnot available
Trailer - Height5 ft. 9 in. (1.75 m)
Trailer - Widthnot available
Trailer - Width7 ft. 9 in. (2.36 m)

Bayliner 180 OB 2011 vs Bayliner GT 2009 — Common Questions

Which is the larger boat — the Bayliner 180 OB 2011 or the Bayliner GT 2009?
The Bayliner 180 OB 2011 is the longer of the two at 18,0 feet overall. The Bayliner GT 2009 comes in at 17,5 feet, making it roughly 0,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Bayliner 180 OB 2011 or the Bayliner GT 2009?
For trailering, the Bayliner GT 2009 has the edge at 1 847 lbs dry weight versus 1 878 lbs for the Bayliner 180 OB 2011. 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 Bayliner GT 2009 is rated to a maximum of 135 hp, giving it the larger power ceiling. The Bayliner 180 OB 2011 tops out at 125 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 Bayliner 180 OB 2011 is Coast Guard rated for 7 passengers, while the Bayliner GT 2009 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 Bayliner GT 2009 has a better power-to-weight ratio at 14 lbs per hp compared to 15 lbs per hp for the Bayliner 180 OB 2011. 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 Bayliner 180 OB 2011 and Bayliner GT 2009?
The trailer for the Bayliner 180 OB 2011 is listed at 2,315 lbs. (1,050.1 kg) and the Bayliner GT 2009 trailer at 2,319 lbs. (1,052 kg). 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 Bayliner GT 2009 measures 83" wide, compared to 9" for the Bayliner 180 OB 2011. 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.
How do the fuel tanks compare on the Bayliner 180 OB 2011 and Bayliner GT 2009?
Both boats carry similar fuel loads — 23 gallons and 21 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Bayliner 180 OB 2011 and Bayliner GT 2009 from the same manufacturer?
Yes — both the Bayliner 180 OB 2011 and the Bayliner GT 2009 are built by Bayliner. 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.