Detailed Evaluation & Buyer Recommendation
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
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
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)