Detailed Evaluation & Buyer Recommendation
Harris Flotebote Grand Mariner 250 SEL 2011 vs Harris Flotebote Sunliner 180 2005 — Same Brand, Different Boat
The Harris Flotebote Grand Mariner 250 SEL 2011 vs Harris Flotebote Sunliner 180 2005 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 Harris Flotebote Grand Mariner 250 SEL 2011 measures 25,0 feet overall (2011), giving it roughly 7,0 additional feet of deck space compared to the Harris Flotebote Sunliner 180 2005 at 18,0 feet (2005). Weight tells a clearer story for trailering families: the Harris Flotebote Grand Mariner 250 SEL 2011 tips the scales at 3 537 lbs — 3 360 lbs more than the Harris Flotebote Sunliner 180 2005 at 177 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 425 hp, the Harris Flotebote Grand Mariner 250 SEL 2011 has a 402-hp advantage over the Harris Flotebote Sunliner 180 2005's 23-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Harris Flotebote Grand Mariner 250 SEL 2011 is rated for 16 passengers, while the Harris Flotebote Sunliner 180 2005 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Harris Flotebote Grand Mariner 250 SEL 2011 could be the deciding factor.
Bottom line: Choose the Harris Flotebote Grand Mariner 250 SEL 2011 if your priority is putting more people on the water — it handles 16 passengers and at 25,0 ft it has the deck room to back that rating up comfortably. The Harris Flotebote Sunliner 180 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.
General Boat Info
MakeHarris Flotebote
MakeHarris Flotebote
ModelGrand Mariner 250 SEL
ModelSunliner 18
Model Year2011
Model Year2005
Measurements / Dimensions
Beam8 ft. 6 in
Beam8 ft. 6 in
Beam - Meters2.59
Beam - Meters2.59
Beam - Inches102
Beam - Inches102
Bridge clearance - Detail62 in
Bridge clearance - Detailnot available
Bridge clearance - Meters1.57
Bridge clearance - Metersnot available
Bridge clearance - Inches62
Bridge clearance - Inchesnot available
Draft [drive up] - Detail13 in
Draft [drive up] - Detail13 in
Draft [drive up] meters0.33
Draft [drive up] meters0.33
Draft [drive up] inches13
Draft [drive up] inches13
Draft [max] - Detail30 in
Draft [max] - Detail22 in
Draft [max] - Meters0.76
Draft [max] - Meters0.56
Draft [max] - Inches3
Draft [max] - Inches22
Weight - Detail3,537 lbs
Weight - Detail1,770 lbs
Weight - kg1604.35
Weight - kg802.86
Weight - lbs.3537
Weight - lbs.177
Length - Feet25
Length - Feet18
Length overall - Detail27 ft. 4 in. Pontoon: 25 ft
Length overall - Detail18 ft. 0 in
Length overall - Meters8.33
Length overall - Meters5.49
Length overall - Inches328
Length overall - Inches216
Length [deck]not available
Length [deck]18 ft
Body / Hull
Hull materialAluminum
Hull materialnot available
Hull typePontoon
Hull typenot available
Pontoon and Inflatable Specific
Tube diameter25 in
Tube diameter23 in
Engine and Drivetrain
Fuel tank capacity - DetailPerformance III Package: 81 gal
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters306.62
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal81
Fuel tank capacity - Galnot available
Fuel typeGas
Fuel typenot available
Drive typeInboard
Drive typeOutboard
Engine max425 hp
Engine max23 in. Tubes: 75 hp 25 in. Tubes: 80 hp W/Performance-III Package: 105 hp
Operational Info
Maximum capacityPerformance III Package: 2,323 lbs
Maximum capacitynot available
Maximum peoplePerformance III Package: 16
Maximum people1