Detailed Evaluation & Buyer Recommendation
Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 21 Center Console 2008 — Same Brand, Different Boat
The Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 21 Center Console 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.
The Seaswirl 21 Center Console 2008 tops out at 250 hp. Engine specs for the Seaswirl 1851 Walk Around I/O 2006 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Seaswirl 21 Center Console 2008 carries 105 gallons versus 62 gallons in the Seaswirl 1851 Walk Around I/O 2006. 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 Seaswirl 21 Center Console 2008 is rated for 6 passengers, while the Seaswirl 1851 Walk Around I/O 2006 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Seaswirl 21 Center Console 2008 could be the deciding factor.
Bottom line: Choose the Seaswirl 21 Center Console 2008 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Seaswirl 1851 Walk Around I/O 2006 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
Model1851 Walk Around I/O
Model21 Center Console
Model Year2006
Model Year2008
Measurements / Dimensions
Beam90 in. (2.29 m)
Beam8 ft. 6 in
Beam - Meters2.29
Beam - Meters2.59
Beam - Inches9
Beam - Inches102
Deadrise20℃
Deadrise22℃
Length - Meters5.64
Length - Metersnot available
Length - Feet18
Length - Feet21
Length - Inches6
Length - Inchesnot available
Length overall - Detail18 ft. 6 in. (5.64 m)
Length overall - Detail21 ft. 0 in
Length overall - Meters5.64
Length overall - Meters6.4
Length overall - Inches222
Length overall - Inches252
Draft [max] - Detailnot available
Draft [max] - Detail16 in
Draft [max] - Metersnot available
Draft [max] - Meters0.41
Draft [max] - Inchesnot available
Draft [max] - Inches16
Weight - Detailnot available
Weight - Detail2,700 lbs. (w/o power)
Weight - kgnot available
Weight - kg1224.7
Weight - lbs.not available
Weight - lbs.27
Engine and Drivetrain
Fuel tank capacity - Detail62 gal. (235 l)
Fuel tank capacity - Detail105 gal
Fuel tank capacity - Liters234.7
Fuel tank capacity - Liters397.47
Fuel tank capacity - Gal62
Fuel tank capacity - Gal105
Fuel typeGas
Fuel typenot available
Drive typeI/O
Drive typeOutboard
Engine/s standardnot available
Engine/s standard150 hp
Engine maxnot available
Engine max250 hp
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeDeep Vee