Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 1851 Walk Around O/B 2006 - Boat Spec Comparison

Q: Which is the larger boat — the Seaswirl 1851 Walk Around I/O 2006 or the Seaswirl 1851 Walk Around O/B 2006?

The Seaswirl 1851 Walk Around O/B 2006 is the longer of the two at 18,0 feet overall. The Seaswirl 1851 Walk Around I/O 2006 comes in at 18,0 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: What is the maximum horsepower rating for these boats?

The Seaswirl 1851 Walk Around O/B 2006 has a documented max rating of 175 hp. Engine specifications for the Seaswirl 1851 Walk Around I/O 2006 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Seaswirl 1851 Walk Around I/O 2006 is Coast Guard rated for 5 passengers, while the Seaswirl 1851 Walk Around O/B 2006 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.

Q: Do these boats require an oversize trailer permit to tow on US highways?

Both the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006 share an 90 in. (2.29 m) beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.

Q: How do the fuel tanks compare on the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006?

Both boats carry similar fuel loads — 62 gallons and 62 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.

Q: Are the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006 from the same manufacturer?

Yes — both the Seaswirl 1851 Walk Around I/O 2006 and the Seaswirl 1851 Walk Around O/B 2006 are built by Seaswirl. 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.

Boat Comparison

Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 1851 Walk Around O/B 2006

Seaswirl

Seaswirl 1851 Walk Around I/O 2006

2006

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Seaswirl

Seaswirl 1851 Walk Around O/B 2006

2006

View full specs →

Detailed Evaluation & Buyer Recommendation

Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 1851 Walk Around O/B 2006 — Same Brand, Different Boat

The Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 1851 Walk Around O/B 2006 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 1851 Walk Around O/B 2006 tops out at 175 hp. Engine specs for the Seaswirl 1851 Walk Around I/O 2006 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 62 gal and 62 gal — so range won't be a tiebreaker here.

Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: The Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.

General Boat Info

MakeSeaswirl

Model1851 Walk Around I/O

Model1851 Walk Around O/B

Model Year2006

Measurements / Dimensions

Beam90 in. (2.29 m)

Beam - Meters2.29

Beam - Inches9

Deadrise20℃

Length - Meters5.64

Length - Feet18

Length - Inches6

Length overall - Detail18 ft. 6 in. (5.64 m)

Length overall - Meters5.64

Length overall - Inches222

Bridge clearance - Detailnot available

Bridge clearance - Detail67 in. (1.70 m)

Bridge clearance - Metersnot available

Bridge clearance - Meters1.7

Bridge clearance - Inchesnot available

Bridge clearance - Inches67

Draft [max] - Detailnot available

Draft [max] - Detail30 in. (.76 m)

Draft [max] - Metersnot available

Draft [max] - Meters0.76

Draft [max] - Inchesnot available

Draft [max] - Inches3

Weight - Detailnot available

Weight - Detailw/ standard engine: 2,750 lbs. (1,247 kg)

Weight - kgnot available

Weight - kg1247.38

Weight - lbs.not available

Weight - lbs.275

Engine and Drivetrain

Fuel tank capacity - Detail62 gal. (235 l)

Fuel tank capacity - Liters234.7

Fuel tank capacity - Gal62

Fuel typeGas

Drive typeI/O

Drive typeOutboard

Engine maxnot available

Engine max175 hp (130 kw) Standard: 115 hp (86 kw)

Operational Info

Maximum capacitynot available

Maximum capacity1,900 lbs. (862 kg)

Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 1851 Walk Around O/B 2006 — Common Questions

Which is the larger boat — the Seaswirl 1851 Walk Around I/O 2006 or the Seaswirl 1851 Walk Around O/B 2006?

The Seaswirl 1851 Walk Around O/B 2006 is the longer of the two at 18,0 feet overall. The Seaswirl 1851 Walk Around I/O 2006 comes in at 18,0 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

What is the maximum horsepower rating for these boats?

The Seaswirl 1851 Walk Around O/B 2006 has a documented max rating of 175 hp. Engine specifications for the Seaswirl 1851 Walk Around I/O 2006 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

How many people can each boat hold?

The Seaswirl 1851 Walk Around I/O 2006 is Coast Guard rated for 5 passengers, while the Seaswirl 1851 Walk Around O/B 2006 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.

Do these boats require an oversize trailer permit to tow on US highways?

Both the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006 share an 90 in. (2.29 m) beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.

How do the fuel tanks compare on the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006?

Both boats carry similar fuel loads — 62 gallons and 62 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.

Are the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 1851 Walk Around O/B 2006 from the same manufacturer?

Yes — both the Seaswirl 1851 Walk Around I/O 2006 and the Seaswirl 1851 Walk Around O/B 2006 are built by Seaswirl. 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.

← Seaswirl 1851 Walk Around I/O 2006 full specs ← Seaswirl 1851 Walk Around O/B 2006 full specs