Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 2101 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 2101 Walk Around O/B 2006?

The Seaswirl 2101 Walk Around O/B 2006 is the longer of the two at 21,0 feet overall. The Seaswirl 1851 Walk Around I/O 2006 comes in at 18,0 feet, making it roughly 3,0 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 2101 Walk Around O/B 2006 has a documented max rating of 225 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 2101 Walk Around O/B 2006 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.

Q: Which boat is wider, and does it affect trailering?

The Seaswirl 2101 Walk Around O/B 2006 measures 102" wide, compared to 90" for the Seaswirl 1851 Walk Around I/O 2006. 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.

Q: Which boat has the larger fuel tank - the Seaswirl 1851 Walk Around I/O 2006 or the Seaswirl 2101 Walk Around O/B 2006?

The Seaswirl 2101 Walk Around O/B 2006 has the bigger tank at 105 gallons, versus 62 gallons on the Seaswirl 1851 Walk Around I/O 2006. That 43-gallon difference translates to roughly 129–215 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 2101 Walk Around O/B 2006 from the same manufacturer?

Yes - both the Seaswirl 1851 Walk Around I/O 2006 and the Seaswirl 2101 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 2101 Walk Around O/B 2006

Seaswirl

Seaswirl 1851 Walk Around I/O 2006

2006

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Seaswirl

Seaswirl 2101 Walk Around O/B 2006

2006

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Detailed Evaluation & Buyer Recommendation

Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 2101 Walk Around O/B 2006: Same Brand, Different Boat

The Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 2101 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 2101 Walk Around O/B 2006 tops out at 225 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 2101 Walk Around O/B 2006 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 2101 Walk Around O/B 2006 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 2101 Walk Around O/B 2006 could be the deciding factor.

Bottom line: Choose the Seaswirl 2101 Walk Around O/B 2006 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

MakeSeaswirl

Model1851 Walk Around I/O

Model2101 Walk Around O/B

Model Year2006

Measurements / Dimensions

Beam90 in. (2.29 m)

Beam102 in. (2.59 m)

Beam - Meters2.29

Beam - Meters2.59

Beam - Inches90

Beam - Inches102

Deadrise20℃

Length - Meters5.64

Length - Meters6.55

Length - Feet18

Length - Feet21

Length - Inches6

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

Length overall - Detail21 ft. 6 in. (6.55 m)

Length overall - Meters5.64

Length overall - Meters6.55

Length overall - Inches222

Length overall - Inches258

Bridge clearance - Detailnot available

Bridge clearance - Detail77 in. (1.96 m)

Bridge clearance - Metersnot available

Bridge clearance - Meters1.96

Bridge clearance - Inchesnot available

Bridge clearance - Inches77

Draft [drive up] - Detailnot available

Draft [drive up] - Detail13 in. (.33 m)

Draft [drive up] metersnot available

Draft [drive up] meters0.33

Draft [drive up] inchesnot available

Draft [drive up] inches13

Draft [max] - Detailnot available

Draft [max] - Detail29 in. (.74 m)

Draft [max] - Metersnot available

Draft [max] - Meters0.74

Draft [max] - Inchesnot available

Draft [max] - Inches29

Weight - Detailnot available

Weight - Detailw/ standard engine: 3,455 lbs. (1,567 kg)

Weight - kgnot available

Weight - kg1567.16

Weight - lbs.not available

Weight - lbs.3455

Engine and Drivetrain

Fuel tank capacity - Detail62 gal. (235 l)

Fuel tank capacity - Detail105 gal. (397 l)

Fuel tank capacity - Liters234.7

Fuel tank capacity - Liters397.47

Fuel tank capacity - Gal62

Fuel tank capacity - Gal105

Fuel typeGas

Drive typeI/O

Drive typeOutboard

Engine maxnot available

Engine max225 hp (168 kw) Standard: 150 hp (112 kw)

Operational Info

Maximum capacitynot available

Maximum capacity1,675 lbs. (760 kg)

Seaswirl 1851 Walk Around I/O 2006 vs Seaswirl 2101 Walk Around O/B 2006 - Common Questions

Which is the larger boat - the Seaswirl 1851 Walk Around I/O 2006 or the Seaswirl 2101 Walk Around O/B 2006?

The Seaswirl 2101 Walk Around O/B 2006 is the longer of the two at 21,0 feet overall. The Seaswirl 1851 Walk Around I/O 2006 comes in at 18,0 feet, making it roughly 3,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

What is the maximum horsepower rating for these boats?

The Seaswirl 2101 Walk Around O/B 2006 has a documented max rating of 225 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 2101 Walk Around O/B 2006 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 is wider, and does it affect trailering?

The Seaswirl 2101 Walk Around O/B 2006 measures 102" wide, compared to 90" for the Seaswirl 1851 Walk Around I/O 2006. 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.

Which boat has the larger fuel tank - the Seaswirl 1851 Walk Around I/O 2006 or the Seaswirl 2101 Walk Around O/B 2006?

The Seaswirl 2101 Walk Around O/B 2006 has the bigger tank at 105 gallons, versus 62 gallons on the Seaswirl 1851 Walk Around I/O 2006. That 43-gallon difference translates to roughly 129–215 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Seaswirl 1851 Walk Around I/O 2006 and Seaswirl 2101 Walk Around O/B 2006 from the same manufacturer?

Yes - both the Seaswirl 1851 Walk Around I/O 2006 and the Seaswirl 2101 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 2101 Walk Around O/B 2006 full specs