Seaswirl 175 Fish-N-Ski O/B 2007 boat specs
Seaswirl
Seaswirl 175 Fish-N-Ski O/B 2007
2007
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Seaswirl 1851 Walk Around O/B 2006 boat specs
Seaswirl
Seaswirl 1851 Walk Around O/B 2006
2006
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Seaswirl 175 Fish-N-Ski O/B 2007 vs Seaswirl 1851 Walk Around O/B 2006 — Same Brand, Different Boat

The Seaswirl 175 Fish-N-Ski O/B 2007 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.

On paper these two are close siblings in the size department — Seaswirl 175 Fish-N-Ski O/B 2007 at 17,0 ft versus Seaswirl 1851 Walk Around O/B 2006 at 18,0 ft. At 205 lbs and 275 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.

The power gap is worth calling out. Rated to 175 hp, the Seaswirl 1851 Walk Around O/B 2006 has a 35-hp advantage over the Seaswirl 175 Fish-N-Ski O/B 2007's 140-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Seaswirl 1851 Walk Around O/B 2006 carries 62 gallons versus 23 gallons in the Seaswirl 175 Fish-N-Ski O/B 2007. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

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.

At this size, power-to-weight ratio matters more than outright horsepower. The Seaswirl 175 Fish-N-Ski O/B 2007 comes in at 2 lbs per hp versus 2 lbs per hp for the Seaswirl 1851 Walk Around O/B 2006. 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: Performance buyers should lean toward the Seaswirl 1851 Walk Around O/B 2006 and its 175-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Seaswirl 175 Fish-N-Ski O/B 2007 with its 140-hp rating is the more economical daily driver.
General Boat Info
MakeSeaswirl
MakeSeaswirl
Model175 Fish-N-Ski O/B
Model1851 Walk Around O/B
Model Year2007
Model Year2006
Measurements / Dimensions
Beam93 in
Beam90 in. (2.29 m)
Beam - Meters2.36
Beam - Meters2.29
Beam - Inches93
Beam - Inches9
Deadrise20℃
Deadrise20℃
Draft [max] - Detail30 in
Draft [max] - Detail30 in. (.76 m)
Draft [max] - Meters0.76
Draft [max] - Meters0.76
Draft [max] - Inches3
Draft [max] - Inches3
Weight - Detail2,050 lbs. w/ standard engine
Weight - Detailw/ standard engine: 2,750 lbs. (1,247 kg)
Weight - kg929.86
Weight - kg1247.38
Weight - lbs.205
Weight - lbs.275
Length - Feet17
Length - Feet18
Length - Inches4
Length - Inches6
Length overall - Detail17 ft. 4 in
Length overall - Detail18 ft. 6 in. (5.64 m)
Length overall - Meters5.28
Length overall - Meters5.64
Length overall - Inches208
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
Length - Metersnot available
Length - Meters5.64
Body / Hull
Hull materialFiberglass
Hull materialnot available
Engine and Drivetrain
Engine/s standardYamaha F115 TXR
Engine/s standardnot available
Fuel tank capacity - Detail23 gal
Fuel tank capacity - Detail62 gal. (235 l)
Fuel tank capacity - Liters87.06
Fuel tank capacity - Liters234.7
Fuel tank capacity - Gal23
Fuel tank capacity - Gal62
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeOutboard
Engine max140 hp Standard: 90 hp
Engine max175 hp (130 kw) Standard: 115 hp (86 kw)
Operational Info
Maximum capacity1,750 lbs
Maximum capacity1,900 lbs. (862 kg)

Seaswirl 175 Fish-N-Ski O/B 2007 vs Seaswirl 1851 Walk Around O/B 2006 — Common Questions

Which is the larger boat — the Seaswirl 175 Fish-N-Ski O/B 2007 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 175 Fish-N-Ski O/B 2007 comes in at 17,0 feet, making it roughly 1,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Seaswirl 175 Fish-N-Ski O/B 2007 or the Seaswirl 1851 Walk Around O/B 2006?
For trailering, the Seaswirl 175 Fish-N-Ski O/B 2007 has the edge at 205 lbs dry weight versus 275 lbs for the Seaswirl 1851 Walk Around O/B 2006. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Seaswirl 1851 Walk Around O/B 2006 is rated to a maximum of 175 hp, giving it the larger power ceiling. The Seaswirl 175 Fish-N-Ski O/B 2007 tops out at 140 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Seaswirl 175 Fish-N-Ski O/B 2007 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.
Which boat has the better power-to-weight ratio?
The Seaswirl 175 Fish-N-Ski O/B 2007 has a better power-to-weight ratio at 2 lbs per hp compared to 2 lbs per hp for the Seaswirl 1851 Walk Around O/B 2006. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Which boat is wider, and does it affect trailering?
The Seaswirl 175 Fish-N-Ski O/B 2007 measures 93" wide, compared to 9" for the Seaswirl 1851 Walk Around O/B 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 175 Fish-N-Ski O/B 2007 or the Seaswirl 1851 Walk Around O/B 2006?
The Seaswirl 1851 Walk Around O/B 2006 has the bigger tank at 62 gallons, versus 23 gallons on the Seaswirl 175 Fish-N-Ski O/B 2007. That 39-gallon difference translates to roughly 117–195 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Seaswirl 175 Fish-N-Ski O/B 2007 and Seaswirl 1851 Walk Around O/B 2006 from the same manufacturer?
Yes — both the Seaswirl 175 Fish-N-Ski O/B 2007 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.