Seaswirl 1851 Center Console O/B 2006 boat specs
Seaswirl
Seaswirl 1851 Center Console O/B 2006
2006
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Seaswirl 190 Fish-N-Ski I/O 2007 boat specs
Seaswirl
Seaswirl 190 Fish-N-Ski I/O 2007
2007
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Seaswirl 1851 Center Console O/B 2006 vs Seaswirl 190 Fish-N-Ski I/O 2007 — Same Brand, Different Boat

The Seaswirl 1851 Center Console O/B 2006 vs Seaswirl 190 Fish-N-Ski I/O 2007 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 1851 Center Console O/B 2006 at 18,0 ft versus Seaswirl 190 Fish-N-Ski I/O 2007 at 18,0 ft. Weight tells a clearer story for trailering families: the Seaswirl 1851 Center Console O/B 2006 tips the scales at 245 lbs — 218 lbs more than the Seaswirl 190 Fish-N-Ski I/O 2007 at 27 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 225 hp, the Seaswirl 190 Fish-N-Ski I/O 2007 has a 50-hp advantage over the Seaswirl 1851 Center Console O/B 2006's 175-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 Center Console O/B 2006 carries 62 gallons versus 29 gallons in the Seaswirl 190 Fish-N-Ski I/O 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 190 Fish-N-Ski I/O 2007 comes in at 0 lbs per hp versus 1 lbs per hp for the Seaswirl 1851 Center Console 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 190 Fish-N-Ski I/O 2007 and its 225-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Seaswirl 1851 Center Console O/B 2006 with its 175-hp rating is the more economical daily driver.
General Boat Info
MakeSeaswirl
MakeSeaswirl
Model1851 Center Console O/B
Model190 Fish-N-Ski I/O
Model Year2006
Model Year2007
Measurements / Dimensions
Beam90 in. (2.29 m)
Beam94 in
Beam - Meters2.29
Beam - Meters2.39
Beam - Inches9
Beam - Inches94
Bridge clearance - Detail70 in. (1.78 m)
Bridge clearance - Detailnot available
Bridge clearance - Meters1.78
Bridge clearance - Metersnot available
Bridge clearance - Inches7
Bridge clearance - Inchesnot available
Deadrise20℃
Deadrise21℃
Draft [drive up] - Detail14 in. (.35 m)
Draft [drive up] - Detailnot available
Draft [drive up] meters0.36
Draft [drive up] metersnot available
Draft [drive up] inches14
Draft [drive up] inchesnot available
Draft [max] - Detail30 in. (.76 m)
Draft [max] - Detail31 in
Draft [max] - Meters0.76
Draft [max] - Meters0.79
Draft [max] - Inches3
Draft [max] - Inches31
Weight - Detailw/ standard engine: 2,450 lbs. (1,111 kg)
Weight - Detail2,700 lbs. w/ standard engine
Weight - kg1111.3
Weight - kg1224.7
Weight - lbs.245
Weight - lbs.27
Length - Meters5.64
Length - Metersnot available
Length - Feet18
Length - Feet18
Length - Inches6
Length - Inches6
Length overall - Detail18 ft. 6 in. (5.64 m)
Length overall - Detail18 ft. 6 in
Length overall - Meters5.64
Length overall - Meters5.64
Length overall - Inches222
Length overall - Inches222
Engine and Drivetrain
Fuel tank capacity - Detail62 gal. (235 l)
Fuel tank capacity - Detail29 gal
Fuel tank capacity - Liters234.7
Fuel tank capacity - Liters109.78
Fuel tank capacity - Gal62
Fuel tank capacity - Gal29
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeI/O
Engine max175 hp (130 kw) Standard: 115 hp (86 kw)
Engine max225 hp Standard: 135 hp
Engine/s standardnot available
Engine/s standardVolvo 4.3 GL
Operational Info
Maximum capacity1,900 lbs. (862 kg)
Maximum capacity1,250 lbs
Body / Hull
Hull materialnot available
Hull materialFiberglass

Seaswirl 1851 Center Console O/B 2006 vs Seaswirl 190 Fish-N-Ski I/O 2007 — Common Questions

Which is the larger boat — the Seaswirl 1851 Center Console O/B 2006 or the Seaswirl 190 Fish-N-Ski I/O 2007?
The Seaswirl 190 Fish-N-Ski I/O 2007 is the longer of the two at 18,0 feet overall. The Seaswirl 1851 Center Console O/B 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.
Which is easier to trailer — the Seaswirl 1851 Center Console O/B 2006 or the Seaswirl 190 Fish-N-Ski I/O 2007?
For trailering, the Seaswirl 190 Fish-N-Ski I/O 2007 has the edge at 27 lbs dry weight versus 245 lbs for the Seaswirl 1851 Center Console 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 190 Fish-N-Ski I/O 2007 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Seaswirl 1851 Center Console O/B 2006 tops out at 175 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 1851 Center Console O/B 2006 is Coast Guard rated for 5 passengers, while the Seaswirl 190 Fish-N-Ski I/O 2007 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 190 Fish-N-Ski I/O 2007 has a better power-to-weight ratio at 0 lbs per hp compared to 1 lbs per hp for the Seaswirl 1851 Center Console 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 190 Fish-N-Ski I/O 2007 measures 94" wide, compared to 9" for the Seaswirl 1851 Center Console 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 1851 Center Console O/B 2006 or the Seaswirl 190 Fish-N-Ski I/O 2007?
The Seaswirl 1851 Center Console O/B 2006 has the bigger tank at 62 gallons, versus 29 gallons on the Seaswirl 190 Fish-N-Ski I/O 2007. That 33-gallon difference translates to roughly 99–165 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Seaswirl 1851 Center Console O/B 2006 and Seaswirl 190 Fish-N-Ski I/O 2007 from the same manufacturer?
Yes — both the Seaswirl 1851 Center Console O/B 2006 and the Seaswirl 190 Fish-N-Ski I/O 2007 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.