Seaswirl 1851 Dual Console I/O 2007 boat specs
Seaswirl
Seaswirl 1851 Dual Console I/O 2007
2007
View full specs →
VS
Seaswirl 19 Bay Boat 2008 boat specs
Seaswirl
Seaswirl 19 Bay Boat 2008
2008
View full specs →

Seaswirl 1851 Dual Console I/O 2007 vs Seaswirl 19 Bay Boat 2008 — Same Brand, Different Boat

The Seaswirl 1851 Dual Console I/O 2007 vs Seaswirl 19 Bay Boat 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.

On paper these two are close siblings in the size department — Seaswirl 1851 Dual Console I/O 2007 at 18,0 ft versus Seaswirl 19 Bay Boat 2008 at 19,0 ft. Weight tells a clearer story for trailering families: the Seaswirl 1851 Dual Console I/O 2007 tips the scales at 305 lbs — 290 lbs more than the Seaswirl 19 Bay Boat 2008 at 15 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 1851 Dual Console I/O 2007 has a 75-hp advantage over the Seaswirl 19 Bay Boat 2008's 150-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 Dual Console I/O 2007 carries 62 gallons versus 54 gallons in the Seaswirl 19 Bay Boat 2008. 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.

Bottom line: Performance buyers should lean toward the Seaswirl 1851 Dual Console I/O 2007 and its 225-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Seaswirl 19 Bay Boat 2008 with its 150-hp rating is the more economical daily driver.
General Boat Info
MakeSeaswirl
MakeSeaswirl
Model1851 Dual Console I/O
Model19 Bay Boat
Model Year2007
Model Year2008
Measurements / Dimensions
Beam90 in
Beam8 ft. 6 in
Beam - Meters2.29
Beam - Meters2.59
Beam - Inches9
Beam - Inches102
Bridge clearance - Detail50 in
Bridge clearance - Detailnot available
Bridge clearance - Meters1.27
Bridge clearance - Metersnot available
Bridge clearance - Inches5
Bridge clearance - Inchesnot available
Deadrise20℃
Deadrise14℃
Draft [drive up] - Detail15 in
Draft [drive up] - Detailnot available
Draft [drive up] meters0.38
Draft [drive up] metersnot available
Draft [drive up] inches15
Draft [drive up] inchesnot available
Draft [max] - Detail31 in
Draft [max] - Detail10 in
Draft [max] - Meters0.79
Draft [max] - Meters0.25
Draft [max] - Inches31
Draft [max] - Inches1
Weight - Detail3,050 lbs. w/ standard engine
Weight - Detail1,500 lbs. (w/o power)
Weight - kg1383.46
Weight - kg680.39
Weight - lbs.305
Weight - lbs.15
Length - Feet18
Length - Feet19
Length - Inches6
Length - Inches6
Length overall - Detail18 ft. 6 in
Length overall - Detail19 ft. 6 in
Length overall - Meters5.64
Length overall - Meters5.94
Length overall - Inches222
Length overall - Inches234
Height [transom]not available
Height [transom]25 in
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Engine/s standardVolvo 3.0 GL - 135 hp
Engine/s standard115 hp
Fuel tank capacity - Detail62 gal
Fuel tank capacity - Detail54 gal
Fuel tank capacity - Liters234.7
Fuel tank capacity - Liters204.41
Fuel tank capacity - Gal62
Fuel tank capacity - Gal54
Fuel typeGas
Fuel typenot available
Drive typeI/O
Drive typeOutboard
Engine max225 hp Standard: 135 hp
Engine max150 hp
Operational Info
Maximum capacity1,400 lbs
Maximum capacitynot available

Seaswirl 1851 Dual Console I/O 2007 vs Seaswirl 19 Bay Boat 2008 — Common Questions

Which is the larger boat — the Seaswirl 1851 Dual Console I/O 2007 or the Seaswirl 19 Bay Boat 2008?
The Seaswirl 19 Bay Boat 2008 is the longer of the two at 19,0 feet overall. The Seaswirl 1851 Dual Console I/O 2007 comes in at 18,0 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 1851 Dual Console I/O 2007 or the Seaswirl 19 Bay Boat 2008?
For trailering, the Seaswirl 19 Bay Boat 2008 has the edge at 15 lbs dry weight versus 305 lbs for the Seaswirl 1851 Dual Console I/O 2007. 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 Dual Console I/O 2007 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Seaswirl 19 Bay Boat 2008 tops out at 150 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 Dual Console I/O 2007 is Coast Guard rated for 5 passengers, while the Seaswirl 19 Bay Boat 2008 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 is wider, and does it affect trailering?
The Seaswirl 19 Bay Boat 2008 measures 102" wide, compared to 9" for the Seaswirl 1851 Dual Console I/O 2007. 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 Dual Console I/O 2007 or the Seaswirl 19 Bay Boat 2008?
The Seaswirl 1851 Dual Console I/O 2007 has the bigger tank at 62 gallons, versus 54 gallons on the Seaswirl 19 Bay Boat 2008. That 8-gallon difference translates to roughly 24–40 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Seaswirl 1851 Dual Console I/O 2007 and Seaswirl 19 Bay Boat 2008 from the same manufacturer?
Yes — both the Seaswirl 1851 Dual Console I/O 2007 and the Seaswirl 19 Bay Boat 2008 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.