Larson 186 Senza 2010 vs Larson SEi 190 I/O SF 2004 - Boat Spec Comparison

Q: Which is easier to trailer — the Larson 186 Senza 2010 or the Larson SEi 190 I/O SF 2004?

For trailering, the Larson 186 Senza 2010 has the edge at 27 lbs dry weight versus 265 lbs for the Larson SEi 190 I/O SF 2004. 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.

Q: Which boat can handle a bigger outboard?

The Larson SEi 190 I/O SF 2004 is rated to a maximum of 300 hp, giving it the larger power ceiling. The Larson 186 Senza 2010 tops out at 270 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.

Q: How many people can each boat hold?

The Larson 186 Senza 2010 is Coast Guard rated for 9 passengers, while the Larson SEi 190 I/O SF 2004 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 Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004 share an 7 ft. 10 in. (2.39 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 Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004?

Both boats carry similar fuel loads — 29 gallons and 29 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 Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004 from the same manufacturer?

Yes — both the Larson 186 Senza 2010 and the Larson SEi 190 I/O SF 2004 are built by Larson. 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

Larson 186 Senza 2010 vs Larson SEi 190 I/O SF 2004

Larson

Larson 186 Senza 2010

2010

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Larson

Larson SEi 190 I/O SF 2004

2004

View full specs →

Detailed Evaluation & Buyer Recommendation

Larson 186 Senza 2010 vs Larson SEi 190 I/O SF 2004 — Same Brand, Different Boat

The Larson 186 Senza 2010 vs Larson SEi 190 I/O SF 2004 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 power gap is worth calling out. Rated to 300 hp, the Larson SEi 190 I/O SF 2004 has a 30-hp advantage over the Larson 186 Senza 2010's 270-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 29 gal and 29 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Larson 186 Senza 2010 is rated for 9 passengers, while the Larson SEi 190 I/O SF 2004 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson 186 Senza 2010 could be the deciding factor.

Bottom line: Choose the Larson 186 Senza 2010 if your priority is putting more people on the water — it handles 9 passengers and at 18,5 ft it has the deck room to back that rating up comfortably. The Larson SEi 190 I/O SF 2004 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

MakeLarson

Model186 Senza

ModelSEi 190 I/O SF

Model Year201

Model Year2004

Measurements / Dimensions

Beam7 ft. 10 in. (2.39 m)

Beam7 ft. 10 in

Beam - Meters2.39

Beam - Inches94

Deadrise21°

Draft [max] - Detail33 in. (83.8 cm)

Draft [max] - Detail31 in

Draft [max] - Meters0.84

Draft [max] - Meters0.79

Draft [max] - Inches33

Draft [max] - Inches31

Weight - Detail2,700 lbs. (1,225 kg)

Weight - Detail2,650 lbs. apx

Weight - kg1224.7

Weight - kg1202.02

Weight - lbs.27

Weight - lbs.265

Length - Feet18.5

Length - Feetnot available

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

Length overall - Detail18 ft. 6 in

Length overall - Meters5.64

Length overall - Inches222

Body / Hull

Hull materialFiberglass

Hull typeModified Vee

Hull typenot available

Engine and Drivetrain

Fuel tank capacity - Detail29 gal. (109.8 l)

Fuel tank capacity - Detail29 gal

Fuel tank capacity - Liters109.78

Fuel tank capacity - Gal29

Fuel typeGas

Fuel typenot available

Drive typeI/O

Drive typenot available

Engine max270 hp

Engine max300 HP

Operational Info

Maximum capacity1,400 lbs. (635 kg)

Maximum capacity1,500 lbs

Maximum people9

Maximum peoplenot available

Trailer Info

Trailer - Length over all25 ft. 1 in. (7.64 m)

Trailer - Length over allnot available

Larson 186 Senza 2010 vs Larson SEi 190 I/O SF 2004 — Common Questions

Which is easier to trailer — the Larson 186 Senza 2010 or the Larson SEi 190 I/O SF 2004?

For trailering, the Larson 186 Senza 2010 has the edge at 27 lbs dry weight versus 265 lbs for the Larson SEi 190 I/O SF 2004. 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 Larson SEi 190 I/O SF 2004 is rated to a maximum of 300 hp, giving it the larger power ceiling. The Larson 186 Senza 2010 tops out at 270 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 Larson 186 Senza 2010 is Coast Guard rated for 9 passengers, while the Larson SEi 190 I/O SF 2004 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 Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004 share an 7 ft. 10 in. (2.39 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 Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004?

Both boats carry similar fuel loads — 29 gallons and 29 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.

Are the Larson 186 Senza 2010 and Larson SEi 190 I/O SF 2004 from the same manufacturer?

Yes — both the Larson 186 Senza 2010 and the Larson SEi 190 I/O SF 2004 are built by Larson. 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.

← Larson 186 Senza 2010 full specs ← Larson SEi 190 I/O SF 2004 full specs