Larson SEi 180 O/B 2004 boat specs
Larson
Larson SEi 180 O/B 2004
2004
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VS
Larson Senza 226 I/O 2011 boat specs
Larson
Larson Senza 226 I/O 2011
2011
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Larson SEi 180 O/B 2004 vs Larson Senza 226 I/O 2011 — Same Brand, Different Boat

The Larson SEi 180 O/B 2004 vs Larson Senza 226 I/O 2011 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 Senza 226 I/O 2011 has a 150-hp advantage over the Larson SEi 180 O/B 2004'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 Larson Senza 226 I/O 2011 carries 56 gallons versus 23 gallons in the Larson SEi 180 O/B 2004. 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 Larson Senza 226 I/O 2011 is rated for 11 passengers, while the Larson SEi 180 O/B 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 Senza 226 I/O 2011 could be the deciding factor.

Bottom line: Choose the Larson Senza 226 I/O 2011 if your priority is putting more people on the water — it handles 11 passengers and at 22,3 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 O/B 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
MakeLarson
ModelSEi 180 O/B
ModelSenza 226 I/O
Model Year2004
Model Year2011
Measurements / Dimensions
Beam7 ft. 9 in
Beam8 ft. 6 in. (2.59 m)
Beam - Meters2.36
Beam - Meters2.59
Beam - Inches93
Beam - Inches102
Deadrise21℃
Deadrise21°
Draft [max] - Detail30 in. max
Draft [max] - Detail36 in. (91.4 cm)
Draft [max] - Meters0.76
Draft [max] - Meters0.91
Draft [max] - Inches3
Draft [max] - Inches36
Weight - Detail1,500 lbs. apx
Weight - Detail3,850 lbs. (1,746 kg) with base engine
Weight - kg680.39
Weight - kg1746.33
Weight - lbs.15
Weight - lbs.385
Height [transom]20 in
Height [transom]not available
Length overall - Detail17 ft. 6 in
Length overall - Detail22 ft. 3 in. (6.78 m)
Length overall - Meters5.33
Length overall - Meters6.78
Length overall - Inches21
Length overall - Inches267
Length - Feetnot available
Length - Feet22.25
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail23 gal
Fuel tank capacity - Detail56 gal. (212 l)
Fuel tank capacity - Liters87.06
Fuel tank capacity - Liters211.98
Fuel tank capacity - Gal23
Fuel tank capacity - Gal56
Engine max150 HP
Engine max300 hp
Engine/s standardnot available
Engine/s standardMerCruiser 5.0L
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeI/O
Horsepowernot available
Horsepower260 hp
Operational Info
Maximum capacity1,475 lbs
Maximum capacity1,800 lbs. (816 kg)
Maximum peoplenot available
Maximum people11
Trailer Info
Trailer - Detailnot available
Trailer - DetailSZA 5500 DB with swing tongue
Trailer - Length over allnot available
Trailer - Length over all28 ft. 1 in. (8.56 m)

Larson SEi 180 O/B 2004 vs Larson Senza 226 I/O 2011 — Common Questions

Which is easier to trailer — the Larson SEi 180 O/B 2004 or the Larson Senza 226 I/O 2011?
For trailering, the Larson SEi 180 O/B 2004 has the edge at 15 lbs dry weight versus 385 lbs for the Larson Senza 226 I/O 2011. 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 Senza 226 I/O 2011 is rated to a maximum of 300 hp, giving it the larger power ceiling. The Larson SEi 180 O/B 2004 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 Larson SEi 180 O/B 2004 is Coast Guard rated for 5 passengers, while the Larson Senza 226 I/O 2011 is certified for 11. 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 Larson Senza 226 I/O 2011 measures 102" wide, compared to 93" for the Larson SEi 180 O/B 2004. 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 Larson SEi 180 O/B 2004 or the Larson Senza 226 I/O 2011?
The Larson Senza 226 I/O 2011 has the bigger tank at 56 gallons, versus 23 gallons on the Larson SEi 180 O/B 2004. 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 Larson SEi 180 O/B 2004 and Larson Senza 226 I/O 2011 from the same manufacturer?
Yes — both the Larson SEi 180 O/B 2004 and the Larson Senza 226 I/O 2011 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.