Larson SEi 180 Fish Series O/B 2005 vs Larson SEi 180 Fish Series O/B 2006 - Boat Spec Comparison

Q: Which is easier to trailer — the Larson SEi 180 Fish Series O/B 2005 or the Larson SEi 180 Fish Series O/B 2006?

For trailering, the Larson SEi 180 Fish Series O/B 2006 has the edge at 17 lbs dry weight versus 1 785 lbs for the Larson SEi 180 Fish Series O/B 2005. 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: What is the maximum horsepower rating for these boats?

The Larson SEi 180 Fish Series O/B 2005 has a documented max rating of 175 hp. Engine specifications for the Larson SEi 180 Fish Series O/B 2006 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Larson SEi 180 Fish Series O/B 2005 is Coast Guard rated for 8 passengers, while the Larson SEi 180 Fish Series O/B 2006 is certified for 6. 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 SEi 180 Fish Series O/B 2005 and Larson SEi 180 Fish Series O/B 2006 share an 7 ft. 9 in 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: Which boat has the larger fuel tank — the Larson SEi 180 Fish Series O/B 2005 or the Larson SEi 180 Fish Series O/B 2006?

The Larson SEi 180 Fish Series O/B 2005 has the bigger tank at 29 gallons, versus 23 gallons on the Larson SEi 180 Fish Series O/B 2006. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Larson SEi 180 Fish Series O/B 2005 and Larson SEi 180 Fish Series O/B 2006 from the same manufacturer?

Yes — both the Larson SEi 180 Fish Series O/B 2005 and the Larson SEi 180 Fish Series O/B 2006 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 SEi 180 Fish Series O/B 2005 vs Larson SEi 180 Fish Series O/B 2006

Larson

Larson SEi 180 Fish Series O/B 2005

2005

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Larson

Larson SEi 180 Fish Series O/B 2006

2006

View full specs →

Detailed Evaluation & Buyer Recommendation

Larson SEi 180 Fish Series O/B 2005 vs Larson SEi 180 Fish Series O/B 2006 — Same Brand, Different Boat

The Larson SEi 180 Fish Series O/B 2005 vs Larson SEi 180 Fish Series 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.

The Larson SEi 180 Fish Series O/B 2005 carries a rated maximum of 175 hp. Engine data for the Larson SEi 180 Fish Series O/B 2006 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Larson SEi 180 Fish Series O/B 2005 carries 29 gallons versus 23 gallons in the Larson SEi 180 Fish Series O/B 2006. 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 SEi 180 Fish Series O/B 2005 is rated for 8 passengers, while the Larson SEi 180 Fish Series O/B 2006 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson SEi 180 Fish Series O/B 2005 could be the deciding factor.

Bottom line: Choose the Larson SEi 180 Fish Series O/B 2005 if your priority is putting more people on the water — it handles 8 passengers and at 0,0 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 Fish Series O/B 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.

General Boat Info

MakeLarson

ModelSEi 180 Fish Series O/B

Model Year2005

Model Year2006

Measurements / Dimensions

Beam7 ft. 9 in

Beam7 ft. 9 in. (2.36 m)

Beam - Meters2.36

Beam - Inches93

Deadrise21℃

Draft [max] - Detail33 in. max

Draft [max] - Detail30 in. (76.2 cm)

Draft [max] - Meters0.84

Draft [max] - Meters0.76

Draft [max] - Inches33

Draft [max] - Inches3

Weight - Detail1,785 lbs. apx

Weight - Detail1,700 lbs. (771 kg)

Weight - kg809.66

Weight - kg771.11

Weight - lbs.1785

Weight - lbs.17

Height [transom]20 in

Height [transom]not available

Length overall - Detail18 ft. 6 in

Length overall - Detail17 ft. 6 in. (5.33 m)

Length overall - Meters5.64

Length overall - Meters5.33

Length overall - Inches222

Length overall - Inches21

Length - Metersnot available

Length - Meters5.33

Length - Feetnot available

Length - Feet17

Length - Inchesnot available

Length - Inches6

Body / Hull

Hull materialFiberglass

Hull materialnot available

Hull typenot available

Hull typeModified Vee

Engine and Drivetrain

Fuel tank capacity - Detail29 gal

Fuel tank capacity - Detail23 gal. (87 l)

Fuel tank capacity - Liters109.78

Fuel tank capacity - Liters87.06

Fuel tank capacity - Gal29

Fuel tank capacity - Gal23

Engine max175 HP

Engine maxnot available

Drive typenot available

Drive typeOutboard

Operational Info

Maximum capacity1,880 lbs

Maximum capacity1,700 lbs. (771 kg)

Maximum people8 Persons

Maximum people6

Trailer Info

Trailer - Detailnot available

Trailer - DetailSingle-axle EZ loader

Larson SEi 180 Fish Series O/B 2005 vs Larson SEi 180 Fish Series O/B 2006 — Common Questions

Which is easier to trailer — the Larson SEi 180 Fish Series O/B 2005 or the Larson SEi 180 Fish Series O/B 2006?

For trailering, the Larson SEi 180 Fish Series O/B 2006 has the edge at 17 lbs dry weight versus 1 785 lbs for the Larson SEi 180 Fish Series O/B 2005. 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.

What is the maximum horsepower rating for these boats?

The Larson SEi 180 Fish Series O/B 2005 has a documented max rating of 175 hp. Engine specifications for the Larson SEi 180 Fish Series O/B 2006 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

How many people can each boat hold?

The Larson SEi 180 Fish Series O/B 2005 is Coast Guard rated for 8 passengers, while the Larson SEi 180 Fish Series O/B 2006 is certified for 6. 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 SEi 180 Fish Series O/B 2005 and Larson SEi 180 Fish Series O/B 2006 share an 7 ft. 9 in 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.

Which boat has the larger fuel tank — the Larson SEi 180 Fish Series O/B 2005 or the Larson SEi 180 Fish Series O/B 2006?

The Larson SEi 180 Fish Series O/B 2005 has the bigger tank at 29 gallons, versus 23 gallons on the Larson SEi 180 Fish Series O/B 2006. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Larson SEi 180 Fish Series O/B 2005 and Larson SEi 180 Fish Series O/B 2006 from the same manufacturer?

Yes — both the Larson SEi 180 Fish Series O/B 2005 and the Larson SEi 180 Fish Series O/B 2006 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 SEi 180 Fish Series O/B 2005 full specs ← Larson SEi 180 Fish Series O/B 2006 full specs