Larson LX 620 O/B 2012 boat specs
Larson
Larson LX 620 O/B 2012
2012
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VS
Larson SEi 180 Fish Series O/B 2006 boat specs
Larson
Larson SEi 180 Fish Series O/B 2006
2006
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Larson LX 620 O/B 2012 vs Larson SEi 180 Fish Series O/B 2006 — A Close Look at Two Modified Vees

When two boats share the same hull type — in this case both the Larson LX 620 O/B 2012 and the Larson SEi 180 Fish Series O/B 2006 are modified vee designs with composite construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Larson LX 620 O/B 2012 at 16,2 ft versus Larson SEi 180 Fish Series O/B 2006 at 17,0 ft. At 115 lbs and 17 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The Larson LX 620 O/B 2012 carries a rated maximum of 90 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 2006 carries 23 gallons versus 19 gallons in the Larson LX 620 O/B 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 6 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: The Larson LX 620 O/B 2012 and Larson SEi 180 Fish Series O/B 2006 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeLarson
MakeLarson
ModelLX 620 O/B
ModelSEi 180 Fish Series O/B
Model Year2012
Model Year2006
Measurements / Dimensions
Beam7 ft. 4 in. (2.24 m)
Beam7 ft. 9 in. (2.36 m)
Beam - Meters2.24
Beam - Meters2.36
Beam - Inches88
Beam - Inches93
Deadrise21°
Deadrise21℃
Draft [max] - Detail31 in. (79 cm)
Draft [max] - Detail30 in. (76.2 cm)
Draft [max] - Meters0.79
Draft [max] - Meters0.76
Draft [max] - Inches31
Draft [max] - Inches3
Weight - Detail1,150 lbs. (522 kg)
Weight - Detail1,700 lbs. (771 kg)
Weight - kg521.63
Weight - kg771.11
Weight - lbs.115
Weight - lbs.17
Length - Feet16.17
Length - Feet17
Length overall - Detail16 ft. 2 in. (4.93 m)
Length overall - Detail17 ft. 6 in. (5.33 m)
Length overall - Meters4.93
Length overall - Meters5.33
Length overall - Inches194
Length overall - Inches21
Length - Metersnot available
Length - Meters5.33
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialComposite
Hull materialnot available
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Engine makeMercury
Engine makenot available
Engine model60ELPT EFI 4S
Engine modelnot available
Fuel tank capacity - Detail19 gal. (72 l)
Fuel tank capacity - Detail23 gal. (87 l)
Fuel tank capacity - Liters71.92
Fuel tank capacity - Liters87.06
Fuel tank capacity - Gal19
Fuel tank capacity - Gal23
Fuel typeGas
Fuel typenot available
Drive typeOutboard
Drive typeOutboard
Engine max90 hp
Engine maxnot available
Operational Info
Maximum capacity1,400 lbs. (635 kg)
Maximum capacity1,700 lbs. (771 kg)
Maximum people6 / 850 lbs
Maximum people6
Trailer Info
Trailer - DetailLX 2200 with swing tongue
Trailer - DetailSingle-axle EZ loader
Trailer - Length over all21 ft. 4 in. (6.5 m)
Trailer - Length over allnot available

Larson LX 620 O/B 2012 vs Larson SEi 180 Fish Series O/B 2006 — Common Questions

Which is the larger boat — the Larson LX 620 O/B 2012 or the Larson SEi 180 Fish Series O/B 2006?
The Larson SEi 180 Fish Series O/B 2006 is the longer of the two at 17,0 feet overall. The Larson LX 620 O/B 2012 comes in at 16,2 feet, making it roughly 0,8 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Larson LX 620 O/B 2012 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 115 lbs for the Larson LX 620 O/B 2012. 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 LX 620 O/B 2012 has a documented max rating of 90 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 LX 620 O/B 2012 is Coast Guard rated for 6 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.
Which boat is wider, and does it affect trailering?
The Larson SEi 180 Fish Series O/B 2006 measures 93" wide, compared to 88" for the Larson LX 620 O/B 2012. 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 LX 620 O/B 2012 or the Larson SEi 180 Fish Series O/B 2006?
The Larson SEi 180 Fish Series O/B 2006 has the bigger tank at 23 gallons, versus 19 gallons on the Larson LX 620 O/B 2012. That 4-gallon difference translates to roughly 12–20 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Larson LX 620 O/B 2012 and Larson SEi 180 Fish Series O/B 2006 from the same manufacturer?
Yes — both the Larson LX 620 O/B 2012 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.