Larson LX 185 S I/O 2013 vs Larson SEi 180 Ski Fish I/O 2007 - Boat Spec Comparison

Q: Which is the larger boat — the Larson LX 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

The Larson LX 185 S I/O 2013 is the longer of the two at 18,7 feet overall. The Larson SEi 180 Ski Fish I/O 2007 comes in at 17,0 feet, making it roughly 1,7 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which is easier to trailer — the Larson LX 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

For trailering, the Larson LX 185 S I/O 2013 has the edge at 204 lbs dry weight versus 265 lbs for the Larson SEi 180 Ski Fish 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.

Q: Which boat can handle a bigger outboard?

The Larson SEi 180 Ski Fish I/O 2007 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Larson LX 185 S I/O 2013 tops out at 135 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 LX 185 S I/O 2013 is Coast Guard rated for 7 passengers, while the Larson SEi 180 Ski Fish I/O 2007 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: Which boat is wider, and does it affect trailering?

The Larson SEi 180 Ski Fish I/O 2007 measures 93" wide, compared to 88" for the Larson LX 185 S I/O 2013. 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.

Q: Which boat has the larger fuel tank — the Larson LX 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

The Larson SEi 180 Ski Fish I/O 2007 has the bigger tank at 23 gallons, versus 19 gallons on the Larson LX 185 S I/O 2013. That 4-gallon difference translates to roughly 12–20 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Larson LX 185 S I/O 2013 and Larson SEi 180 Ski Fish I/O 2007 from the same manufacturer?

Yes — both the Larson LX 185 S I/O 2013 and the Larson SEi 180 Ski Fish I/O 2007 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 LX 185 S I/O 2013 vs Larson SEi 180 Ski Fish I/O 2007

Larson

Larson LX 185 S I/O 2013

2013

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Larson

Larson SEi 180 Ski Fish I/O 2007

2007

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Detailed Evaluation & Buyer Recommendation

Larson LX 185 S I/O 2013 vs Larson SEi 180 Ski Fish I/O 2007 — Same Brand, Different Boat

Matching a deep vee Larson LX 185 S I/O 2013 against a modified vee Larson SEi 180 Ski Fish I/O 2007 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department — Larson LX 185 S I/O 2013 at 18,7 ft versus Larson SEi 180 Ski Fish I/O 2007 at 17,0 ft. At 204 lbs and 265 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 power gap is worth calling out. Rated to 225 hp, the Larson SEi 180 Ski Fish I/O 2007 has a 90-hp advantage over the Larson LX 185 S I/O 2013's 135-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 SEi 180 Ski Fish I/O 2007 carries 23 gallons versus 19 gallons in the Larson LX 185 S I/O 2013. 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 LX 185 S I/O 2013 is rated for 7 passengers, while the Larson SEi 180 Ski Fish I/O 2007 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson LX 185 S I/O 2013 could be the deciding factor.

Bottom line: Choose the Larson LX 185 S I/O 2013 if your priority is putting more people on the water — it handles 7 passengers and at 18,7 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 Ski Fish I/O 2007 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

ModelLX 185 S I/O

ModelSEi 180 Ski Fish I/O

Model Year2013

Model Year2007

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] - Detail31 in. (78.7 cm)

Draft [max] - Meters0.79

Draft [max] - Inches31

Weight - Detail2,040 lbs. (925 kg) with base engine (3.0L)

Weight - Detail2,650 lbs. (1,202 kg)

Weight - kg925.33

Weight - kg1202.02

Weight - lbs.204

Weight - lbs.265

Length - Feet18.67

Length - Feet17

Length overall - Detail18 ft. 8 in. (5.96 m)

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

Length overall - Meters5.69

Length overall - Meters5.33

Length overall - Inches224

Length overall - Inches21

Length - Metersnot available

Length - Meters5.33

Length - Inchesnot available

Length - Inches6

Body / Hull

Hull materialComposite

Hull materialFiberglass

Hull typeDeep Vee

Hull typeModified Vee

Engine and Drivetrain

Engine makeMerCruiser Catalyst Compliant (mandatory in U.S.)

Engine makenot available

Engine model3.0 MPI EC

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

Drive typeI/O

Horsepower135

Horsepowernot available

Engine maxnot available

Engine max225 hp

Operational Info

Maximum capacity1,100 lbs. (499 kg)

Maximum people7

Maximum people6

Trailer Info

Trailer - DetailLX 3000 DB with swing tongue & chrome wheels

Trailer - Detailnot available

Trailer - Length over all21 ft. 4 in. (6.5 m)

Trailer - Length over allnot available

Larson LX 185 S I/O 2013 vs Larson SEi 180 Ski Fish I/O 2007 — Common Questions

Which is the larger boat — the Larson LX 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

The Larson LX 185 S I/O 2013 is the longer of the two at 18,7 feet overall. The Larson SEi 180 Ski Fish I/O 2007 comes in at 17,0 feet, making it roughly 1,7 ft shorter — a meaningful difference in deck room and overall on-water presence.

Which is easier to trailer — the Larson LX 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

For trailering, the Larson LX 185 S I/O 2013 has the edge at 204 lbs dry weight versus 265 lbs for the Larson SEi 180 Ski Fish 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 Larson SEi 180 Ski Fish I/O 2007 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Larson LX 185 S I/O 2013 tops out at 135 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 LX 185 S I/O 2013 is Coast Guard rated for 7 passengers, while the Larson SEi 180 Ski Fish I/O 2007 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 Ski Fish I/O 2007 measures 93" wide, compared to 88" for the Larson LX 185 S I/O 2013. 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 185 S I/O 2013 or the Larson SEi 180 Ski Fish I/O 2007?

The Larson SEi 180 Ski Fish I/O 2007 has the bigger tank at 23 gallons, versus 19 gallons on the Larson LX 185 S I/O 2013. 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 185 S I/O 2013 and Larson SEi 180 Ski Fish I/O 2007 from the same manufacturer?

Yes — both the Larson LX 185 S I/O 2013 and the Larson SEi 180 Ski Fish I/O 2007 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 LX 185 S I/O 2013 full specs ← Larson SEi 180 Ski Fish I/O 2007 full specs