Larson Cabrio 310 2004 vs Larson SEi 180 Fish Series I/O 2005 - Boat Spec Comparison

Q: Which is easier to trailer — the Larson Cabrio 310 2004 or the Larson SEi 180 Fish Series I/O 2005?

For trailering, the Larson Cabrio 310 2004 has the edge at 104 lbs dry weight versus 265 lbs for the Larson SEi 180 Fish Series I/O 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: How many people can each boat hold?

The Larson Cabrio 310 2004 is Coast Guard rated for 9 passengers, while the Larson SEi 180 Fish Series I/O 2005 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 Cabrio 310 2004 measures 126" wide, compared to 93" for the Larson SEi 180 Fish Series I/O 2005. 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 Cabrio 310 2004 or the Larson SEi 180 Fish Series I/O 2005?

The Larson SEi 180 Fish Series I/O 2005 has the bigger tank at 23 gallons, versus 16 gallons on the Larson Cabrio 310 2004. That 7-gallon difference translates to roughly 21–35 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Larson Cabrio 310 2004 and Larson SEi 180 Fish Series I/O 2005 from the same manufacturer?

Yes — both the Larson Cabrio 310 2004 and the Larson SEi 180 Fish Series I/O 2005 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 Cabrio 310 2004 vs Larson SEi 180 Fish Series I/O 2005

Larson

Larson Cabrio 310 2004

2004

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Larson

Larson SEi 180 Fish Series I/O 2005

2005

View full specs →

Detailed Evaluation & Buyer Recommendation

Larson Cabrio 310 2004 vs Larson SEi 180 Fish Series I/O 2005 — Same Brand, Different Boat

The Larson Cabrio 310 2004 vs Larson SEi 180 Fish Series I/O 2005 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.

For family outings this is probably the sharpest distinction between the two. The Larson Cabrio 310 2004 is rated for 9 passengers, while the Larson SEi 180 Fish Series I/O 2005 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson Cabrio 310 2004 could be the deciding factor.

Bottom line: Choose the Larson Cabrio 310 2004 if your priority is putting more people on the water — it handles 9 passengers and at 0,0 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 Fish Series I/O 2005 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

ModelCabrio 31

ModelSEi 180 Fish Series I/O

Model Year2004

Model Year2005

Measurements / Dimensions

Beam10 ft. 6 in

Beam7 ft. 9 in

Beam - Meters3.2

Beam - Meters2.36

Beam - Inches126

Beam - Inches93

Deadrise20℃

Deadrise21℃

Draft [max] - Detail34 in

Draft [max] - Detail31 in. max

Draft [max] - Meters0.86

Draft [max] - Meters0.79

Draft [max] - Inches34

Draft [max] - Inches31

Weight - Detail10,400 lbs. apx

Weight - Detail2,650 lbs. apx

Weight - kg4717.36

Weight - kg1202.02

Weight - lbs.104

Weight - lbs.265

Height - DetailBridge clearance with Arch: 9 ft. 4 in

Height - Detailnot available

Height - Meters2.84

Height - Metersnot available

Height - Inches112

Height - Inchesnot available

Length overall - Detail31 ft. 0 in

Length overall - Detail17 ft. 6 in

Length overall - Meters9.45

Length overall - Meters5.33

Length overall - Inches372

Length overall - Inches21

Body / Hull

Hull materialFiberglass

Engine and Drivetrain

Fuel tank capacity - Detail160 gal

Fuel tank capacity - Detail23 gal

Fuel tank capacity - Liters605.67

Fuel tank capacity - Liters87.06

Fuel tank capacity - Gal16

Fuel tank capacity - Gal23

Operational Info

Headroom6 ft. 3 in

Headroomnot available

Water capacity46 gal

Water capacitynot available

Maximum capacitynot available

Maximum capacity1,100 lbs

Maximum peoplenot available

Maximum people6 Persons

Larson Cabrio 310 2004 vs Larson SEi 180 Fish Series I/O 2005 — Common Questions

Which is easier to trailer — the Larson Cabrio 310 2004 or the Larson SEi 180 Fish Series I/O 2005?

For trailering, the Larson Cabrio 310 2004 has the edge at 104 lbs dry weight versus 265 lbs for the Larson SEi 180 Fish Series I/O 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.

How many people can each boat hold?

The Larson Cabrio 310 2004 is Coast Guard rated for 9 passengers, while the Larson SEi 180 Fish Series I/O 2005 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 Cabrio 310 2004 measures 126" wide, compared to 93" for the Larson SEi 180 Fish Series I/O 2005. 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 Cabrio 310 2004 or the Larson SEi 180 Fish Series I/O 2005?

The Larson SEi 180 Fish Series I/O 2005 has the bigger tank at 23 gallons, versus 16 gallons on the Larson Cabrio 310 2004. That 7-gallon difference translates to roughly 21–35 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Larson Cabrio 310 2004 and Larson SEi 180 Fish Series I/O 2005 from the same manufacturer?

Yes — both the Larson Cabrio 310 2004 and the Larson SEi 180 Fish Series I/O 2005 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 Cabrio 310 2004 full specs ← Larson SEi 180 Fish Series I/O 2005 full specs