Larson Cabrio 310 2005 vs Larson SEi 180 O/B 2004 - Boat Spec Comparison

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

For trailering, the Larson SEi 180 O/B 2004 has the edge at 15 lbs dry weight versus 104 lbs for the Larson Cabrio 310 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 O/B 2004 has a documented max rating of 150 hp. Engine specifications for the Larson Cabrio 310 2005 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 Cabrio 310 2005 is Coast Guard rated for 9 passengers, while the Larson SEi 180 O/B 2004 is certified for 5. 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 2005 measures 126" 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.

Q: Which boat has the larger fuel tank — the Larson Cabrio 310 2005 or the Larson SEi 180 O/B 2004?

The Larson SEi 180 O/B 2004 has the bigger tank at 23 gallons, versus 16 gallons on the Larson Cabrio 310 2005. 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 2005 and Larson SEi 180 O/B 2004 from the same manufacturer?

Yes — both the Larson Cabrio 310 2005 and the Larson SEi 180 O/B 2004 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 2005 vs Larson SEi 180 O/B 2004

Larson

Larson Cabrio 310 2005

2005

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Larson

Larson SEi 180 O/B 2004

2004

View full specs →

Detailed Evaluation & Buyer Recommendation

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

The Larson Cabrio 310 2005 vs Larson SEi 180 O/B 2004 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 O/B 2004 tops out at 150 hp. Engine specs for the Larson Cabrio 310 2005 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Larson SEi 180 O/B 2004 carries 23 gallons versus 16 gallons in the Larson Cabrio 310 2005. 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 Cabrio 310 2005 is rated for 9 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 Cabrio 310 2005 could be the deciding factor.

Bottom line: Choose the Larson Cabrio 310 2005 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 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

ModelCabrio 31

ModelSEi 180 O/B

Model Year2005

Model Year2004

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] - Detail30 in. max

Draft [max] - Meters0.86

Draft [max] - Meters0.76

Draft [max] - Inches34

Draft [max] - Inches3

Weight - Detail10,400 lbs. apx

Weight - Detail1,500 lbs. apx

Weight - kg4717.36

Weight - kg680.39

Weight - lbs.104

Weight - lbs.15

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

Height [transom]not available

Height [transom]20 in

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

Engine maxnot available

Engine max150 HP

Operational Info

Headroom6 ft. 3 in

Headroomnot available

Water capacity46 gal

Water capacitynot available

Maximum capacitynot available

Maximum capacity1,475 lbs

Larson Cabrio 310 2005 vs Larson SEi 180 O/B 2004 — Common Questions

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

For trailering, the Larson SEi 180 O/B 2004 has the edge at 15 lbs dry weight versus 104 lbs for the Larson Cabrio 310 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 O/B 2004 has a documented max rating of 150 hp. Engine specifications for the Larson Cabrio 310 2005 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 Cabrio 310 2005 is Coast Guard rated for 9 passengers, while the Larson SEi 180 O/B 2004 is certified for 5. 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 2005 measures 126" 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 Cabrio 310 2005 or the Larson SEi 180 O/B 2004?

The Larson SEi 180 O/B 2004 has the bigger tank at 23 gallons, versus 16 gallons on the Larson Cabrio 310 2005. 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 2005 and Larson SEi 180 O/B 2004 from the same manufacturer?

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