Larson 180 Sport I/O 2007 vs Larson Marine San Marino 1990 - Boat Spec Comparison

Q: Which is the larger boat — the Larson 180 Sport I/O 2007 or the Larson Marine San Marino 1990?

The Larson Marine San Marino 1990 is the longer of the two at 25,0 feet overall. The Larson 180 Sport I/O 2007 comes in at 17,0 feet, making it roughly 8,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The Larson Marine San Marino 1990 is rated to a maximum of 260 hp, giving it the larger power ceiling. The Larson 180 Sport I/O 2007 tops out at 190 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 180 Sport I/O 2007 is Coast Guard rated for 8 passengers, while the Larson Marine San Marino 1990 is certified for 7. 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: Are the Larson 180 Sport I/O 2007 and Larson Marine San Marino 1990 from the same manufacturer?

Yes — both the Larson 180 Sport I/O 2007 and the Larson Marine San Marino 1990 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 180 Sport I/O 2007 vs Larson Marine San Marino 1990

Larson

Larson 180 Sport I/O 2007

2007

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Larson

Larson Marine San Marino 1990

1990

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Detailed Evaluation & Buyer Recommendation

Larson 180 Sport I/O 2007 vs Larson Marine San Marino 1990 — Same Brand, Different Boat

The Larson 180 Sport I/O 2007 vs Larson Marine San Marino 1990 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 power gap is worth calling out. Rated to 260 hp, the Larson Marine San Marino 1990 has a 70-hp advantage over the Larson 180 Sport I/O 2007's 190-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Larson 180 Sport I/O 2007 is rated for 8 passengers, while the Larson Marine San Marino 1990 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson 180 Sport I/O 2007 could be the deciding factor.

Bottom line: Choose the Larson 180 Sport I/O 2007 if your priority is putting more people on the water — it handles 8 passengers and at 17,0 ft it has the deck room to back that rating up comfortably. The Larson Marine San Marino 1990 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.

General Boat Info

MakeLarson

Makenot available

Model180 Sport I/O

Modelnot available

Model Year2007

Model Yearnot available

Measurements / Dimensions

Beam7 ft. 4 in. (2.24 m)

Beamnot available

Beam - Meters2.24

Beam - Metersnot available

Beam - Inches88

Beam - Inchesnot available

Deadrise21℃

Deadrisenot available

Draft [max] - Detail31 in. (78.7 cm)

Draft [max] - Detailnot available

Draft [max] - Meters0.79

Draft [max] - Metersnot available

Draft [max] - Inches31

Draft [max] - Inchesnot available

Weight - Detail2,375 lbs. (1,080 kg)

Weight - Detailnot available

Weight - kg1077.28

Weight - kgnot available

Weight - lbs.2375

Weight - lbs.not available

Length - Meters5.36

Length - Metersnot available

Length - Feet17

Length - Feet25

Length - Inches7

Length - Inchesnot available

Length overall - Detail17 ft. 7 in. (5.36 m)

Length overall - Detail25.00 ft

Length overall - Meters5.36

Length overall - Meters7.62

Length overall - Inches211

Length overall - Inches300

Body / Hull

Hull materialFiberglass

Hull materialnot available

Hull typeModified Vee

Hull typenot available

Engine and Drivetrain

Engine/s standardVolvo Penta 4.3 GL

Engine/s standardnot available

Fuel tank capacity - Detail23 gal. (87 l)

Fuel tank capacity - Detailnot available

Fuel tank capacity - Liters87.06

Fuel tank capacity - Litersnot available

Fuel tank capacity - Gal23

Fuel tank capacity - Galnot available

Fuel typeGas

Drive typeInboard/Outboard

Drive typeinboard

Engine max190 hp

Engine maxnot available

Engine makenot available

Engine makeMercury

Horsepowernot available

Horsepower260 hp

Operational Info

Maximum capacity1,150 lbs. (522 kg)

Maximum capacitynot available

Maximum people8

Maximum peoplenot available

Boat typenot available

Boat typePower

Trailer Info

Trailer - DetailCustom EZ Loader

Trailer - Detailnot available

Larson 180 Sport I/O 2007 vs Larson Marine San Marino 1990 — Common Questions

Which is the larger boat — the Larson 180 Sport I/O 2007 or the Larson Marine San Marino 1990?

The Larson Marine San Marino 1990 is the longer of the two at 25,0 feet overall. The Larson 180 Sport I/O 2007 comes in at 17,0 feet, making it roughly 8,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The Larson Marine San Marino 1990 is rated to a maximum of 260 hp, giving it the larger power ceiling. The Larson 180 Sport I/O 2007 tops out at 190 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 180 Sport I/O 2007 is Coast Guard rated for 8 passengers, while the Larson Marine San Marino 1990 is certified for 7. 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.

Are the Larson 180 Sport I/O 2007 and Larson Marine San Marino 1990 from the same manufacturer?

Yes — both the Larson 180 Sport I/O 2007 and the Larson Marine San Marino 1990 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 180 Sport I/O 2007 full specs ← Larson Marine San Marino 1990 full specs