Larson Marine San Marino 1990 vs Larson SEi 180 I/O 2004 - Boat Spec Comparison

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 SEi 180 I/O 2004 tops out at 150 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 Marine San Marino 1990 is Coast Guard rated for 7 passengers, while the Larson SEi 180 I/O 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: Are the Larson Marine San Marino 1990 and Larson SEi 180 I/O 2004 from the same manufacturer?

Yes — both the Larson Marine San Marino 1990 and the Larson SEi 180 I/O 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 Marine San Marino 1990 vs Larson SEi 180 I/O 2004

Larson

Larson Marine San Marino 1990

1990

View full specs →

Larson

Larson SEi 180 I/O 2004

2004

View full specs →

Detailed Evaluation & Buyer Recommendation

Larson Marine San Marino 1990 vs Larson SEi 180 I/O 2004 — Same Brand, Different Boat

The Larson Marine San Marino 1990 vs Larson SEi 180 I/O 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 power gap is worth calling out. Rated to 260 hp, the Larson Marine San Marino 1990 has a 110-hp advantage over the Larson SEi 180 I/O 2004's 150-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 Marine San Marino 1990 is rated for 7 passengers, while the Larson SEi 180 I/O 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 Marine San Marino 1990 could be the deciding factor.

Bottom line: Choose the Larson Marine San Marino 1990 if your priority is putting more people on the water — it handles 7 passengers and at 25,0 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 I/O 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.

Measurements / Dimensions

Length overall - Detail25.00 ft

Length overall - Detail17 ft. 6 in

Length - Feet25

Length - Feetnot available

Length overall - Meters7.62

Length overall - Meters5.33

Length overall - Inches300

Length overall - Inches21

Beamnot available

Beam7 ft. 9 in

Beam - Metersnot available

Beam - Meters2.36

Beam - Inchesnot available

Beam - Inches93

Deadrisenot available

Deadrise21℃

Draft [max] - Detailnot available

Draft [max] - Detail31 in

Draft [max] - Metersnot available

Draft [max] - Meters0.79

Draft [max] - Inchesnot available

Draft [max] - Inches31

Weight - Detailnot available

Weight - Detail2,365 lbs. apx

Weight - kgnot available

Weight - kg1072.75

Weight - lbs.not available

Weight - lbs.2365

Engine and Drivetrain

Engine makeMercury

Engine makenot available

Horsepower260 hp

Horsepowernot available

Fuel typeGas

Fuel typenot available

Drive typeinboard

Drive typenot available

Fuel tank capacity - Detailnot available

Fuel tank capacity - Detail23 gal

Fuel tank capacity - Litersnot available

Fuel tank capacity - Liters87.06

Fuel tank capacity - Galnot available

Fuel tank capacity - Gal23

Engine maxnot available

Engine max150 HP

Operational Info

Boat typePower

Boat typenot available

Maximum capacitynot available

Maximum capacity1,275 lbs

General Boat Info

Makenot available

MakeLarson

Modelnot available

ModelSEi 180 I/O

Model Yearnot available

Model Year2004

Body / Hull

Hull materialnot available

Hull materialFiberglass

Larson Marine San Marino 1990 vs Larson SEi 180 I/O 2004 — Common Questions

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 SEi 180 I/O 2004 tops out at 150 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 Marine San Marino 1990 is Coast Guard rated for 7 passengers, while the Larson SEi 180 I/O 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.

Are the Larson Marine San Marino 1990 and Larson SEi 180 I/O 2004 from the same manufacturer?

Yes — both the Larson Marine San Marino 1990 and the Larson SEi 180 I/O 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 Marine San Marino 1990 full specs ← Larson SEi 180 I/O 2004 full specs