Larson FX 1850 DC O/B 2013 boat specs
Larson
Larson FX 1850 DC O/B 2013
2013
View full specs →
VS
Larson Senza 186 I/O 2008 boat specs
Larson
Larson Senza 186 I/O 2008
2008
View full specs →

Larson FX 1850 DC O/B 2013 vs Larson Senza 186 I/O 2008 — Same Brand, Different Boat

Matching a deep vee Larson FX 1850 DC O/B 2013 against a modified vee Larson Senza 186 I/O 2008 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 FX 1850 DC O/B 2013 at 18,5 ft versus Larson Senza 186 I/O 2008 at 18,0 ft. Weight tells a clearer story for trailering families: the Larson FX 1850 DC O/B 2013 tips the scales at 2 219 lbs — 2 192 lbs more than the Larson Senza 186 I/O 2008 at 27 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 225 hp, the Larson Senza 186 I/O 2008 has a 50-hp advantage over the Larson FX 1850 DC O/B 2013's 175-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 Senza 186 I/O 2008 carries 29 gallons versus 3 gallons in the Larson FX 1850 DC O/B 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 Senza 186 I/O 2008 is rated for 9 passengers, while the Larson FX 1850 DC O/B 2013 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson Senza 186 I/O 2008 could be the deciding factor.

Bottom line: Choose the Larson Senza 186 I/O 2008 if your priority is putting more people on the water — it handles 9 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Larson FX 1850 DC O/B 2013 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
MakeLarson
ModelFX 1850 DC O/B
ModelSenza 186 I/O
Model Year2013
Model Year2008
Measurements / Dimensions
Beam7 ft. 8 in. (2.39 m)
Beam7 ft. 10 in. (2.39 m)
Beam - Meters2.34
Beam - Meters2.39
Beam - Inches92
Beam - Inches94
Deadrise21°
Deadrise21℃
Weight - Detail2,219 lbs. (1,000 kg) with Mercury 115 4S
Weight - Detail2,700 lbs. (1,225 kg)
Weight - kg1006.52
Weight - kg1224.7
Weight - lbs.2219
Weight - lbs.27
Height [transom]20 in. (51 cm)
Height [transom]not available
Length - Feet18.5
Length - Feet18
Length overall - Detail18 ft. 6 in. (5.64 m)
Length overall - Detail18 ft. 6 in. (5.64 m)
Length overall - Meters5.64
Length overall - Meters5.64
Length overall - Inches222
Length overall - Inches222
Draft [max] - Detailnot available
Draft [max] - Detail33 in. (83.8 cm)
Draft [max] - Metersnot available
Draft [max] - Meters0.84
Draft [max] - Inchesnot available
Draft [max] - Inches33
Length - Metersnot available
Length - Meters5.64
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialComposite
Hull materialFiberglass
Hull typeDeep Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail30 gal. (113 l)
Fuel tank capacity - Detail29 gal. (109.8 l)
Fuel tank capacity - Liters113.56
Fuel tank capacity - Liters109.78
Fuel tank capacity - Gal3
Fuel tank capacity - Gal29
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeInboard/Outboard
Engine max175 hp (130 kW)
Engine max225 hp
Operational Info
Maximum capacity1,850 lbs. (839 kg)
Maximum capacity1,400 lbs. (635 kg)
Maximum people7
Maximum people9
Trailer Info
Trailer - DetailCustom color matched FX 3000 DB with swing tongue
Trailer - DetailEZ Loader with brakes
Trailer - Length over all21 ft. 8 in. (6.6 m)
Trailer - Length over allnot available

Larson FX 1850 DC O/B 2013 vs Larson Senza 186 I/O 2008 — Common Questions

Which is the larger boat — the Larson FX 1850 DC O/B 2013 or the Larson Senza 186 I/O 2008?
The Larson FX 1850 DC O/B 2013 is the longer of the two at 18,5 feet overall. The Larson Senza 186 I/O 2008 comes in at 18,0 feet, making it roughly 0,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Larson FX 1850 DC O/B 2013 or the Larson Senza 186 I/O 2008?
For trailering, the Larson Senza 186 I/O 2008 has the edge at 27 lbs dry weight versus 2 219 lbs for the Larson FX 1850 DC O/B 2013. 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 Senza 186 I/O 2008 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Larson FX 1850 DC O/B 2013 tops out at 175 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 FX 1850 DC O/B 2013 is Coast Guard rated for 7 passengers, while the Larson Senza 186 I/O 2008 is certified for 9. 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 Senza 186 I/O 2008 measures 94" wide, compared to 92" for the Larson FX 1850 DC O/B 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 FX 1850 DC O/B 2013 or the Larson Senza 186 I/O 2008?
The Larson Senza 186 I/O 2008 has the bigger tank at 29 gallons, versus 3 gallons on the Larson FX 1850 DC O/B 2013. That 26-gallon difference translates to roughly 78–130 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Larson FX 1850 DC O/B 2013 and Larson Senza 186 I/O 2008 from the same manufacturer?
Yes — both the Larson FX 1850 DC O/B 2013 and the Larson Senza 186 I/O 2008 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.