Monterey 378 SS 2020 boat specs
Monterey
Monterey 378 SS 2020
2020
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VS
Monterey M5 2011 boat specs
Monterey
Monterey M5 2011
2011
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Monterey 378 SS 2020 vs Monterey M5 2011 — Same Brand, Different Boat

The Monterey 378 SS 2020 vs Monterey M5 2011 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.

Size is the most obvious dividing line here. The Monterey 378 SS 2020 measures 37,0 feet overall (2020), giving it roughly 11,2 additional feet of deck space compared to the Monterey M5 2011 at 25,8 feet (2011). Weight tells a clearer story for trailering families: the Monterey 378 SS 2020 tips the scales at 16 000 lbs — 15 948 lbs more than the Monterey M5 2011 at 52 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 500 hp, the Monterey 378 SS 2020 has a 75-hp advantage over the Monterey M5 2011's 425-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Monterey M5 2011 carries 8 gallons versus 2 gallons in the Monterey 378 SS 2020. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Monterey 378 SS 2020 is rated for up to 11 people. Passenger data for the Monterey M5 2011 wasn't available.

Bottom line: The Monterey 378 SS 2020 at 37,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Monterey M5 2011 at 25,8 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
Measurements / Dimensions
Length overall - Detail37.00 ft
Length overall - Detailnot available
Length - Feet37
Length - Feet25.83
Length overall - Meters11.28
Length overall - Metersnot available
Length overall - Inches444
Length overall - Inchesnot available
Beam11.00 ft
Beam8 ft. 6 in. (2.5 m)
Beam - Meters3.35
Beam - Meters2.59
Beam - Inches132
Beam - Inches102
Draft [max] - Detail3.80 ft
Draft [max] - Detail41 in. (104.1 cm)
Draft [max] - Meters1.16
Draft [max] - Meters1.04
Draft [max] - Inches46
Draft [max] - Inches41
Draft Min2.60 ft
Draft Minnot available
Displacement16000.00 lbs
Displacementnot available
Deadrisenot available
Deadrise20°
Draft [drive up] - Detailnot available
Draft [drive up] - Detail26 in. (66 cm)
Draft [drive up] metersnot available
Draft [drive up] meters0.66
Draft [drive up] inchesnot available
Draft [drive up] inches26
Weight - Detailnot available
Weight - Detail5,200 lbs. (2,359 kg)
Weight - kgnot available
Weight - kg2358.68
Weight - lbs.not available
Weight - lbs.52
Length [over all with swim platform]not available
Length [over all with swim platform]25 ft. 10 in. (7.9 m)
Engine and Drivetrain
Fuel tank capacity - Gal2
Fuel tank capacity - Gal8
Fuel tank capacity - Liters757.08
Fuel tank capacity - Liters302.83
Horsepower500 hp
Horsepowernot available
Drive typeinboard
Drive typeInboard
Engine 2 Horsepower500 hp
Engine 2 Horsepowernot available
Engine 2 Drive Typeinboard
Engine 2 Drive Typenot available
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail80 gal. (302.8 l)
Fuel typenot available
Fuel typeGas
Engine maxnot available
Engine max425 hp (316.9 kW)
Operational Info
Sleeping capacity2
Sleeping capacitynot available
Cabins1
Cabinsnot available
Head1
Headnot available
Water capacity49
Water capacity15 gal. (56.8 l)
Holding tank capacity - Gal28
Holding tank capacity - Gal12
Holding tank capacity - Liters105.99
Holding tank capacity - Liters45.42
Boat typePower
Boat typenot available
Holding tank capacity - Detailnot available
Holding tank capacity - DetailManual: 12 gal. (45.42 l) VacuFlush: 9 gal. (34.06 l)
General Boat Info
Makenot available
MakeMonterey
Modelnot available
ModelM5
Model Yearnot available
Model Year2011
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee

Monterey 378 SS 2020 vs Monterey M5 2011 — Common Questions

Which is the larger boat — the Monterey 378 SS 2020 or the Monterey M5 2011?
The Monterey 378 SS 2020 is the longer of the two at 37,0 feet overall. The Monterey M5 2011 comes in at 25,8 feet, making it roughly 11,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Monterey 378 SS 2020 or the Monterey M5 2011?
For trailering, the Monterey M5 2011 has the edge at 52 lbs dry weight versus 16 000 lbs for the Monterey 378 SS 2020. 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 Monterey 378 SS 2020 is rated to a maximum of 500 hp, giving it the larger power ceiling. The Monterey M5 2011 tops out at 425 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 passengers can the Monterey 378 SS 2020 carry?
The Monterey 378 SS 2020 has an official capacity rating of 11 people. Capacity data wasn't available for the other model in this comparison — verify directly with the dealer.
Which boat is wider, and does it affect trailering?
The Monterey 378 SS 2020 measures 132" wide, compared to 102" for the Monterey M5 2011. 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 Monterey 378 SS 2020 or the Monterey M5 2011?
The Monterey M5 2011 has the bigger tank at 8 gallons, versus 2 gallons on the Monterey 378 SS 2020. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Monterey 378 SS 2020 and Monterey M5 2011 from the same manufacturer?
Yes — both the Monterey 378 SS 2020 and the Monterey M5 2011 are built by Monterey. 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.