SeaArk Forecast 156 2011 boat specs
SeaArk
SeaArk Forecast 156 2011
2011
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VS
SeaArk MV Jon 1448MV 2008 boat specs
SeaArk
SeaArk MV Jon 1448MV 2008
2008
View full specs →

SeaArk Forecast 156 2011 vs SeaArk MV Jon 1448MV 2008 — A Close Look at Two Modified Vees

When two boats share the same hull type — in this case both the SeaArk Forecast 156 2011 and the SeaArk MV Jon 1448MV 2008 are modified vee designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — SeaArk Forecast 156 2011 at 15,5 ft versus SeaArk MV Jon 1448MV 2008 at 14,0 ft. Weight tells a clearer story for trailering families: the SeaArk MV Jon 1448MV 2008 tips the scales at 305 lbs — 298 lbs less than the SeaArk Forecast 156 2011 at 7 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.

Both boats share a closely matched power ceiling — 40 hp for the SeaArk Forecast 156 2011 and 30 hp for the SeaArk MV Jon 1448MV 2008. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.

Both boats are rated for 4 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk Forecast 156 2011 comes in at 0 lbs per hp versus 10 lbs per hp for the SeaArk MV Jon 1448MV 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.

Bottom line: The SeaArk Forecast 156 2011 and SeaArk MV Jon 1448MV 2008 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeSeaArk
MakeSeaArk
ModelForecast 156
ModelMV Jon 1448MV
Model Year2011
Model Year2008
Measurements / Dimensions
Beam71 in. (1.80 m)
Beam67 in
Beam - Meters1.8
Beam - Meters1.7
Beam - Inches71
Beam - Inches67
Depth - Detail21 in. (0.53 m)
Depth - Detail20 in
Depth - Centimeters53.34
Depth - Centimeters50.8
Depth - Inches21
Depth - Inches2
Weight - Detail700 lbs. (308.5 kg)
Weight - Detail305 lbs
Weight - kg317.51
Weight - kg138.35
Weight - lbs.7
Weight - lbs.305
Width [transom] - Detail50 in. (1.27 m)
Width [transom] - Detail48 in
Height [transom]20 in. (0.51 m)
Height [transom]15 / 20 in
Length - Feet15.5
Length - Feet14
Length overall - Detail15 ft. 6 in. (4.72 m)
Length overall - Detail14 ft. 0 in
Length overall - Meters4.72
Length overall - Meters4.27
Length overall - Inches186
Length overall - Inches168
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.100 in. (2.54 mm)
Hull thickness0.1
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeOutboard
Engine max40 hp (29.8 kW)
Engine max30 hp
Operational Info
Maximum capacity875 lbs. (396.9 kg)
Maximum capacity865 lbs
Maximum people4 / 510 lbs. (231.3 kg)
Maximum people4 / 550 lbs

SeaArk Forecast 156 2011 vs SeaArk MV Jon 1448MV 2008 — Common Questions

Which is the larger boat — the SeaArk Forecast 156 2011 or the SeaArk MV Jon 1448MV 2008?
The SeaArk Forecast 156 2011 is the longer of the two at 15,5 feet overall. The SeaArk MV Jon 1448MV 2008 comes in at 14,0 feet, making it roughly 1,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the SeaArk Forecast 156 2011 or the SeaArk MV Jon 1448MV 2008?
For trailering, the SeaArk Forecast 156 2011 has the edge at 7 lbs dry weight versus 305 lbs for the SeaArk MV Jon 1448MV 2008. 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 SeaArk Forecast 156 2011 is rated to a maximum of 40 hp, giving it the larger power ceiling. The SeaArk MV Jon 1448MV 2008 tops out at 30 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 SeaArk Forecast 156 2011 is Coast Guard rated for 4 passengers, while the SeaArk MV Jon 1448MV 2008 is certified for 4. 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 has the better power-to-weight ratio?
The SeaArk Forecast 156 2011 has a better power-to-weight ratio at 0 lbs per hp compared to 10 lbs per hp for the SeaArk MV Jon 1448MV 2008. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Which boat is wider, and does it affect trailering?
The SeaArk Forecast 156 2011 measures 71" wide, compared to 67" for the SeaArk MV Jon 1448MV 2008. 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.
Are the SeaArk Forecast 156 2011 and SeaArk MV Jon 1448MV 2008 from the same manufacturer?
Yes — both the SeaArk Forecast 156 2011 and the SeaArk MV Jon 1448MV 2008 are built by SeaArk. 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.