SeaArk 1660MVT  Super Tunnel Jon 2012 boat specs
SeaArk
SeaArk 1660MVT Super Tunnel Jon 2012
2012
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VS
SeaArk Forecast 156 2012 boat specs
SeaArk
SeaArk Forecast 156 2012
2012
View full specs →

SeaArk 1660MVT Super Tunnel Jon 2012 vs SeaArk Forecast 156 2012 — Same Brand, Different Boat

Matching a tunnel SeaArk 1660MVT Super Tunnel Jon 2012 against a modified vee SeaArk Forecast 156 2012 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 — SeaArk 1660MVT Super Tunnel Jon 2012 at 16,0 ft versus SeaArk Forecast 156 2012 at 15,5 ft. Weight tells a clearer story for trailering families: the SeaArk 1660MVT Super Tunnel Jon 2012 tips the scales at 475 lbs — 468 lbs more than the SeaArk Forecast 156 2012 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 — 50 hp for the SeaArk 1660MVT Super Tunnel Jon 2012 and 40 hp for the SeaArk Forecast 156 2012. 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.

For family outings this is probably the sharpest distinction between the two. The SeaArk 1660MVT Super Tunnel Jon 2012 is rated for 6 passengers, while the SeaArk Forecast 156 2012 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk 1660MVT Super Tunnel Jon 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk Forecast 156 2012 comes in at 0 lbs per hp versus 10 lbs per hp for the SeaArk 1660MVT Super Tunnel Jon 2012. 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: Choose the SeaArk 1660MVT Super Tunnel Jon 2012 if your priority is putting more people on the water — it handles 6 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The SeaArk Forecast 156 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.
General Boat Info
MakeSeaArk
MakeSeaArk
Model1660MVT Super Tunnel Jon
ModelForecast 156
Model Year2012
Model Year2012
Measurements / Dimensions
Beam82 in
Beam71 in
Beam - Meters2.08
Beam - Meters1.8
Beam - Inches82
Beam - Inches71
Depth - Detail24 in
Depth - Detail21 in
Depth - Centimeters60.96
Depth - Centimeters53.34
Depth - Inches24
Depth - Inches21
Weight - Detail475 lbs
Weight - Detail700 lbs
Weight - kg215.46
Weight - kg317.51
Weight - lbs.475
Weight - lbs.7
Width [transom] - DetailBottom: 60 in
Width [transom] - DetailBottom: 50 in
Length - Feet16
Length - Feet15.5
Length overall - Detail16 ft
Length overall - Detail15 ft. 6 in
Length overall - Meters4.88
Length overall - Meters4.72
Length overall - Inches192
Length overall - Inches186
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.100 in
Hull thickness0.100 in
Hull typeTunnel
Hull typeModified Vee
Engine and Drivetrain
Fuel typeGas
Fuel typeGas
Engine max50 / 60 hp
Engine max40 hp
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail15 gal
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters56.78
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal15
Drive typenot available
Drive typeOutboard
Operational Info
Maximum capacity1,250 lbs
Maximum capacitynot available
Maximum people6 / 835 lbs
Maximum peoplenot available

SeaArk 1660MVT Super Tunnel Jon 2012 vs SeaArk Forecast 156 2012 — Common Questions

Which is the larger boat — the SeaArk 1660MVT Super Tunnel Jon 2012 or the SeaArk Forecast 156 2012?
The SeaArk 1660MVT Super Tunnel Jon 2012 is the longer of the two at 16,0 feet overall. The SeaArk Forecast 156 2012 comes in at 15,5 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 SeaArk 1660MVT Super Tunnel Jon 2012 or the SeaArk Forecast 156 2012?
For trailering, the SeaArk Forecast 156 2012 has the edge at 7 lbs dry weight versus 475 lbs for the SeaArk 1660MVT Super Tunnel Jon 2012. 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 1660MVT Super Tunnel Jon 2012 is rated to a maximum of 50 hp, giving it the larger power ceiling. The SeaArk Forecast 156 2012 tops out at 40 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 1660MVT Super Tunnel Jon 2012 is Coast Guard rated for 6 passengers, while the SeaArk Forecast 156 2012 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 2012 has a better power-to-weight ratio at 0 lbs per hp compared to 10 lbs per hp for the SeaArk 1660MVT Super Tunnel Jon 2012. 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 1660MVT Super Tunnel Jon 2012 measures 82" wide, compared to 71" for the SeaArk Forecast 156 2012. 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 1660MVT Super Tunnel Jon 2012 and SeaArk Forecast 156 2012 from the same manufacturer?
Yes — both the SeaArk 1660MVT Super Tunnel Jon 2012 and the SeaArk Forecast 156 2012 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.