Marathon Jon - DN 1436 2009 boat specs
Marathon
Marathon Jon - DN 1436 2009
2009
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VS
Marathon Seneca 16RS 2012 boat specs
Marathon
Marathon Seneca 16RS 2012
2012
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Marathon Jon - DN 1436 2009 vs Marathon Seneca 16RS 2012 — Same Brand, Different Boat

Matching a flat Marathon Jon - DN 1436 2009 against a modified vee Marathon Seneca 16RS 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 — Marathon Jon - DN 1436 2009 at 14,0 ft versus Marathon Seneca 16RS 2012 at 16,0 ft. Weight tells a clearer story for trailering families: the Marathon Seneca 16RS 2012 tips the scales at 312 lbs — 299 lbs less than the Marathon Jon - DN 1436 2009 at 13 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 40 hp, the Marathon Seneca 16RS 2012 has a 25-hp advantage over the Marathon Jon - DN 1436 2009's 15-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 Marathon Seneca 16RS 2012 is rated for 7 passengers, while the Marathon Jon - DN 1436 2009 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Marathon Seneca 16RS 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Marathon Jon - DN 1436 2009 comes in at 1 lbs per hp versus 8 lbs per hp for the Marathon Seneca 16RS 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 Marathon Seneca 16RS 2012 if your priority is putting more people on the water — it handles 7 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Marathon Jon - DN 1436 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.
General Boat Info
MakeMarathon
MakeMarathon
ModelJon - DN 1436
ModelSeneca 16RS
Model Year2009
Model Year2012
Measurements / Dimensions
Depth - Detail14 in
Depth - Detail28 in
Depth - Centimeters35.56
Depth - Centimeters71.12
Depth - Inches14
Depth - Inches28
Weight - Detail130 lbs
Weight - Detail312 lbs
Weight - kg58.97
Weight - kg141.52
Weight - lbs.13
Weight - lbs.312
Width [transom] - Detail53 in
Width [transom] - Detailnot available
Height [transom]15 in
Height [transom]20 in
Length - Feet14
Length - Feet16
Length - Inches1
Length - Inchesnot available
Length overall - Detail14 ft. 1 in
Length overall - Detail16 ft
Length overall - Meters4.29
Length overall - Meters4.88
Length overall - Inches169
Length overall - Inches192
Beamnot available
Beam70 in
Beam - Metersnot available
Beam - Meters1.78
Beam - Inchesnot available
Beam - Inches7
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.05 in
Hull thickness0.080 in
Hull typeFlat
Hull typeModified Vee
Engine and Drivetrain
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeOutboard
Engine max15 hp
Engine max40 hp
Operational Info
Maximum people3 / 580 lbs
Maximum people7 / 915 lbs
Maximum capacitynot available
Maximum capacity1,230 lbs

Marathon Jon - DN 1436 2009 vs Marathon Seneca 16RS 2012 — Common Questions

Which is the larger boat — the Marathon Jon - DN 1436 2009 or the Marathon Seneca 16RS 2012?
The Marathon Seneca 16RS 2012 is the longer of the two at 16,0 feet overall. The Marathon Jon - DN 1436 2009 comes in at 14,0 feet, making it roughly 2,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Marathon Jon - DN 1436 2009 or the Marathon Seneca 16RS 2012?
For trailering, the Marathon Jon - DN 1436 2009 has the edge at 13 lbs dry weight versus 312 lbs for the Marathon Seneca 16RS 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 Marathon Seneca 16RS 2012 is rated to a maximum of 40 hp, giving it the larger power ceiling. The Marathon Jon - DN 1436 2009 tops out at 15 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 Marathon Jon - DN 1436 2009 is Coast Guard rated for 3 passengers, while the Marathon Seneca 16RS 2012 is certified for 7. 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 Marathon Jon - DN 1436 2009 has a better power-to-weight ratio at 1 lbs per hp compared to 8 lbs per hp for the Marathon Seneca 16RS 2012. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Are the Marathon Jon - DN 1436 2009 and Marathon Seneca 16RS 2012 from the same manufacturer?
Yes — both the Marathon Jon - DN 1436 2009 and the Marathon Seneca 16RS 2012 are built by Marathon. 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.