Klamath 12 ft. Jac 2007 boat specs
Klamath
Klamath 12 ft. Jac 2007
2007
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VS
Klamath 18 ft. OSCC 2008 boat specs
Klamath
Klamath 18 ft. OSCC 2008
2008
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Klamath 12 ft. Jac 2007 vs Klamath 18 ft. OSCC 2008 — Same Brand, Different Boat

Matching a flat Klamath 12 ft. Jac 2007 against a modified vee Klamath 18 ft. OSCC 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.

Size is the most obvious dividing line here. The Klamath 18 ft. OSCC 2008 measures 18,0 feet overall (2008), giving it roughly 6,0 additional feet of deck space compared to the Klamath 12 ft. Jac 2007 at 12,0 feet (2007). Weight tells a clearer story for trailering families: the Klamath 12 ft. Jac 2007 tips the scales at 144 lbs — 137 lbs more than the Klamath 18 ft. OSCC 2008 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.

The power gap is worth calling out. Rated to 75 hp, the Klamath 18 ft. OSCC 2008 has a 65-hp advantage over the Klamath 12 ft. Jac 2007's 10-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 Klamath 18 ft. OSCC 2008 is rated for 8 passengers, while the Klamath 12 ft. Jac 2007 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Klamath 18 ft. OSCC 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Klamath 18 ft. OSCC 2008 comes in at 0 lbs per hp versus 15 lbs per hp for the Klamath 12 ft. Jac 2007. 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 Klamath 18 ft. OSCC 2008 if your priority is putting more people on the water — it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Klamath 12 ft. Jac 2007 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
MakeKlamath
MakeKlamath
Model12 ft. Jac
Model18 ft. OSCC
Model Year2007
Model Year2008
Measurements / Dimensions
Beam53 in
Beam84 in
Beam - Meters1.35
Beam - Meters2.13
Beam - Inches53
Beam - Inches84
Depth - DetailBow: 18.5 in. Midship: 14.5 in. Transom: 17.5 in
Depth - DetailBow: 45.5 in. Midship: 31 in. Transom: 28.5 in
Depth - Centimeters48.26
Depth - Centimeters116.84
Depth - Inches18.5
Depth - Inches45.5
Weight - Detail144 lbs
Weight - Detail700 lbs
Weight - kg65.32
Weight - kg317.51
Weight - lbs.144
Weight - lbs.7
Width [transom] - Detail38 in
Width [transom] - Detail56 in
Height [transom]15 in
Height [transom]20 in
Length - Feet12
Length - Feet18
Length - Inches6
Length - Inches4
Length overall - Detail12 ft. 6 in
Length overall - Detail18 ft. 4 in
Length overall - Meters3.81
Length overall - Meters5.59
Length overall - Inches15
Length overall - Inches22
Deadrisenot available
Deadrise8℃ at transom
Body / Hull
Hull thickness0.063 in
Hull thicknessSides: 0.063 in. Bottom: 0.100 in
Hull typeFlat
Hull typeModified Vee
Engine and Drivetrain
Drive typeOutboard
Drive typeOutboard
Engine max9.9 hp
Engine max75 hp
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail18 gal
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters68.14
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal18
Operational Info
Maximum capacity600 lbs
Maximum capacity1,735 lbs
Maximum people3
Maximum people8

Klamath 12 ft. Jac 2007 vs Klamath 18 ft. OSCC 2008 — Common Questions

Which is the larger boat — the Klamath 12 ft. Jac 2007 or the Klamath 18 ft. OSCC 2008?
The Klamath 18 ft. OSCC 2008 is the longer of the two at 18,0 feet overall. The Klamath 12 ft. Jac 2007 comes in at 12,0 feet, making it roughly 6,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Klamath 12 ft. Jac 2007 or the Klamath 18 ft. OSCC 2008?
For trailering, the Klamath 18 ft. OSCC 2008 has the edge at 7 lbs dry weight versus 144 lbs for the Klamath 12 ft. Jac 2007. 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 Klamath 18 ft. OSCC 2008 is rated to a maximum of 75 hp, giving it the larger power ceiling. The Klamath 12 ft. Jac 2007 tops out at 10 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 Klamath 12 ft. Jac 2007 is Coast Guard rated for 3 passengers, while the Klamath 18 ft. OSCC 2008 is certified for 8. 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 Klamath 18 ft. OSCC 2008 has a better power-to-weight ratio at 0 lbs per hp compared to 15 lbs per hp for the Klamath 12 ft. Jac 2007. 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 Klamath 18 ft. OSCC 2008 measures 84" wide, compared to 53" for the Klamath 12 ft. Jac 2007. 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 Klamath 12 ft. Jac 2007 and Klamath 18 ft. OSCC 2008 from the same manufacturer?
Yes — both the Klamath 12 ft. Jac 2007 and the Klamath 18 ft. OSCC 2008 are built by Klamath. 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.