Klamath 18 ft. Open 2005 boat specs
Klamath
Klamath 18 ft. Open 2005
2005
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VS
Klamath 19 ft. GTCC 2008 boat specs
Klamath
Klamath 19 ft. GTCC 2008
2008
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Klamath 18 ft. Open 2005 vs Klamath 19 ft. GTCC 2008 — Same Brand, Different Boat

The Klamath 18 ft. Open 2005 vs Klamath 19 ft. GTCC 2008 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.

On paper these two are close siblings in the size department — Klamath 18 ft. Open 2005 at 18,0 ft versus Klamath 19 ft. GTCC 2008 at 18,0 ft. At 5 lbs and 75 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 115 hp, the Klamath 19 ft. GTCC 2008 has a 40-hp advantage over the Klamath 18 ft. Open 2005's 75-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. Open 2005 is rated for 8 passengers, while the Klamath 19 ft. GTCC 2008 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Klamath 18 ft. Open 2005 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Klamath 18 ft. Open 2005 comes in at 0 lbs per hp versus 1 lbs per hp for the Klamath 19 ft. GTCC 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: Choose the Klamath 18 ft. Open 2005 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 19 ft. GTCC 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.
General Boat Info
MakeKlamath
MakeKlamath
Model18 ft. Open
Model19 ft. GTCC
Model Year2005
Model Year2008
Measurements / Dimensions
Beam84 in
Beam93 in
Beam - Meters2.13
Beam - Meters2.36
Beam - Inches84
Beam - Inches93
Deadrise8°
Deadrise9℃ at transom
Depth - DetailAt Bow: 45 in. At Midship: 31 in. At Transom: 28 in
Depth - DetailBow: 44 in. Midship: 31 in. Transom: 28.5 in
Depth - Centimeters114.3
Depth - Centimeters111.76
Depth - Inches45
Depth - Inches44
Weight - Detail500 lbs
Weight - Detail750 lbs
Weight - kg226.8
Weight - kg340.19
Weight - lbs.5
Weight - lbs.75
Width [transom] - Detail56 in
Width [transom] - Detailnot available
Height [transom]20 in
Height [transom]20 in
Length - Feet18
Length - Feet18
Length - Inches4
Length - Inches8
Length overall - Detail18 ft. 4 in
Length overall - Detail18 ft. 8 in
Length overall - Meters5.59
Length overall - Meters5.69
Length overall - Inches22
Length overall - Inches224
Body / Hull
Hull thicknessSides: .063 in. Bottom: .090 in
Hull thicknessSides: 0.080 in. Bottom: 0.100 in
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Engine max75 hp
Engine max115 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
Drive typenot available
Drive typeOutboard
Operational Info
Maximum capacity1,735 lbs
Maximum capacity2,000 lbs
Maximum people8
Maximum people7

Klamath 18 ft. Open 2005 vs Klamath 19 ft. GTCC 2008 — Common Questions

Which is the larger boat — the Klamath 18 ft. Open 2005 or the Klamath 19 ft. GTCC 2008?
The Klamath 19 ft. GTCC 2008 is the longer of the two at 18,0 feet overall. The Klamath 18 ft. Open 2005 comes in at 18,0 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Klamath 18 ft. Open 2005 or the Klamath 19 ft. GTCC 2008?
For trailering, the Klamath 18 ft. Open 2005 has the edge at 5 lbs dry weight versus 75 lbs for the Klamath 19 ft. GTCC 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 Klamath 19 ft. GTCC 2008 is rated to a maximum of 115 hp, giving it the larger power ceiling. The Klamath 18 ft. Open 2005 tops out at 75 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 18 ft. Open 2005 is Coast Guard rated for 8 passengers, while the Klamath 19 ft. GTCC 2008 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 Klamath 18 ft. Open 2005 has a better power-to-weight ratio at 0 lbs per hp compared to 1 lbs per hp for the Klamath 19 ft. GTCC 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 Klamath 19 ft. GTCC 2008 measures 93" wide, compared to 84" for the Klamath 18 ft. Open 2005. 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 18 ft. Open 2005 and Klamath 19 ft. GTCC 2008 from the same manufacturer?
Yes — both the Klamath 18 ft. Open 2005 and the Klamath 19 ft. GTCC 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.