When two boats share the same hull type — in this case both the Klamath 15 ADW 2011 and the Klamath Double Jac 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 — Klamath 15 ADW 2011 at 15,2 ft versus Klamath Double Jac 2008 at 16,0 ft. At 435 lbs and 495 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.
Both boats share a closely matched power ceiling — 45 hp for the Klamath 15 ADW 2011 and 40 hp for the Klamath Double Jac 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.
For family outings this is probably the sharpest distinction between the two. The Klamath Double Jac 2008 is rated for 7 passengers, while the Klamath 15 ADW 2011 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Klamath Double Jac 2008 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Klamath 15 ADW 2011 comes in at 10 lbs per hp versus 12 lbs per hp for the Klamath Double Jac 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 Double Jac 2008 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 Klamath 15 ADW 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.