When two boats share the same hull type — in this case both the Achilles FRB-104 2012 and the Achilles KSB-116 2011 are inflatable non rigid designs with inflatable 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 — Achilles FRB-104 2012 at 10,3 ft versus Achilles KSB-116 2011 at 11,5 ft. At 108 lbs and 46 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 Achilles FRB-104 2012 carries a rated maximum of 15 hp. Engine data for the Achilles KSB-116 2011 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Achilles FRB-104 2012 is rated for 4 passengers, while the Achilles KSB-116 2011 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Achilles FRB-104 2012 could be the deciding factor.
Both are inflatable designs, which means they pack down for compact storage, can be carried in a bag, and are dramatically lighter than equivalent rigid hulls. The trade-off is setup time and the need to monitor tube pressure regularly. Tube diameter differs: 17 in. (43 cm) on the Achilles FRB-104 2012 vs 11.2 in. (340 cm) on the Achilles KSB-116 2011 — larger tubes generally mean more buoyancy and a drier, more stable ride.
Bottom line: Choose the Achilles FRB-104 2012 if your priority is putting more people on the water — it handles 4 passengers and at 10,3 ft it has the deck room to back that rating up comfortably. The Achilles KSB-116 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 2 that costs less to run day-to-day.