Matching a inflatable non rigid Achilles FRB-104 2013 against a inflatable rigid Achilles HB-385DX 2013 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 — Achilles FRB-104 2013 at 10,3 ft versus Achilles HB-385DX 2013 at 12,7 ft. Weight tells a clearer story for trailering families: the Achilles HB-385DX 2013 tips the scales at 243 lbs — 135 lbs less than the Achilles FRB-104 2013 at 108 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.
Both boats share a closely matched power ceiling — 15 hp for the Achilles FRB-104 2013 and 30 hp for the Achilles HB-385DX 2013. 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 Achilles HB-385DX 2013 is rated for 7 passengers, while the Achilles FRB-104 2013 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Achilles HB-385DX 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Achilles FRB-104 2013 comes in at 7 lbs per hp versus 8 lbs per hp for the Achilles HB-385DX 2013. 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.
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 2013 vs 18 in. (45 cm) on the Achilles HB-385DX 2013 — larger tubes generally mean more buoyancy and a drier, more stable ride.
Bottom line: Choose the Achilles HB-385DX 2013 if your priority is putting more people on the water — it handles 7 passengers and at 12,7 ft it has the deck room to back that rating up comfortably. The Achilles FRB-104 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.