When two boats share the same hull type — in this case both the Achilles LSI-230 2011 and the Achilles LSI-335 2010 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?
Size is the most obvious dividing line here. The Achilles LSI-335 2010 measures 11,0 feet overall (2010), giving it roughly 3,4 additional feet of deck space compared to the Achilles LSI-230 2011 at 7,6 feet (2011). At 52 lbs and 91 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 — 4 hp for the Achilles LSI-230 2011 and 15 hp for the Achilles LSI-335 2010. 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 LSI-335 2010 is rated for 5 passengers, while the Achilles LSI-230 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 LSI-335 2010 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Achilles LSI-335 2010 comes in at 6 lbs per hp versus 13 lbs per hp for the Achilles LSI-230 2011. 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.
The Achilles LSI-230 2011 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Achilles LSI-335 2010 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Achilles LSI-335 2010 if your priority is putting more people on the water — it handles 5 passengers and at 11,0 ft it has the deck room to back that rating up comfortably. The Achilles LSI-230 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.