When two boats share the same hull type — in this case both the Achilles 156SB-3T 2010 and the Achilles SU-14 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?
On paper these two are close siblings in the size department — Achilles 156SB-3T 2010 at 15,5 ft versus Achilles SU-14 2010 at 14,0 ft. Weight tells a clearer story for trailering families: the Achilles 156SB-3T 2010 tips the scales at 207 lbs — 179 lbs more than the Achilles SU-14 2010 at 28 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.
The Achilles SU-14 2010 tops out at 55 hp. Engine specs for the Achilles 156SB-3T 2010 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Achilles 156SB-3T 2010 is rated for 12 passengers, while the Achilles SU-14 2010 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Achilles 156SB-3T 2010 could be the deciding factor.
Bottom line: Choose the Achilles 156SB-3T 2010 if your priority is putting more people on the water — it handles 12 passengers and at 15,5 ft it has the deck room to back that rating up comfortably. The Achilles SU-14 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.