When two boats share the same hull type — in this case both the Berkshire Pontoons 240 CL BP3 - STS 2011 and the Berkshire Pontoons 261 XB BP3 - STS 2011 are pontoon 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 — Berkshire Pontoons 240 CL BP3 - STS 2011 at 24,8 ft versus Berkshire Pontoons 261 XB BP3 - STS 2011 at 26,8 ft. Weight tells a clearer story for trailering families: the Berkshire Pontoons 261 XB BP3 - STS 2011 tips the scales at 2 875 lbs — 2 849 lbs less than the Berkshire Pontoons 240 CL BP3 - STS 2011 at 26 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 power gap is worth calling out. Rated to 300 hp, the Berkshire Pontoons 261 XB BP3 - STS 2011 has a 50-hp advantage over the Berkshire Pontoons 240 CL BP3 - STS 2011's 250-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Berkshire Pontoons 261 XB BP3 - STS 2011 is rated for 16 passengers, while the Berkshire Pontoons 240 CL BP3 - STS 2011 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Berkshire Pontoons 261 XB BP3 - STS 2011 could be the deciding factor.
One place where both boats are genuinely identical is tube construction: both run 3 aluminum tubes at 25" diameter. That shared spec means stability and buoyancy characteristics are closely matched — the ride difference you'll feel between them comes primarily from deck length, weight distribution, and motor choice.
Bottom line: Choose the Berkshire Pontoons 261 XB BP3 - STS 2011 if your priority is putting more people on the water — it handles 16 passengers and at 26,8 ft it has the deck room to back that rating up comfortably. The Berkshire Pontoons 240 CL BP3 - STS 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.