Both the Whittley CW1800 2009 and the Whittley SL2400 2009 are modified-V designs, both built in fibreglass, so 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 Whittley SL2400 2009 measures 24,0 feet overall (2009), giving it roughly 7,0 additional feet of deck space compared to the Whittley CW1800 2009 at 17,0 feet (2009). Weight tells a clearer story for trailering families: the Whittley SL2400 2009 tips the scales at 2 866 lbs - 1 322 lbs less than the Whittley CW1800 2009 at 1 544 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 250 hp, the Whittley SL2400 2009 has a 115-hp advantage over the Whittley CW1800 2009's 135-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 Whittley SL2400 2009 is rated for 7 passengers, while the Whittley CW1800 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Whittley SL2400 2009 could be the deciding factor.
Bottom line: Choose the Whittley SL2400 2009 if your priority is putting more people on the water - it handles 7 passengers and at 24,0 ft it has the deck room to back that rating up comfortably. The Whittley CW1800 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.