The Whittley CW1800 2009 vs Whittley Voyager 580 2007 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department - Whittley CW1800 2009 at 17,0 ft versus Whittley Voyager 580 2007 at 20,0 ft. Weight tells a clearer story for trailering families: the Whittley Voyager 580 2007 tips the scales at 3 180 lbs - 1 636 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 175 hp, the Whittley Voyager 580 2007 has a 40-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.
Both boats are rated for 5 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Whittley Voyager 580 2007 at 20,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Whittley CW1800 2009 at 17,0 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.