The Beneteau First 21.7 S 2004 vs Beneteau First 21.7 Swing keel 2004 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 — Beneteau First 21.7 S 2004 at 20,1 ft versus Beneteau First 21.7 Swing keel 2004 at 21,0 ft. At 2 744 lbs and 2 745 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 — 20 hp for the Beneteau First 21.7 S 2004 and 11 hp for the Beneteau First 21.7 Swing keel 2004. 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.
Both boats are rated for 6 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.
Both boats sit in a similar displacement bracket — 2 744 lbs for the Beneteau First 21.7 S 2004 and 2 745 lbs for the Beneteau First 21.7 Swing keel 2004. Comparable displacement means broadly similar seakeeping behaviour and load capacity, though hull form and ballast ratio will still produce noticeably different sailing characteristics.
Both boats draw a similar depth — 6,0 ft and 5,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
For auxiliary power the Beneteau First 21.7 S 2004 carries a 20-hp engine against 11 hp on the Beneteau First 21.7 Swing keel 2004. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
The Beneteau First 21.7 Swing keel 2004 is trailerable — a genuine advantage for sailors who prefer to keep their boat at home or explore multiple sailing venues.
Bottom line: The Beneteau First 21.7 S 2004 and Beneteau First 21.7 Swing keel 2004 are closely matched on paper. A sea trial on both in representative conditions is the only reliable way to find which one suits your sailing style, home port, and intended cruising ground.