The Beneteau First 21.7 S 2004 vs Beneteau First 34.7 2005 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.

Both boats share a closely matched power ceiling — 20 hp for the Beneteau First 21.7 S 2004 and 21 hp for the Beneteau First 34.7 2005. 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. Fuel capacity breaks the other way: the Beneteau First 34.7 2005 carries 20 gallons versus 8 gallons in the Beneteau First 21.7 S 2004. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Beneteau First 34.7 2005 is rated for 10 passengers, while the Beneteau First 21.7 S 2004 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau First 34.7 2005 could be the deciding factor.

The Beneteau First 21.7 S 2004 has a documented displacement of 2 744 lbs. Displacement data wasn't available for the other boat in this comparison.

Both boats draw a similar depth — 6,0 ft and 6,7 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

Sailboat comparisons often come down to details that specs don't fully capture — the quality of the standing rigging, the layout of the cockpit, and how the boat feels on a beat in 20 knots. A sea trial on both is strongly recommended.

For extended cruising, water capacity matters: the Beneteau First 34.7 2005 carries 26 gallons versus 11 gallons on the Beneteau First 21.7 S 2004 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.