The Beneteau First 21.7 S 2004 vs Beneteau R/C 30 1977 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.

Size is the most obvious dividing line here. The Beneteau R/C 30 1977 measures 29,5 feet overall (1977), giving it roughly 9,4 additional feet of deck space compared to the Beneteau First 21.7 S 2004 at 20,1 feet (2004). Weight tells a clearer story for trailering families: the Beneteau R/C 30 1977 tips the scales at 8 995 lbs — 6 251 lbs less than the Beneteau First 21.7 S 2004 at 2 744 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.

Both boats share a closely matched power ceiling — 20 hp for the Beneteau First 21.7 S 2004 and 15 hp for the Beneteau R/C 30 1977. 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 carry nearly identical fuel loads — 8 gal and 8 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Beneteau R/C 30 1977 is rated for 8 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 R/C 30 1977 could be the deciding factor.

Displacement is where these two sailboats genuinely part ways. The Beneteau R/C 30 1977 displaces 8 995 lbs — a 6 251-lb difference over the Beneteau First 21.7 S 2004 at 2 744 lbs. That gap separates two entirely different categories of sailing: the heavier boat is built for offshore passage-making and load-carrying, while the lighter hull rewards performance sailing and easier handling in lighter air.

Both boats draw a similar depth — 6,0 ft and 5,8 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 R/C 30 1977 carries 24 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.