The Lagoon 40 2017 vs Lagoon 400 2015 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 — Lagoon 40 2017 at 38,6 ft versus Lagoon 400 2015 at 39,4 ft. Weight tells a clearer story for trailering families: the Lagoon 400 2015 tips the scales at 22 531 lbs — 11 646 lbs less than the Lagoon 40 2017 at 10 885 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 — 29 hp for the Lagoon 40 2017 and 29 hp for the Lagoon 400 2015. 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 — 106 gal and 106 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Lagoon 400 2015 is rated for 12 passengers, while the Lagoon 40 2017 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lagoon 400 2015 could be the deciding factor.

Displacement is where these two sailboats genuinely part ways. The Lagoon 400 2015 displaces 22 531 lbs — a 11 646-lb difference over the Lagoon 40 2017 at 10 885 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 — 4,5 ft and 4,0 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The Lagoon 40 2017 uses fractional_rig_sloop rigging.