The Lagoon 400 S2 2012 vs Lagoon 620 2009 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 Lagoon 620 2009 measures 62,0 feet overall (2009), giving it roughly 22,6 additional feet of deck space compared to the Lagoon 400 S2 2012 at 39,4 feet (2012). Weight tells a clearer story for trailering families: the Lagoon 620 2009 tips the scales at 71 077 lbs — 48 259 lbs less than the Lagoon 400 S2 2012 at 22 818 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 110 hp, the Lagoon 620 2009 has a 81-hp advantage over the Lagoon 400 S2 2012's 29-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Lagoon 620 2009 carries 343 gallons versus 106 gallons in the Lagoon 400 S2 2012. 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 Lagoon 620 2009 is rated for 18 passengers, while the Lagoon 400 S2 2012 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lagoon 620 2009 could be the deciding factor.

Displacement is where these two sailboats genuinely part ways. The Lagoon 620 2009 displaces 71 077 lbs — a 48 259-lb difference over the Lagoon 400 S2 2012 at 22 818 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.

Draft is a practical consideration that many buyers underestimate until they're already at the marina. The Lagoon 620 2009 draws 5,1 ft, compared to 4,0 ft for the Lagoon 400 S2 2012. That 1,1-foot difference affects which anchorages you can access, which haul-out facilities will take you, and how carefully you need to read the tide tables in shallower cruising grounds.

The Lagoon 400 S2 2012 is rigged as a fractional_rig_sloop while the Lagoon 620 2009 carries Fractional Sloop rigging — a meaningful difference in sail handling complexity, upwind performance, and the size of crew you'll need to work the boat comfortably. Helm style differs too: the Lagoon 400 S2 2012 uses a Single helm wheel versus a Twin helm wheels on the Lagoon 620 2009. Wheel helms give better leverage and visibility on larger boats; tillers offer direct feedback and simplicity on smaller ones. For auxiliary power the Lagoon 620 2009 carries a 110-hp engine against 29 hp on the Lagoon 400 S2 2012. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.

For extended cruising, water capacity matters: the Lagoon 620 2009 carries 254 gallons versus 79 gallons on the Lagoon 400 S2 2012 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.