The Lagoon 39 2013 vs Lagoon 42 2022 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 42 2022 measures 42,0 feet overall (2022), giving it roughly 3,4 additional feet of deck space compared to the Lagoon 39 2013 at 38,6 feet (2013). Weight tells a clearer story for trailering families: the Lagoon 42 2022 tips the scales at 26 681 lbs - 946 lbs less than the Lagoon 39 2013 at 25 735 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 39 2013 and 45 hp for the Lagoon 42 2022. 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 Lagoon 39 2013 carries 106 gallons versus 79 gallons in the Lagoon 42 2022. 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 42 2022 is rated for 12 passengers, while the Lagoon 39 2013 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lagoon 42 2022 could be the deciding factor.
Both boats sit in a similar displacement bracket - 25 735 lbs for the Lagoon 39 2013 and 26 681 lbs for the Lagoon 42 2022. 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 - 4,0 ft and 4,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Lagoon 39 2013 uses fractional_rig_sloop rigging. For auxiliary power the Lagoon 42 2022 carries a 45-hp engine against 29 hp on the Lagoon 39 2013. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.
Bottom line: The Lagoon 42 2022 at 42,0 ft offers more living space, greater range, and a more substantial offshore capability. The Lagoon 39 2013 at 38,6 ft is the easier, lower-cost option - simpler to crew and a strong choice for coastal and day sailing.