Lagoon 400 2015 boat specs
Lagoon
Lagoon 400 2015
2015
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VS
Lagoon 400 S2 2012 boat specs
Lagoon
Lagoon 400 S2 2012
2012
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Lagoon 400 2015 vs Lagoon 400 S2 2012 — Same Brand, Different Boat

The Lagoon 400 2015 vs Lagoon 400 S2 2012 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 400 2015 at 39,4 ft versus Lagoon 400 S2 2012 at 39,4 ft. Weight tells a clearer story for trailering families: the Lagoon 400 S2 2012 tips the scales at 22 818 lbs — 287 lbs less than the Lagoon 400 2015 at 22 531 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 400 2015 and 29 hp for the Lagoon 400 S2 2012. 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.

Both boats are rated for 12 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Both boats sit in a similar displacement bracket — 22 531 lbs for the Lagoon 400 2015 and 22 818 lbs for the Lagoon 400 S2 2012. 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 4,0 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The Lagoon 400 2015 uses fractional_rig_sloop rigging.

Bottom line: The Lagoon 400 2015 and Lagoon 400 S2 2012 are closely matched on paper. A sea trial on both in representative conditions is the only reliable way to find which one suits your sailing style, home port, and intended cruising ground.
Measurements / Dimensions
Length overall - Detail39.40 ft
Length overall - Detail39.40 ft
Length - Feet39.4
Length - Feet39.4
Length overall - Meters12.01
Length overall - Meters12.01
Length overall - Inches473
Length overall - Inches473
Beam23.10 ft
Beam23.10 ft
Beam - Meters7.04
Beam - Meters7.04
Beam - Inches277
Beam - Inches277
Draft [max] - Detail4.00 ft
Draft [max] - Detail4.00 ft
Draft [max] - Meters1.22
Draft [max] - Meters1.22
Draft [max] - Inches48
Draft [max] - Inches48
Displacement22531.00 lbs
Displacement22818.00 lbs
Body / Hull
RudderTwin spade rudders
RudderTwin spade rudders
HelmSingle helm wheel
HelmSingle helm wheel
Engine and Drivetrain
Fuel tank capacity - Gal105.7
Fuel tank capacity - Gal105.7
Fuel tank capacity - Liters400.12
Fuel tank capacity - Liters400.12
Horsepower29 hp
Horsepower29 hp
Fuel typeDiesel
Fuel typeDiesel
Drive typeinboard
Drive typeinboard
Engine 2 Horsepower29 hp
Engine 2 Horsepower29 hp
Engine 2 Fuel TypeDiesel
Engine 2 Fuel TypeDiesel
Engine 2 Drive Typeinboard
Engine 2 Drive Typeinboard
Operational Info
Sleeping capacity12
Sleeping capacity12
Cabins4
Cabins4
Head4
Head4
Water capacity79.3
Water capacity79.3
Riggingfractional_rig_sloop
Riggingfractional_rig_sloop
Mast ConfigurationDeck stepped mast
Mast ConfigurationDeck stepped mast
Boat typeSail
Boat typeSail

Lagoon 400 2015 vs Lagoon 400 S2 2012 — Common Questions

Which is the larger boat — the Lagoon 400 2015 or the Lagoon 400 S2 2012?
The Lagoon 400 S2 2012 is the longer of the two at 39,4 feet overall. The Lagoon 400 2015 comes in at 39,4 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Lagoon 400 2015 or the Lagoon 400 S2 2012?
For trailering, the Lagoon 400 2015 has the edge at 22 531 lbs dry weight versus 22 818 lbs for the Lagoon 400 S2 2012. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
How many people can each boat hold?
The Lagoon 400 2015 is Coast Guard rated for 12 passengers, while the Lagoon 400 S2 2012 is certified for 12. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat has the deeper draft — the Lagoon 400 2015 or the Lagoon 400 S2 2012?
The Lagoon 400 S2 2012 has the deeper draft at 4,0 ft, versus 4,0 ft for the Lagoon 400 2015. A deeper draft generally means better upwind performance and stability, but limits access to shallow anchorages and some marina berths. Always check the controlling depth of your home port and favourite cruising grounds before committing.
Is the Lagoon 400 2015 or the Lagoon 400 S2 2012 better suited for offshore sailing?
For offshore work, displacement and construction are the primary indicators. The Lagoon 400 S2 2012 at 22 818 lbs displacement is the heavier, more load-carrying design — generally better suited to extended passages where seakeeping and provisioning capacity matter most. The Lagoon 400 2015 at 22 531 lbs will typically be livelier and more responsive in lighter conditions.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Lagoon 400 2015 and Lagoon 400 S2 2012 share an 23.10 ft beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
How do the fuel tanks compare on the Lagoon 400 2015 and Lagoon 400 S2 2012?
Both boats carry similar fuel loads — 106 gallons and 106 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Lagoon 400 2015 and Lagoon 400 S2 2012 from the same manufacturer?
Yes — both the Lagoon 400 2015 and the Lagoon 400 S2 2012 are built by Lagoon. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.