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Hull Gauge
Sheet 1550 · recomputed 5 Nov 2026, 03:30 UTC

15 m sailing catamaran by Lagoon · built 2006–2023 (boats seen)

Lagoon
50 used price guide

Gauge Value
Firm · 25+ boats
£663,500€776,500$897,000

Middle half £631,500€731,500$829,000 – £721,500€833,500$957,000

median asking price of 28 boats listed since Dec 2020, in today's prices · asking, not sold

Watch

15.03 mbeam 8.08 mdraft 1.40 mfull specification

A used Lagoon 50 asks a median of £663,500€776,500$897,000 across 28 boats listed since Dec 2020, in today's prices. Half sit between £631,500€731,500$829,000 and £721,500€833,500$957,000, and each year of age takes about 5.3% off.

01

The field

Each number is one boat: its asking price in thousands of pounds, at today's market level, set above the year it was built. The orange line is the model's middle price for its age; the shaded band holds the middle half. Tap a number to see the boat behind it. The price scale is logarithmic: each step up is the same percentage.

28 boats by year built · asking prices in £ thousands, in today's prices · listed since Dec 2020 · asking, not sold · log scale · middle line fitted on 28 boats
28 boats · fill in Your boat below to place yours on the field.
02

Your boat

Estimated from the boats above. No email, no broker call.

Listed in
optional, in pounds
Gauge Estimate · Firm
£691,000€805,500$924,000

Likely range £648,000€755,500$868,000 – £748,500€872,500$1,003,500

27 comparable boats built 2018–2024 · hours not given · all markets · asking, not sold

Add your asking price to see where it sits among boats like yours.

03

By year built

Median from five boats; middle half from ten. Below that we print nothing rather than a guess. Linked years have their own page with that year's boats. The spread is drawn on the field's logarithmic scale, in pounds.

YearBoatsMedianMiddle halfSpread
20234—too few boats
20225£761,500€887,500$1,020,000too few boats
20214—too few boats
20204—too few boats
20196£655,000€763,500$877,500too few boats
20184—too few boats
2007–20170—none listed
20061—too few boats

Across boats built 2006 to 2023, each year of age takes about 5.3% off the asking price.

04

What moves the price

Each factor compares boats of the same age, so a newer boat's premium isn't counted twice. Five boats or more on each side, or we say so.

Age

Each year of age takes about 5.3% off the asking price. This is the biggest single factor.

−5.3%per year of age · fitted on 28 boats
Engine hours

Boats with fewer hours than usual for their age ask about 4.9% less than those with more.

−4.9%Lower hours for age 6 boats · against higher hours 8
Where it's listed

Boats listed in Europe ask about 2.5% more than those in the US, age for age.

+2.5%Listed in Europe 8 boats · against the US 18

Asking prices, not sold. Factors can overlap, so treat these as a guide to what the market asks, not a formula.

05

Time to sell

811days

listed so far: the median of 25 boats seen on two or more dates

43%

have cut their asking price: 10 of 23 boats seen at least 14 days apart

2.4%

median size of that cut, from the highest earlier ask

These are asking prices, and asking is not selling. Days listed so far is not time to sell: a boat still listed has not sold, and we do not yet record when a listing ends. We have not measured how far sale prices land below asking; the methodology says what we can and cannot measure.

06

Cost to keep

A year on a South Coast marina berth, insured at the Gauge Value, in pounds. An estimate from published rates, not a quote.

Depreciation£34,8505.3% a year of age on the fitted curve, at the Gauge Value
Berthing—not estimated: no cited berthing figure for that region for a boat of 15 m or more
Maintenance and repairs£23,2002% to 5% of a value of £663,500 a year (maintenance, newer boats) · Boatsetter
Lift-out and antifoul£70015.0 m at the cited rate per metre (Lake Yard: lift, hold, pressure wash, relaunch, plus antifoul labour) · Lake Yard price list 2026
Insurance£6,6500.5% to 1.5% of a value of £663,500 a year · Velos Insurance; Admiral Yacht Insurance
Engine servicing—not estimated: labour rates are cited, but no source publishes the hours a service takes
A year of ownership£65,400 £5,450 a month

Fuel is not included: no cited source gives the engine hours a typical owner runs in a year.

08

Questions about the Lagoon 50

How much is a used Lagoon 50 worth?

The median asking price is £663,500, from 28 boats listed since Dec 2020, in today's prices; half sit between £631,500 and £721,500. Each year of age takes about 5.3% off. For a specific boat, use Your boat above.

How long does a Lagoon 50 stay on the market?

We do not measure time to sell yet. Across 25 boats seen on two or more dates, the median time between first and last sighting is 811 days so far. 43% of 23 boats seen at least 14 days apart have cut their asking price, by a median of 2.4%.

How fast does a Lagoon 50 lose value?

About 5.3% of its asking price for each year of age, fitted on 28 boats built 2006 to 2023. On a boat at the median that is about £34,850 a year.

Are these sold prices?

No. They are asking prices observed on public listings, restated at today's market level. We have not yet measured how far sale prices land below asking, so we do not publish a figure for it.

09

About the Lagoon 50

The boats behind this page were built between 2006 and 2023 and have been listed since Dec 2020, most often in the US market. 43% of the boats seen at least 14 days apart have cut their asking price.

How we measure: we read public listings from brokers and marketplaces, count a boat once when it appears on several sites, store its asking price each time it changes, and restate older asking prices at today's market level. We never republish a listing, a photograph or a seller. Every figure is recomputed nightly and dated; below five boats we publish nothing. The 28 boats here were listed in Europe and the US. Full methodology

Length overall
15.03 mfrom listings · 22 boats
Beam
8.08 mfrom listings · 20 boats
Draft
1.40 mfrom listings · 15 boats
Built
2006–2023from listings · 28 boats
Type
Sailing catamaranour classification