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Hull Gauge
Sheet 2255 · recomputed 5 Nov 2026, 03:30 UTC

11.9 m motor boat by Sea Ray · built 1984–2005 (boats seen)

Sea Ray
390 Express Cruiser used price guide

Gauge Value
Firm · 25+ boats
£28,500€33,000$37,000

Middle half £23,000€26,500$29,000 – £35,500€41,500$47,000

median asking price of 60 boats listed since Sep 2020, in today's prices · asking, not sold

Watch

11.89 mbeam 4.24 mdraft 0.71 mfull specification

A used Sea Ray 390 Express Cruiser asks a median of £28,500€33,000$37,000 across 60 boats listed since Sep 2020, in today's prices. Half sit between £23,000€26,500$29,000 and £35,500€41,500$47,000, and each year of age takes about 7.8% 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.

58 boats by year built · asking prices in £ thousands, in today's prices · listed since Sep 2020 · asking, not sold · log scale · middle line fitted on 58 boats
58 boats · fill in Your boat below to place yours on the field. 2 boats without a build year are not drawn.
02

Your boat

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

Listed in
optional, in pounds
Gauge Estimate · Firm
£29,000€34,000$36,500

Likely range £23,000€26,500$28,500 – £35,500€41,500$47,000

56 comparable boats built 1985–1991 · hours not given · all markets · asking, not sold

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

The 1988 page: every 1988 boat and its estimate
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
20051—too few boats
1992–20040—none listed
19914—too few boats
19908£35,000€41,000$45,500too few boats
198910£32,000€37,500$41,500£26,500€31,500$35,000 – £36,500€43,000$49,000
198813£25,000€30,000$31,500£23,000€26,000$28,000 – £29,000€34,000$34,500
19875£28,000€33,000$38,500too few boats
198610£30,500€35,500$39,000£23,000€27,000$28,000 – £36,000€41,500$46,000
19856£18,500€21,500$24,000too few boats
19841—too few boats

Across boats built 1984 to 2005, each year of age takes about 7.8% 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 7.8% off the asking price.

−7.8%per year of age · fitted on 58 boats
Diesel or petrol

Diesel boats ask about 8.1% more than petrol ones, age for age.

+8.1%Diesel 7 boats · against petrol 45
Engine hours

Boats with fewer hours than usual for their age ask about 1.7% more than those with more.

+1.7%Lower hours for age 18 boats · against higher hours 17

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

75days

listed so far: the median of 27 boats seen on two or more dates

40%

have cut their asking price: 8 of 20 boats seen at least 14 days apart

9.5%

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£2,2007.8% a year of age on the fitted curve, at the Gauge Value
Berthing£5,750annual band for the region, Lake Yard marina berth, 10-12 m; Marina berth, South Coast · Lake Yard price list 2026 · BerthFinder
Maintenance and repairs£2,1505% to 10% of a value of £28,500 a year (maintenance, older boats) · Boatsetter
Lift-out and antifoul£55011.9 m at the cited rate per metre (Lake Yard: lift, hold, pressure wash, relaunch, plus antifoul labour) · Lake Yard price list 2026
Insurance£3000.5% to 1.5% of a value of £28,500 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£10,950 £910 a month

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

08

Questions about the Sea Ray 390 Express Cruiser

How much is a used Sea Ray 390 Express Cruiser worth?

The median asking price is £28,500, from 60 boats listed since Sep 2020, in today's prices; half sit between £23,000 and £35,500. Each year of age takes about 7.8% off. For a specific boat, use Your boat above.

How long does a Sea Ray 390 Express Cruiser stay on the market?

We do not measure time to sell yet. Across 27 boats seen on two or more dates, the median time between first and last sighting is 75 days so far. 40% of 20 boats seen at least 14 days apart have cut their asking price, by a median of 9.5%.

How fast does a Sea Ray 390 Express Cruiser lose value?

About 7.8% of its asking price for each year of age, fitted on 58 boats built 1984 to 2005. On a boat at the median that is about £2,200 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 Sea Ray 390 Express Cruiser

The boats behind this page were built between 1984 and 2005 and have been listed since Sep 2020, most often in the US market. 40% 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 60 boats here were listed in the US. Full methodology

Length overall
11.89 mfrom listings · 55 boats
Beam
4.24 mfrom listings · 52 boats
Draft
0.71 mfrom listings · 33 boats
Built
1984–2005from listings · 58 boats
Type
Motor boatour classification