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Hull Gauge
Recomputed 5 Nov 2026, 03:30 UTC

Island Packet 38vsJ/Boats J/40

Island Packet against J/Boats · used asking prices, listed in the US

At the same age, the J/Boats J/40 asks 20% less than the Island Packet 38; on the headline Gauge Values it asks 13% less, which compares the whole fleets rather than boats of the same age. We can't yet say which holds its value better: the J/Boats J/40 has no published depreciation curve.

same age · 4 shared build years · 12 and 9 boats in them · Indicative · in today’s prices · asking, not sold

02

Year by year

Each build year's Gauge Estimate, for the 4 years both have boats in. Pooled across those years (12 and 9 boats), the J/Boats J/40 asks 20% less than the Island Packet 38.

Island Packet 38Year builtJ/Boats J/40
£91,000 (11)
1993—
—
£78,500 (24)
1989−27%
£57,500 (8)
1988−27%
£57,000 (8)
£72,000 (21)
1987−22%
£56,500 (8)
Gauge Estimate by year built · comparable boats in brackets, built within three years either side · — below eight comparable boats; a year where neither has eight is left out · the gap is the right-hand model against the left
03

What your budget buys

£27.5k£82.5k£137.5k
Island Packet 38
1987
newest build year whose Gauge Estimate is at or under £72,500 (£72,000, 21 comparable boats)
0
of the 4 boats listed now ask £72,500 or less
J/Boats J/40
1989
newest build year whose Gauge Estimate is at or under £72,500 (£57,500, 8 comparable boats)
7
of the 11 boats we observed were asking £72,500 or less, in today's prices (none listed now)

At £72,500 your money buys 2 years newer in the J/Boats J/40: a 1989 against a 1987.

04

A year of ownership

Each at its Gauge Value, on a South Coast marina berth, 44 engine hours a year (the median of 103 UK-listed sailing boats that report hours). An estimate in pounds from published rates, not a quote.

Island Packet 38MeasureJ/Boats J/40
£4,400
Depreciation (not in total)
withheld
£5,750
Berth
£6,900
£5,900
Maintenance
£5,100
£550
Lift-out and antifoul
£600
£800
Insurance
£700
£500
Fuel
£500
£13,500
Total a year, before depreciation
£13,800

Each line is the middle of the cited range, to the nearest fifty pounds. Depreciation is a year of age on each model's published curve, at its Gauge Value, and stays out of the totals.

The J/Boats J/40 has no published depreciation curve, so its depreciation is withheld.

The totals differ by less than the two berth bands do, so neither is marked cheaper to keep.

Sources: Lake Yard price list 2026 · BerthFinder · Boatsetter · Velos Insurance; Admiral Yacht Insurance · Boating Magazine, "Calculating Boat Fuel Consumption" · Littlehampton Marina fuel prices

05

Specification

Island Packet 38MeasureJ/Boats J/40
1986–1993
Years built
—
11.73 m
Length overall
12.19 m
Sail
Type
Sail
“from listings” marks figures read from the listings themselves; unmarked figures are from our model register and not yet checked against a builder’s published source.
06

Questions

Which is cheaper, the Island Packet 38 or the J/Boats J/40?

At the same age the J/Boats J/40 is cheaper: the J/Boats J/40 asks 20% less than the Island Packet 38 across 4 shared build years. Their Gauge Values, the median asking prices of all the boats we observed whatever their age, are £78,500 and £68,000.

Which holds its value better?

We can't say yet. The Island Packet 38 loses about 5.6% of its asking price a year of age, but the J/Boats J/40 has no published depreciation curve: we fit one from at least 20 boats across six build years and publish it only when the fit holds. We have 11 J/Boats J/40 boats across 6 build years.

Which spends less time on the market?

Boats of the Island Packet 38 had been listed a median of 148 days when we last saw them; too few J/Boats J/40 boats were seen on two dates to say. That is time listed so far, not time to sell, which we don't measure yet. 17% of the Island Packet 38 boats we saw 14 or more days apart cut their asking price; too few J/Boats J/40 boats were seen that far apart to say.

How do you compare them like for like?

We compare boats of the same build year. For each of the 4 years both models have boats in, we take the ratio of their median asking prices in today's prices, then pool the years, giving more weight to years with more boats on both sides. The figure is Indicative because the thinner side has 9 boats in those years. The Gauge Values compare the whole fleets instead, so they mix boats of different ages.

Other comparisons

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