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Hull Gauge
Recomputed 5 Nov 2026, 03:30 UTC

Builder

Seamaster prices and resale values

A used Seamaster asks a median of £13,500 across 19 boats observed. We need 20 boats across six build years of the same models before we say how fast the range loses value.

Median asking price of 19 boats listed since Sep 2020, in today's prices · Indicative · asking, not sold

Loses a year, across the range

Not enough boats yet

We rate a range once 20 boats across six build years of the same models have been seen. We have 19 Seamaster motor boats across 14 build years so far.

Nearest figure: motor boats from other builders lose 5.9% a year of age.** A stand-in for the type, not Seamaster's own figure.

Published models
3 + 2 awaiting data
Boats observed
19
01

The range

Every model by the build years of the boats we have seen, grouped by range. The figure is the median asking price. Dashed models have too few boats to publish yet.

Other models Motor boats · 5 models

Bars: build years of the boats we have seen (the middle 90%), not production runspublished · median asking pricefewer than five boats, not publishedno recorded end (or start) year: the bar stops at the newest (or oldest) boat seen
02

Which hold value best

Share of asking price lost for each year of age. Shorter is better. The tick marks the same type of boat from other builders. Models need 20 boats across six build years, and a consistent fit, to be ranked.

No Seamaster model has 20 boats across six build years yet, so none can be ranked. None has 10 boats yet.

03

Against other builders

The five builders whose boats most overlap with Seamaster's by type and length, on the same basis.

BuilderModelsBoatsMedian askingLoses a year
Sailfish13118£107,500 Firm5.3%
Blackfin13116£119,500 Firm5.3%
Sea Hunt12121£105,000 Firm6.2%
Rinker18165£27,500 Firm6.6%
Sportsman14110£119,500 Firm7.8%
Seamaster319£13,500 Indicative— not enough boats across six build years to rate
04

Every model

Sort by any column. Medians are asking prices, not sold prices. Models with fewer than five boats are listed with their count but no figure yet. Built is the span of build years among the boats we have seen.

Every Seamaster model we have observed
Seamaster 813Power8.1 m1972–19867£10,500 Provisional—
Seamaster 27Power8.2 m1970–20076£14,000 Provisional—
Seamaster 30Power9.1 m1972–19846£19,500 Provisional—
Seamaster 23Power7.0 m1972–19763awaiting data—
Seamaster 820Power8.0 m19901awaiting data—
05

Questions about Seamaster prices

How much does a used Seamaster cost?

A used Seamaster asks a median of £13,500 across 19 boats listed since Sep 2020, in today's prices. The middle half ask between £9,000 and £17,000. These are asking prices, not sold prices.

Does a Seamaster hold its value?

We don't publish a rate for Seamaster yet. We rate a range once 20 boats across six build years of the same models have been seen. We have 19 Seamaster motor boats across 14 build years so far. Motor boats from other builders lose about 5.9% a year of age; that is the nearest figure we publish, not Seamaster's own.

Why is a Seamaster model missing a price?

We publish a model once five boats have been listed. 2 models are listed above with their count so far, including the Seamaster 23 and the Seamaster 820, and will get a published figure when they reach five.