Moody 31 Mk I Buyer's Guide
The Moody 31 Mk I has earned a devoted following among British coastal cruising families, and for good reason — it represents a high point of early-1980s British production boatbuilding, where a yard with genuine offshore pedigree applied thick hull laminates, solid teak joinery, and careful design to a genuinely practical thirty-footer. Bill Dixon's brief was to deliver a boat that could sleep a family, handle the tidal waters of Northern Europe, and require minimal structural maintenance over decades of hard use. Largely, he succeeded. Shopping for one today means finding a mature design with real cruising credentials and a healthy support community, but also a boat that has had decades to accumulate deferred maintenance, ageing systems, and the particular quirks of its era. Going in with clear eyes pays dividends.
Layouts on the Used Market
The Moody 31 Mk I came with a notably generous interior for its waterline length, and the used market reflects the different ways owners configured that space. The more common arrangement on the brokerage market is the three-cabin layout — forward V-berth, a saloon with settee berths, and a dedicated aft cabin — giving the boat a genuine claim to sleeping six in something other than misery. Both the fin-keel and the twin bilge-keel variants appear on the used market, and the choice matters considerably depending on where you intend to sail. Bilge-keel boats draw substantially less and can sit upright when drying out, which made them the popular choice in the tidal creeks and drying harbours of the UK's south and east coasts. Fin-keel boats track better offshore and have a slight edge in upwind performance. Both configurations are worth considering on their merits rather than dismissing one out of hand.
Equipment and Common Upgrades
By the time a Moody 31 Mk I reaches today's market, it has typically been updated considerably from its original fit-out. Autopilot, chartplotter, and some form of cabin heating are commonly fitted — the British coastal environment that spawned this boat makes a reliable pilot and a warm cabin nearly essential, and most owners have attended to both. Solar panels appear frequently, often as a later addition when owners found themselves spending more time on the hook. Spinnaker gear comes up regularly, reflecting the Moody 31's capable downwind character when properly canvassed.
Among the upgrades that represent genuine owner investment, a dodger and bimini combination is a worthwhile find — those original Moody cockpits are comfortable but exposure on a grey English Channel passage benefits from shelter. Radar, an inverter, and a life raft are sometimes present and add measurable value to a passage-ready package. Hot water systems appear on a portion of boats and are a meaningful liveability upgrade. Electric winches are a less common but occasional owner addition on boats that have been cruised hard by aging crews. Asymmetric spinnaker gear appears on some boats, reflecting a shift in downwind sailing fashion among long-term owners. A swim platform, when fitted, is typically a later addition not original to the design.
What to Inspect
The Moody 31 Mk I's hull laminates were built with notable thickness for the era, and structural osmotic blistering is relatively uncommon but not unknown in older fiberglass hulls of this type — budget for a full hull survey with moisture meter readings regardless of appearance above the waterline. Pay particular attention to the keel-to-hull joint, a chronic vulnerability on fin-keel boats of this generation: examine the joint carefully for cracking, weeping, or signs of movement. On bilge-keel examples, inspect each keel plate and its associated reinforcement carefully, as the twin-keel configuration puts asymmetric loads on the hull during grounding and drying out.
The teak interior joinery is a selling point of the Moody 31, but teak trim and joinery can mask moisture ingress at deck fittings, hatches, and chainplates — probe beneath trim pieces, check the area around the chain plates carefully, and open every locker to check for damp. Deck hardware of this vintage frequently has compromised bedding after decades of use; water finding its way past deck fittings into the cored deck sections is a common finding on boats of this age. The skeg-hung rudder is a reassuring arrangement, but inspect the skeg-to-hull joint and the rudder bearings for play and wear.
The engine installation — typically a Volvo Penta diesel in either the smaller or larger configuration — is generally robust, but raw-water cooling circuits, heat exchangers, and exhaust systems deserve careful inspection on any example of this age. Saildrives, where fitted, require attention to the bellows seals, which have a finite service life and are a critical underwater component. Running rigging ages regardless of how little a boat is used; standing rigging on a boat that has not been refit deserves scepticism at this age, particularly the chainplates and any swaged fittings.
Availability and Buyer's Takeaway
The Moody 31 Mk I is primarily a British boat, and the United Kingdom remains the most productive hunting ground for examples, with France and Scandinavia producing a further scatter of listings. These boats rarely stray far from their Northern European origins, and a buyer in North America will find the pool thin and likely face significant import logistics. Within the UK and near-continent, however, the model is genuinely widely available and the community of owners willing to share knowledge is an asset in itself.
When viewing any example, work through this checklist before committing:
- Full professional survey with moisture meter readings across the hull and deck
- Keel-to-hull joint inspection — cracking, movement, or discoloration
- Bilge-keel variant: individual keel attachments and hull reinforcement under each keel
- Chainplate condition and backing plates — remove trim to inspect properly
- Deck hardware bedding — probe for soft deck sections around fittings
- Skeg-rudder joint and rudder bearing play
- Engine raw-water circuit, heat exchanger, and exhaust inspection
- Saildrive bellows condition, where applicable
- Standing rigging age and chainplate integrity
- Teak joinery for moisture concealment — check behind trim and in lockers
- Interior cushions, upholstery, and headliner for mold or persistent damp
Price & volume trends
Monthly asking-price and listing-volume trends for the Moody 31 Mk I. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 11 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Apr 25 | 1 | $ 38,037 | — |
| Aug 25 | 1 | $ 18,380 | -51.7% |
| Sep 25 | 4 | $ 26,626 | +44.9% |
| Oct 25 | 2 | $ 25,992 | -2.4% |
| Nov 25 | 2 | $ 18,564 | -28.6% |
| Jan 26 | 1 | $ 28,538 | +53.7% |
| Feb 26 | 2 | $ 23,987 | -15.9% |
| Mar 26 | 1 | $ 34,634 | +44.4% |
| Apr 26 | 11 | $ 26,686 | -22.9% |
| May 26 | 4 | $ 31,327 | +17.4% |
| Jun 26 | 2 | $ 33,329 | +6.4% |
Where they're listed
Moody 31 Mk I listings appear across 3 countries. United Kingdom has the most listings with 27 (90.0%), followed by France and Norway.
Country view
30 listings · 3 countries| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United Kingdom | $ 26,686 | 27 | 6 | 90.0% |
| France | $ 28,496 | 2 | 0 | 6.7% |
| Norway | $ 18,380 | 1 | 0 | 3.3% |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
10 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Moody 31 Mk II | 30.75' | $ 33,299 | 40 | 6 |
| Moody 31 Mk IYou are here | — | $ 26,686 | 30 | 6 |
| Moody S31 | 31.76' | $ 44,043 | 27 | 13 |
| Moody 27 | 27.67' | $ 14,681 | 25 | 8 |
| Moody 30 | 30' | $ 17,516 | 24 | 6 |
| Moody 34 | 33.42' | $ 42,641 | 21 | 3 |
| Moody 37 | 37' | $ 66,665 | 19 | 3 |
| CAL 31 | 31.5' | $ 10,500 | 18 | 9 |
| Rustler 31 | 31.42' | $ 17,350 | 15 | 5 |
| Moody 33 Mk I | 33' | $ 20,487 | 13 | 4 |
