Cornish Crabbers 24 Mk I Buyer's Guide
The Cornish Crabber 24 Mk I is one of the most recognisable traditional-styled cruisers on the British secondhand market — a gaff-rigged cutter with genuine character and a surprisingly devoted following. Designed by Roger Dongray and first built in 1973, originally in marine ply before production shifted to GRP-hulled versions, the Mk I represents the earliest chapter of a lineage that is still built today in updated form. Buying one puts you into a small but well-organised owner community and a boat that rewards patience with the rig, but prospective buyers should understand clearly what they are looking at: a modest, lightly built cruiser offering sitting headroom only, centreplate shallow-water access, and an honest simplicity that is either its greatest charm or a deal-breaker, depending on your expectations. The key preliminary check is distinguishing a genuine Mk I from a Mk II — both share the same hull moulding, but the Mk I has an almost flush, partly ply deck and cockpit, while the Mk II moved to a slightly higher coachroof and all-GRP construction with greater ballast. The post-1993 boats are an entirely different, longer hull and should not be confused with either early mark.
Layouts on the Used Market
The accommodation plan on Mk I examples is essentially fixed, the hull offering little scope for variation. Forward of the companionway you will find a forepeak containing two berths with a marine WC fitted between them — a compact but workable arrangement that doubles as a changing space. The main saloon places a table on the centreboard case, with a berth running down either side, and a small galley tucked to starboard. There is no standing headroom; the boat is intended to be sailed, not lived aboard in port, and buyers who accept that find the layout honest and adequate for a coastal cruising couple. Some boats appear with minor owner-led changes to the galley fitout or berth cushions, but the structural layout is consistent across the mark.
Equipment and Common Upgrades
The secondhand pool of Mk I Crabbers is almost entirely concentrated in the United Kingdom, and examples have typically been maintained by hands-on owners who appreciate traditional sailing rather than electronic convenience. Chartplotters and autopilots are commonly fitted across the market, a pragmatic concession to singlehanding the gaff rig and keeping coastal passages manageable. Heating and solar panels are often seen, reflecting the British cruising climate and the preference for extended season sailing without marina hookup. Hot water systems, a bimini, and AIS transponders appear as owner additions on better-equipped boats — sensible additions that experienced owners tend to fit as their sailing plans mature. The engine installation on Mk I boats was typically a small diesel, most commonly Yanmar units of the period, though some earlier examples carried a 9 hp Sole diesel; buyers should identify which is fitted and assess its service history accordingly.
What to Inspect
The defining structural consideration on any Mk I Crabber 24 is the mixed construction of the hull and deck. The Mk I boats used GRP hulls with ply cockpit and deck overlaid on top, and that ply element is the first place any pre-purchase survey must focus. Delamination, water ingress, and softness underfoot in the deck areas are common findings on neglected examples; the junction between the GRP hull and ply deck is a particular stress point. Boats that have had deck work or full GRP conversion of the deckwork represent a significant maintenance advantage over unmodified originals in poor condition.
The centreboard and its case deserve careful attention. The plate pivot and lifting mechanism can wear, and the case itself is prone to minor weeping where it meets the sole; any evidence of persistent dampness inside the boat warrants close inspection of the case seals. The Mk I displacement was lighter than later marks, and buyers should verify the ballast figure on the specific boat, as this affects stability margins for offshore work.
The gaff rig carries a jackyard topsail as standard, and all associated running rigging — peak and throat halyards, topping lift, and topsail sheets — should be inspected for wear. Gaff jaws, mast hoops, and the mast step are structural items that wooden-rig owners sometimes defer; survey any wooden spars for checking or rot at the heel and at fittings. Finally, confirm which engine is installed, review service documentation, and check the raw-water cooling system carefully on any elderly small diesel.
Availability and Buyer's Takeaway
The Cornish Crabber 24 Mk I is effectively a British market boat. The overwhelming majority of examples available at any given time will be found in the UK — southern England and the West Country in particular, reflecting the builder's Cornish origins and the gaff-cruising community concentrated in those waters. The occasional example surfaces in northern European waters, but buyers outside the UK seeking one should expect to import.
Prices across the mark vary considerably with condition, engine, and whether the ply deck has been addressed. The community of owners and the Cornish Crabbers club mean that boat histories are often well-documented and previous owners contactable — a genuine advantage in due diligence.
Before committing, work through this checklist:
- Commission an independent survey with explicit instruction to probe all deck and cockpit ply areas for softness and delamination
- Inspect the centreboard case internally for moisture and the plate pivot for wear
- Verify the ballast figure and confirm keel or plate security
- Check all wooden spars for rot at heels, fittings, and any checking along the grain
- Review the full service history of the engine and confirm cooling system integrity
- Examine all gaff-rig ironwork: jaws, bands, and mast hoops
- Confirm the running rigging has been renewed within a reasonable interval
- Identify whether the boat is Mk I or Mk II construction, and price accordingly
Price & volume trends
Monthly asking-price and listing-volume trends for the Cornish Crabbers 24 Mk I. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 8 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Oct 25 | 6 | $ 50,881 | — |
| Dec 25 | 1 | $ 34,790 | -31.6% |
| Jan 26 | 1 | $ 53,347 | +53.3% |
| Feb 26 | 1 | $ 93,779 | +75.8% |
| Apr 26 | 12 | $ 40,052 | -57.3% |
| May 26 | 1 | $ 18,769 | -53.1% |
| Jun 26 | 1 | $ 53,619 | +185.7% |
| Jul 26 | 1 | $ 28,030 | -47.7% |
Where they're listed
Cornish Crabbers 24 Mk I listings appear across 2 countries. United Kingdom has the most listings with 23 (95.8%), followed by Netherlands.
Country view
24 listings · 2 countries| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United Kingdom | $ 53,347 | 23 | 3 | 95.8% |
| Netherlands | $ 28,030 | 1 | 1 | 4.2% |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
4 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Cornish Crabbers 24 Mk IYou are here | — | $ 50,757 | 24 | 4 |
| Moody 33 Mk I | 33' | $ 20,564 | 13 | 4 |
| Cornish Crabbers 24 Mk V | 24.02' | $ 81,685 | 12 | 5 |
| Rustler 24 | 24' | $ 50,000 | 4 | 1 |