Sadler 25 Mk III Buyer's Guide
Shopping the used Sadler 25 Mk III means looking at a late-seventies David Sadler design built by Sadler Yachts in solid fiberglass. She is a masthead sloop of about 24 feet on the waterline, beamy for her length and carrying a fin-keel hull with roughly 1,900 pounds of lead ballast. Buyers on the brokerage market will find her concentrated in certain regions and usually fitted for short-handed coastal sailing.
Layouts on the Used Market
The Mk III's length-to-beam ratio of 2.78 makes her more roomy than 73 percent of all comparable designs, which matters when inspecting a 24-foot hull where every inch counts. Her fin-keel configuration and 4.67-foot draft dependent on load are consistent across the class; there is no second hull configuration to choose between. The solid-GRP hull defines the build, so you are comparing condition and equipment rather than variant layouts.
Equipment and Common Upgrades
On the used market, a dodger is commonly fitted, and an autopilot and a short-handed setup are also commonly found, meaning many boats are trimmed for solo or two-person coastal work. A short-handed setup in practice means simplified sheet leads and often cockpit-led controls; paired with an autopilot, it lets a single sailor manage the 265-square-foot masthead rig without constant trimming. The dodger adds weather protection at the companionway, a real gain on a small open cockpit.
What to Inspect
Her capsize screening value of 2.21 means she would not meet ocean-race acceptance, so inspect for coastal-use wear rather than offshore modification. With a wetted surface of about 193 square feet and an immersion rate of 585 pounds per inch, check the solid hull for load-related sag or keel-root stress at the fin-keel joint, since the boat sits heavily to her ballast when equipped.
Availability and Buyer's Takeaway
The Sadler 25 Mk III is typically found in the United Kingdom and Ireland. For a buyer, the takeaway is straightforward:
- Confirm the fin-keel hull joint and solid-GRP condition
- Expect commonly fitted dodger, autopilot, and short-handed controls
- Verify masthead rigging sizes: 70-foot 5/16-inch halyards, 24-foot 3/8-inch sheets
- Treat her as a beamy coastal cruiser, not an ocean racer
Price & volume trends
Monthly asking-price and listing-volume trends for the Sadler 25 Mk III. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 2 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Sep 25 | 2 | $5,951 | — |
| Apr 26 | 1 | $7,896 | +32.7% |
Where they're listed
Sadler 25 Mk III listings appear across 1 country. United Kingdom has the most listings with 1.
Country view
1 listings · 1 country| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United Kingdom | $7,896 | 1 | 0 | 100.0% |
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 |
|---|---|---|---|---|
| Cape Dory 25 | 24.83' | $ 8,000 | 28 | 8 |
| Sadler 25 Mk II | 24.33' | $ 5,966 | 21 | 4 |
| Seaward 25 | 26.75' | $ 14,750 | 6 | 2 |
| Sadler 25 Mk IIIYou are here | — | $ 7,888 | 1 | 0 |