Seadog 30 Buyer's Guide
The Seadog 30 is a 30-foot ketch designed by Reg Freeman in the mid sixties and built by Glascade GRP Ltd. as well as other yards, with 140 boats produced between 1966 and 1974. For a shopper on the brokerage market, the appeal is a fibreglass ultra-heavy cruiser of known ratios and a documented sheet inventory, offered in a handful of European markets rather than globally.
Layouts on the Used Market
The sourced material does not describe the Seadog 30's interior, and the background specification records only 52 gallons of diesel fuel and 46 gallons of water capacity in a 30-foot hull on a 24-foot waterline. A buyer should expect a conservative cruiser layout consistent with that tankage and the 9.5-foot beam, but no berth, head, or galley claim can be made from the available documents. Seadog 30 boats offered for sale will vary with owner history given the multi-yard construction record.
Equipment and Common Upgrades
On the used market, chartplotters, solar, and autopilots are commonly fitted to Seadog 30 boats offered for sale. A furling main and a hardtop are often seen additions. The documented ketch rig itself carries known original-spec line lengths — jib and genoa sheets of 9.1 m at 12 mm, a 22.9 m mainsheet at 12 mm, and a 20.1 m spinnaker sheet at 12 mm — which any owner upgrade of running rigging should respect. No less-common or owner-upgrade tier items are recorded for this model.
What to Inspect
The authority documents extracted for the Seadog 30 contain no documented structural defects, flooding paths, or systemic known issues. The fibreglass hull and documented build at multiple yards are the only construction facts available, so a surveyor's report — not the model record — must carry the condition findings. Buyers should still confirm the Perkins 107 diesel installation and the iron ballast integrity as part of any standard survey.
Availability and Buyer's Takeaway
Seadog 30 boats typically appear in the United Kingdom, Germany, and Ireland. For the shopper, the takeaway is a finite-production Freeman ketch with strong comfort ratios and no sourced defect history:
- Confirm hull build yard and survey the fibreglass condition
- Verify Perkins 107 diesel and 52-gallon fuel / 46-gallon water tankage
- Check ketch rig sheet inventory against documented 12 mm diameters
- Expect commonly fitted chartplotter, solar, autopilot; often seen furling main, hardtop
- Shop within United Kingdom, Germany, Ireland markets
Price & volume trends
Monthly asking-price and listing-volume trends for the Seadog 30. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 6 rows
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Jun 25 | 1 | $16,306 | — |
| Sep 25 | 3 | $13,521 | -17.1% |
| Oct 25 | 2 | $16,306 | +20.6% |
| Feb 26 | 1 | $16,306 | 0.0% |
| Mar 26 | 1 | $3,537 | -78.3% |
| Jun 26 | 2 | $24,120 | +581.9% |
Where they're listed
Seadog 30 listings appear across 3 countries. United Kingdom has the most listings with 7 (77.8%), followed by Germany and Ireland.
Country view
9 listings · 3 countries| Country | Median ask | Listings · 12 mo | Active · 90 d | Share |
|---|---|---|---|---|
| United Kingdom | $16,306 | 7 | 2 | 77.8% |
| Germany | $3,537 | 1 | 0 | 11.1% |
| Ireland | $6,794 | 1 | 0 | 11.1% |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
3 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Kingfisher 30 | 30' | $ 33,903 | 17 | 4 |
| Seadog 30You are here | — | $ 16,306 | 9 | 2 |
| Morgan Yachts 32 | 31.92' | $ 27,109 | 7 | 0 |