The Irwin 28 Mk III represents the final evolution of Ted Irwin’s highly successful 28-foot platform, a vessel that epitomized the "big small boat" philosophy of the late 1970s and early 1980s. Built in St. Petersburg, Florida, the Mk III was a significant departure from the original 1970 Mk I and the mid-70s Mk II. While it utilized the same fundamental hull shape, the Mk III featured a modernized deck mold, an enlarged cockpit, and a redesigned interior that capitalized on the boat's massive 10-foot, 1-inch beam. This model was specifically engineered to dominate the coastal cruising market, offering a blend of shallow-water accessibility and interior volume that few competitors in the 28-foot class could match at the time.
Irwin 28 Mk III Sailboats for Sale & Market Overview
- Make
- Irwin
- Model
- 28 Mk III
- Builder
- Irwin Yachts
- Designer
- Ted Irwin
- Number Built
- Production Year(s)
- 1974 - 1976
Below are the most recent Irwin 28 Mk III sailboat listings (up to 10).
Standard listing sites miss the technical details sailors need. Our database of 10,000+ models unlocks advanced filtering so you can search by keel type, rig configuration, and performance ratios—even when the seller forgot to include them.
Search across multiple sailboat listing websites at once, and get notified of new listings!
Example: Daily emails for "40 ft fin keel fractional sloops under $200k in Canada"Start Searching Now
| Source | Year | Make | Model | Price | Cabins | Heads | City | Country | Listing Date | |
|---|---|---|---|---|---|---|---|---|---|---|
DISCLAIMER: We are not affiliated with any external listing websites in any way. We simply aggregate publicly available listings to make it easier for buyers to find sailboats for sale. We cannot guarantee the accuracy of the listings, so please verify all information with the seller before making any decisions.
Market Overview
Price & Volume Trends
Monthly breakdown
| Month | Listings | Median Asking Price (USD) |
|---|---|---|
| Apr 2026 | 3 | $75,000 |
| Model | LOA | Median Price (USD) | Listings | Recent |
|---|---|---|---|---|
| Catalina 28 Mk II | 28.33' | $32,900 | 52 | 17 |
| Oday 28 | 28.25' | $9,800 | 21 | 11 |
| Catalina 30 Mk III | 29.92' | $25,000 | 17 | 3 |
| Irwin 43-CC Mk III | 45.5' | $69,900 | 10 | 6 |
| Irwin 38-2 | 40' | $35,750 | 10 | 4 |
| Irwin 41 | 41.5' | $45,116 | 10 | 2 |
| Irwin 52 | 52' | $129,500 | 8 | 2 |
| Irwin 44 | 43.5' | $49,900 | 6 | 4 |
| Irwin 28 Mk III | $75,000 | 3 | 3 |
| Country | Median Price (USD) | Listings (past 12 months) | Recent (90d) |
|---|---|---|---|
| United States | $75,000 | 3 | 3 |
Frequently Asked Questions
- How much does a used Irwin 28 Mk III cost?
- The median asking price for a used Irwin 28 Mk III over the past 12 months is $75,000. Prices vary by condition, year, equipment, and location.
- How many Irwin 28 Mk III sailboats are for sale?
- We have tracked 3 Irwin 28 Mk III listings over the past 12 months, with 3 listed within the last 90 days.
- Are Irwin 28 Mk III prices going up or down?
- The median asking price for the Irwin 28 Mk III has remained stable over the last 3 months compared to the 12-month average.
- What are similar sailboats to the Irwin 28 Mk III?
- Comparable models include the Catalina 28 Mk II, Oday 28, Catalina 30 Mk III. See the comparison table above for pricing and availability.