The Adams 21, also widely recognized by its original moniker, the Seahorse 6, holds a significant position in maritime history as the first production model from the drawing board of legendary Australian naval architect Joe Adams. Introduced in 1977 and primarily manufactured by Jarkan Yachts in Australia, the vessel was designed during an era when Adams was transitioning from his work with Ben Lexcen (then Bob Miller) to becoming a dominant force in performance yacht design. The boat was conceived to bridge the gap between a high-performance racing dinghy and a capable coastal cruiser, offering a light-displacement platform that could be easily trailered. While most were constructed in solid fiberglass, a limited number of specialized variants were produced in aluminum, such as the 1985 "GetOUTside" model.
Adams 21 Sailboats for Sale & Market Overview

- Make
- Adams
- Model
- 21
- Builder
- Jarkan Yachts
- Designer
- Adams
- Number Built
- Production Year(s)
- 1977 - ??
Below are the most recent Adams 21 sailboat listings (up to 10).
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| 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) |
|---|---|---|
| Jan 2026 | 1 | $35,792 |
| Model | LOA | Median Price (USD) | Listings | Recent |
|---|---|---|---|---|
| Catalina 22 | 23.83' | $6,475 | 68 | 11 |
| Viko 21 | 21.33' | $29,440 | 24 | 10 |
| Beneteau First 21.7 | 21' | $22,383 | 19 | 7 |
| Adams 10 | 33' | $12,169 | 12 | 2 |
| Adams 13 | 43.11' | $40,982 | 10 | 3 |
| Hunter 23 | 23.25' | $5,600 | 7 | 1 |
| Ultimate 20 | 20.83' | $15,000 | 6 | 2 |
| Triton 21 | 21.25' | $81,566 | 4 | 0 |
| Precision 21 | 20.75' | $5,500 | 3 | 1 |
| Hunter 26 | 25.75' | $15,000 | 3 | 3 |
| Adams 21 | $35,792 | 1 | 0 |
| Country | Median Price (USD) | Listings (past 12 months) | Recent (90d) |
|---|---|---|---|
| Australia | $35,792 | 1 | 0 |
Frequently Asked Questions
- How much does a used Adams 21 cost?
- The median asking price for a used Adams 21 over the past 12 months is $35,792. Prices vary by condition, year, equipment, and location.
- How many Adams 21 sailboats are for sale?
- We have tracked 1 Adams 21 listings over the past 12 months, with 0 listed within the last 90 days.
- What are similar sailboats to the Adams 21?
- Comparable models include the Catalina 22, Viko 21, Beneteau First 21.7. See the comparison table above for pricing and availability.