The International 21 stands as the sophisticated, performance-oriented sibling to the venerable West Wight Potter series. While International Marine is best known for the boxy, high-volume hulls of the Potter 15 and 19, the International 21 was designed to satisfy sailors who demanded a sleeker profile and more refined sailing characteristics without sacrificing the brand’s hallmark trailerability. It is a distinct departure from the "pocket trawler" aesthetic, offering a low-profile cabin trunk, a sharp entry, and a more aggressive sail plan that positions it closer to a sport-boat or modern daysailer than a traditional cruiser. Built with the same robust fiberglass techniques as the Potter line, the 21 utilizes a ballasted swing keel to achieve a balance between stability and the ability to be launched in shallow water.
International 21 Sailboats for Sale & Market Overview
- Make
- International
- Model
- 21
- Builder
- International Marine
- Designer
- Helsen
- Number Built
- Production Year(s)
- 1976 - ??
Below are the most recent International 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) |
|---|---|---|
| Sep 2025 | 1 | $1,500 |
| Model | LOA | Median Price (USD) | Listings | Recent |
|---|---|---|---|---|
| Catalina 22 | 23.83' | $6,475 | 68 | 11 |
| Viko 21 | 21.33' | $29,405 | 24 | 10 |
| Beneteau First 21.7 | 21' | $22,356 | 19 | 7 |
| ETAP 21i | 21' | $15,179 | 19 | 11 |
| Ultimate 20 | 20.83' | $15,000 | 6 | 2 |
| Sunbeam 22.1 | 22.47' | $61,093 | 6 | 0 |
| Sunbeam 32.1 | 32.74' | $296,892 | 6 | 2 |
| Triton 21 | 21.25' | $81,566 | 4 | 0 |
| Precision 21 | 20.75' | $5,500 | 3 | 1 |
| International 21 | $1,500 | 1 | 0 |
| Country | Median Price (USD) | Listings (past 12 months) | Recent (90d) |
|---|---|---|---|
| United States | $1,500 | 1 | 0 |
Frequently Asked Questions
- How much does a used International 21 cost?
- The median asking price for a used International 21 over the past 12 months is $1,500. Prices vary by condition, year, equipment, and location.
- How many International 21 sailboats are for sale?
- We have tracked 1 International 21 listings over the past 12 months, with 0 listed within the last 90 days.
- What are similar sailboats to the International 21?
- Comparable models include the Catalina 22, Viko 21, Beneteau First 21.7. See the comparison table above for pricing and availability.