The Bostrom 31, frequently recognized by its succinct "B31" branding, represents a pivotal era of Scandinavian boatbuilding when fiberglass was beginning to replace timber as the primary medium for mass production. Designed by Bruno Boström in 1973, the vessel was conceived as a rugged offshore cruiser capable of navigating the demanding waters of the Baltic and North Seas. Over 1,000 units were produced between 1973 and 1988, marking it as one of the most successful 31-foot designs of its generation. The boat’s profile is characterized by a traditional aesthetic, featuring a balanced masthead sloop rig and a hull that emphasizes sea-kindliness over outright racing speed. It is often cited as a more affordable, yet comparably robust, alternative to contemporaneous yachts from Albin or Hallberg-Rassy.
Bostrom 31 Sailboats for Sale & Market Overview
- Make
- Bostrom
- Model
- 31
- Builder
- —
- Designer
- Bruno Boström/Grandinsson
- Number Built
- Production Year(s)
- 1973 - ??
Below are the most recent Bostrom 31 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) |
|---|---|---|
| Dec 2025 | 1 | $15,315 |
| Jan 2026 | 1 | $40,044 |
| Feb 2026 | 1 | $11,781 |
| Mar 2026 | 1 | $40,644 |
Median Price by Country
Listings by Country
| Model | LOA | Median Price (USD) | Listings | Recent |
|---|---|---|---|---|
| Hallberg-Rassy 312 | 30.92' | $53,443 | 44 | 18 |
| Hallberg-Rassy 31 | 31.56' | $109,561 | 32 | 13 |
| Moody 31 Mk I | 30.75' | $28,372 | 22 | 11 |
| Hallberg-Rassy Monsun 31 | 31' | $28,104 | 20 | 14 |
| Dufour 31 | 30.83' | $22,383 | 15 | 1 |
| Conyplex 31 HT | 31.17' | $22,972 | 15 | 6 |
| Cal 31 | 31.5' | $10,500 | 9 | 2 |
| Granada 31 | 30.81' | $18,048 | 9 | 6 |
| Bristol 32 | 32' | $16,900 | 5 | 0 |
| Boström 31 | $27,679 | 4 | 2 |
| Country | Median Price (USD) | Listings (past 12 months) | Recent (90d) |
|---|---|---|---|
| Spain | $40,344 | 2 | 1 |
| Germany | $15,315 | 1 | 0 |
| Italy | $11,781 | 1 | 1 |
Frequently Asked Questions
- How much does a used Bostrom 31 cost?
- The median asking price for a used Bostrom 31 over the past 12 months is $27,679. Prices vary by condition, year, equipment, and location.
- How many Bostrom 31 sailboats are for sale?
- We have tracked 4 Bostrom 31 listings over the past 12 months, with 2 listed within the last 90 days.
- Are Bostrom 31 prices going up or down?
- The median asking price for the Bostrom 31 has decreased by 5.3% over the last 3 months compared to the 12-month average.
- Where is the cheapest place to buy a Bostrom 31?
- Italy currently has the lowest median asking price at $11,781, while Spain is the most expensive at $40,344 — a 242% difference.
- What are similar sailboats to the Bostrom 31?
- Comparable models include the Hallberg-Rassy 312, Hallberg-Rassy 31, Moody 31 Mk I. See the comparison table above for pricing and availability.