The Seamaster Sailer 815 is a quintessential example of the British "family cruiser" era of the late 1970s. Designed by the esteemed naval architecture firm Holman & Pye and built by Seamaster Ltd. in Great Dunmow, Essex, the 815 was introduced to provide a seaworthy, manageable, and surprisingly spacious 27-foot platform for coastal exploration. Emerging from a yard that had already perfected fiberglass construction with its successful motor cruiser line, the 815 prioritized structural integrity and a balanced hull form over the extreme racing trends of the International Offshore Rule (IOR) era. While Seamaster was famously associated with river and motor boats, the Sailer range—which included the smaller 23 and the larger, iconic 925—demonstrated that the builder could translate its "big boat" build quality into a sailing yacht that felt considerably larger than its 26'9" length suggested.
Seamaster Sailer 815 Sailboats for Sale & Market Overview
- Make
- Seamaster
- Model
- Sailer 815
- Builder
- Seamaster Ltd.
- Designer
- Holman & Pye
- Number Built
- 136
- Production Year(s)
- 1976 - 1981
Below are the most recent Seamaster Sailer 815 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 | $5,773 |
| Oct 2025 | 2 | $3,517 |
| Nov 2025 | 1 | $8,048 |
Median Price by Country
Listings by Country
| Model | LOA | Median Price (USD) | Listings | Recent |
|---|---|---|---|---|
| Southerly 115 | 36.83' | $101,440 | 27 | 12 |
| Westerly 33 | 33.27' | $29,236 | 26 | 11 |
| Catalina 315 | 31.92' | $169,500 | 23 | 2 |
| Moody 31 Mk I | 30.75' | $28,372 | 22 | 11 |
| Gulfstar 47 Sailmaster | 47.42' | $117,500 | 12 | 2 |
| Seamaster Sailer 925 | 28.25' | $11,835 | 10 | 6 |
| Colvic Sailor 26 | 26.92' | $6,086 | 8 | 3 |
| Cobra Yachts 750 | 25' | $9,130 | 5 | 2 |
| Islander 40 MS | 44' | $30,000 | 5 | 2 |
| Seamaster Sailer 815 | $6,234 | 4 | 0 | |
| Beneteau Idylle 1150 | 37.73' | $88,356 | 1 | 0 |
| Country | Median Price (USD) | Listings (past 12 months) | Recent (90d) |
|---|---|---|---|
| United Kingdom | $6,695 | 3 | 0 |
| Germany | $5,773 | 1 | 0 |
Frequently Asked Questions
- How much does a used Seamaster Sailer 815 cost?
- The median asking price for a used Seamaster Sailer 815 over the past 12 months is $6,234. Prices vary by condition, year, equipment, and location.
- How many Seamaster Sailer 815 sailboats are for sale?
- We have tracked 4 Seamaster Sailer 815 listings over the past 12 months, with 0 listed within the last 90 days.
- Where is the cheapest place to buy a Seamaster Sailer 815?
- Germany currently has the lowest median asking price at $5,773, while United Kingdom is the most expensive at $6,695 — a 16% difference.
- What are similar sailboats to the Seamaster Sailer 815?
- Comparable models include the Southerly 115, Westerly 33, Catalina 315. See the comparison table above for pricing and availability.