Seastream 43 Buyer's Guide
The Seastream 43 is a heavy displacement pilothouse cutter built in the UK by Seastream Yachts Ltd. from 1981, with 35 hulls recorded. She is a bluewater-oriented 43-footer carrying a Perkins diesel, solid fibreglass hull, and a fin keel with skeg-hung rudder—a boat many owners have taken around the world. Her generous tankage of 125 gallons fuel and 210 gallons water supports long passage-making when loaded with cruising gear. The cutter rig with deck-stepped mast and stainless steel standing rigging carries a slab-reef mainsail, roller-furling genoa, and hanked staysail, all led to cockpit winches for manageable shorthanded handling. Below, the layout gives three separate cabins and two heads sleeping up to eight, with a large saloon and pilothouse hosting the galley to port and navigation station to starboard.
What to Inspect
The one design point a buyer should weigh is the deck-stepped mast, which may be less strong than a keel-stepped mast. At a viewing, examine the mast step and surrounding deck for compression, crazing, or softness where the column meets the cabin top, and check that chainplate loads have not opened hairline deck joints. A compromised step is the failure mode to rule out before purchase, so press on the cabin top near the mast and look for flex or staining below. Also confirm the shaft-drive transmission and Perkins service history, and verify the three cabins, two heads, and pilothouse engine, bow thruster, and windlass controls are intact. Inspect the lazarette and cockpit benches for worn cushions or locker lid rot.
Buyer's Takeaway
- Inspect the mast step and deck for compression or softness
- Confirm Perkins diesel and shaft drive service history
- Verify three cabins, two heads, and pilothouse systems intact
- Check roller furling genoa and slab-reef mainsail gear
- Press test cabin top near mast for flex or below-deck staining
- Review standing rigging and chainplate bedding for cracks
Price & volume trends
Monthly asking-price and listing-volume trends for the Seastream 43. The line shows the median ask each month; the bars show how many listings appeared.
Monthly breakdown · 1 row
| Month | Listings | Median ask | Δ vs. last mo. |
|---|---|---|---|
| Sep 25 | 1 | $170,904 | — |
Comparable models
Similar length, displacement, and era. Open a row to compare that model's market page.
Similar boats to compare
7 similar designs| Model | LOA | Median ask | Listings · 12 mo | Active · 90 d |
|---|---|---|---|---|
| Wauquiez Amphitrite 43 | 42.75' | $ 88,726 | 34 | 11 |
| Dufour Classic 43 | 43' | $ 61,565 | 29 | 3 |
| Hans Christian 43 | 42.62' | $ 154,500 | 24 | 9 |
| Slocum 43 | 42.5' | $ 98,500 | 20 | 4 |
| Nauticat 43 | 42.67' | $ 145,000 | 19 | 2 |
| Contest Yachts 43 | 42.65' | $ 174,247 | 12 | 3 |
| Swan 43 | 42.78' | $ 79,775 | 10 | 0 |