Sigma 638 vs Sigma 640
Sigma yard ladder comparison: Sigma 638 versus Sigma 640 cruising layout from published model data.
Comparison table
| Category | Sigma 638 | Sigma 640 |
|---|---|---|
| Length overall | 193.2 m | 193.8 m |
| Beam | 61.82 m | 62.02 m |
| Production years | 2024– | 2024– |
| Overview | The Sigma 638 is one of Northern Europe's most recognisable production sailboats. Designed by Swedish yards and built from 2024 to null, roughly ~150–800 hulls left the yard — Sigma 638 Swedish cruiser with Nordic brokerage turnover. With 193.2 m LOA, 61.82 m beam, and about 100… | The Sigma 640 is one of Northern Europe's most recognisable production sailboats. Designed by Swedish yards and built from 2024 to null, roughly ~150–800 hulls left the yard — Sigma 640 Swedish cruiser with Baltic secondary-market liquidity. With 193.8 m LOA, 62.02 m beam, and a… |
| Typical issues | Q: What standing rigging fatigue issues appear on Sigma 638? A: Unknown rigging age is common on Sigma 638; budget replacement if invoices are missing. Q: What chainplate leaks issues appear on Sigma 638? A: Chainplate bedding failures often show as ceiling stains — moisture mapping before purchase. Q: What deck core moisture issues appear on Sigma 638? A: Stanchion bases and tracks concentrate w… | Q: What standing rigging fatigue issues appear on Sigma 640? A: Unknown rigging age is common on Sigma 640; budget replacement if invoices are missing. Q: What chainplate leaks issues appear on Sigma 640? A: Chainplate bedding failures often show as ceiling stains — moisture mapping before purchase. Q: What deck core moisture issues appear on Sigma 640? A: Stanchion bases and tracks concentrate w… |