Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
8.1 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 36.2′, the Opium 39 tops out around 8.1 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √36.2′ LWL = 8.1 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Displacement / Length
117
Ultralight — responsive and fast, but carries less stores.
Hull Speed
8.1kts
Pounds/Inch Immersion
11lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Opium 39 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Hanse 385
How It Compares
Side-by-side with the boats most often cross-shopped against the Opium 39.
| Opium 39 | Beneteau 37 | Cc 115 | Cr 371 | Hanse 385 | Malo 37 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 37.6 | 37.7 | 37.8 | 37.9 | 37.4 | 37.8 |
| LWL | 36.2 | 34.1 | 33.0 | 30.5 | 34.1 | 31.9 |
| Beam | 13.7 | 12.8 | 11.9 | 10.6 | 12.7 | 11.8 |
| Displacement | 12 | 14 | 11 | 12 | 16 | 17 |
| Ballast | — | 4 | 4 | 5 | 4 | 5 |
| Sail Area | — | 620 | 781 | 688 | 724 | 673 |
| Performance | ||||||
| PHRF | — | — | — | — | 89 | — |
| SA/Disp | — | 17.1 | 24.2 | 20.2 | 17.8 | 15.8 |
| Bal/Disp | — | 30.4 | 35.6 | 42.2 | 29.0 | 33.3 |
| Comfort | — | 20.6 | 19.5 | 25.9 | 24.9 | 30.5 |
| Capsize | — | 2.13 | 2.10 | 1.82 | 1.99 | 1.81 |
| Hull Speed | — | 7.8 | 7.7 | 7.4 | 7.8 | 7.6 |