The Cyber 4800 is aggressively canvassed for its weight.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
9.2 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 46.9′, the Cyber 4800 tops out around 9.2 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √46.9′ LWL = 9.2 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
SA / Displacement
33.3
Performance-oriented — carries a lot of canvas for its weight.
Displacement / Length
71
Ultralight — responsive and fast, but carries less stores.
Hull Speed
9.2kts
Estimated Speed by Wind
Rough boat speed estimates at different true wind speeds and points of sail — derived from hull speed, SA/D, and displacement, not measured polars.
| Point of Sail | 6 kts TWS | 10 kts TWS | 15 kts TWS | 20 kts TWS |
|---|---|---|---|---|
| Close-hauled40–50° | 4.3 | 5.5 | 6.1 | 6.4 |
| Close Reach60° | 5.2 | 6.6 | 7.4 | 7.7 |
| Beam Reach90° | 6.4 | 8.1 | 9.1 | 9.8 |
| Broad Reach120–135° | 5.9 | 7.5 | 8.4 | 9.1 |
| Run150–180° | 4.8 | 6.0 | 6.7 | 7.0 |
These are simplified estimates based on hull speed (9.2 kts),
SA/D (33.3), and empirical efficiency curves — not instrument-measured
polars. Real-world speed varies with sea state, bottom condition, sail trim, and current.
Speeds in gold approach hull speed;
bold gold means near or at hull speed.
Wind Range & Comfort Envelope
Estimated wind ranges for comfortable sailing on the Cyber 4800 — based on sail area, ballast, and displacement characteristics.
Ghosting
0–5 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
5–16 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
16–24 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
24+ kts
Storm conditions. Storm jib or bare poles. Seek shelter if coastal.
How It Compares
Side-by-side with the boats most often cross-shopped against the Cyber 4800.
| Cyber 4800 | Catana 48 | Outremer 45 2 | |
|---|---|---|---|
| Dimensions | |||
| LOA | 47.6 | 48.0 | 48.0 |
| LWL | 46.9 | 44.0 | 48.0 |
| Beam | 24.3 | 23.3 | 23.5 |
| Displacement | 16 | 12 | 19 |
| Sail Area | 1 | 1 | 1 |
| Performance | |||
| SA/Disp | 33.3 | 39.5 | 25.6 |
| Comfort | — | 6.4 | — |
| Capsize | — | 4.02 | — |
| Hull Speed | — | 8.9 | — |