The Liberty 458 is moderately powered for comfortable coastal cruising, with a steady, comfortable ride offshore, and respectable in club racing.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 40.3′, the Liberty 458 tops out around 8.5 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √40.3′ LWL = 8.5 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
PHRF Rating
138s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
SA / Displacement
15.1
Moderate sail power — a capable coastal cruiser, not overpowered.
Comfort Ratio
37.8
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.65
Below the 2.0 offshore threshold — acceptable for ocean passages.
Pounds/Inch Immersion
1lbs
Weight needed to sink the hull one inch — loading sensitivity.
Motion & Offshore Suitability
Two ratios that matter most when you're planning passages — how the boat feels in a seaway, and whether the hull geometry is suitable for open ocean.
Comfort Ratio
37.8
Good offshore comfort — steady enough for multi-day passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.65
Below the 2.0 offshore threshold — acceptable for ocean passages.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
PHRF Fleet Position
Where the Liberty 458 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Little Harbor 46
108s/nm
Oyster 46
135s/nm
Liberty 458
138s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
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° |
3.2 |
4.0 |
4.5 |
4.7 |
| Close Reach60° |
3.9 |
4.9 |
5.5 |
5.7 |
| Beam Reach90° |
4.7 |
6.0 |
6.7 |
7.0 |
| Broad Reach120–135° |
4.4 |
5.5 |
6.2 |
6.5 |
| Run150–180° |
3.5 |
4.4 |
5.0 |
5.2 |
These are simplified estimates based on hull speed (8.5 kts),
SA/D (15.1), 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 Liberty 458 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–20 kts
20–28 kts
28+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–28 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
28+ 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 Liberty 458.
|
Liberty 458 |
Delta 46 |
Little Harbor 46 |
Morris 46 |
Oceanic 46 Brewer |
Oyster 46 |
| Dimensions |
| LOA |
45.8 |
45.8 |
45.7 |
45.9 |
45.8 |
46.0 |
| LWL |
40.3 |
40.3 |
36.5 |
34.5 |
36.5 |
39.6 |
| Beam |
12.9 |
12.8 |
13.8 |
13.0 |
13.5 |
14.0 |
| Displacement |
31 |
30 |
32 |
23 |
33 |
31 |
| Ballast |
11 |
11 |
13 |
8 |
11 |
12 |
| Sail Area |
925 |
925 |
966 |
879 |
— |
980 |
| Performance |
| PHRF |
138 |
— |
108 |
— |
— |
135 |
| SA/Disp |
15.1 |
15.4 |
15.2 |
17.2 |
— |
15.6 |
| Bal/Disp |
— |
36.7 |
42.5 |
36.7 |
34.3 |
40.3 |
| Comfort |
37.8 |
36.9 |
39.0 |
31.5 |
— |
35.4 |
| Capsize |
1.65 |
1.66 |
1.73 |
1.82 |
— |
1.77 |
| Hull Speed |
8.5 |
8.5 |
8.1 |
7.9 |
— |
8.4 |