The Alden 52 is well-powered with enough sail area to move in light air, with a steady, comfortable ride offshore, and competitive on the racecourse.
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 40.0′, the Alden 52 tops out around 8.5 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √40.0′ 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
78s/nm
Performance racer — quick around the cans and offshore.
SA / Displacement
18.3
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Ballast / Displacement
41.8%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
272
Moderate-heavy — carries provisions well, deliberate in light air.
Comfort Ratio
39.7
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.69
Below the 2.0 offshore threshold — acceptable for ocean passages.
Pounds/Inch Immersion
2lbs
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
39.7
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
1.69
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 Alden 52 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Alden 52
78s/nm
Performance racer — quick around the cans and offshore.
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° |
3.5 |
4.4 |
4.9 |
5.1 |
| Close Reach60° |
4.2 |
5.3 |
6.0 |
6.2 |
| Beam Reach90° |
5.2 |
6.6 |
7.3 |
7.6 |
| Broad Reach120–135° |
4.8 |
6.1 |
6.8 |
7.1 |
| Run150–180° |
3.8 |
4.8 |
5.4 |
5.6 |
These are simplified estimates based on hull speed (8.5 kts),
SA/D (18.3), 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 Alden 52 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–6 kts
6–20 kts
20–30 kts
30+ kts
Ghosting
0–6 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
6–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–30 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
30+ kts
Storm conditions. Storm jib or bare poles. Seek shelter if coastal.