The Centurion 47 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 38.0′, the Centurion 47 tops out around 8.3 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √38.0′ LWL = 8.3 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
72s/nm
Performance racer — quick around the cans and offshore.
SA / Displacement
18.7
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Ballast / Displacement
42.7%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
244
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
31.7
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.89
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
31.7
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
1.89
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 Centurion 47 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Baltic 47
24s/nm
Centurion 47
72s/nm
Performance racer — quick around the cans and offshore.
Swan 47 Ss
75s/nm
Alden 46
84s/nm
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° |
3.4 |
4.4 |
4.9 |
5.1 |
| Close Reach60° |
4.2 |
5.3 |
5.9 |
6.1 |
| Beam Reach90° |
5.1 |
6.5 |
7.2 |
7.5 |
| Broad Reach120–135° |
4.7 |
6.0 |
6.7 |
7.0 |
| Run150–180° |
3.8 |
4.8 |
5.3 |
5.6 |
These are simplified estimates based on hull speed (8.3 kts),
SA/D (18.7), 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 Centurion 47 — 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.
How It Compares
Side-by-side with the boats most often cross-shopped against the Centurion 47.
|
Centurion 47 |
Alden 46 |
Baltic 47 |
Cr 470 |
J/145 |
Swan 47 Ss |
| Dimensions |
| LOA |
47.6 |
47.7 |
47.8 |
47.8 |
47.9 |
47.8 |
| LWL |
38.0 |
37.1 |
39.5 |
41.9 |
41.0 |
36.2 |
| Beam |
14.7 |
13.5 |
14.4 |
14.7 |
14.2 |
13.8 |
| Displacement |
30 |
32 |
24 |
29 |
26 |
32 |
| Ballast |
12 |
13 |
10 |
12 |
11 |
15 |
| Sail Area |
1 |
1 |
1 |
1 |
1,020 |
1 |
| Performance |
| PHRF |
72 |
84 |
24 |
— |
— |
75 |
| SA/Disp |
18.7 |
17.2 |
22.2 |
22.9 |
16.5 |
16.7 |
| Bal/Disp |
42.7 |
40.6 |
41.1 |
42.3 |
42.3 |
— |
| Comfort |
31.7 |
38.4 |
26.0 |
29.4 |
35.9 |
38.4 |
| Capsize |
1.89 |
1.70 |
1.98 |
1.90 |
1.54 |
1.73 |
| Hull Speed |
8.3 |
8.2 |
8.4 |
8.7 |
11.0 |
8.1 |