The Centurion 45 is moderately powered for comfortable coastal cruising, 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 36.2′, the Centurion 45 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.
PHRF Rating
63s/nm
Performance racer — quick around the cans and offshore.
SA / Displacement
17.0
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
39.1%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
228
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
30.4
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.84
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
30.4
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
1.84
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 45 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Centurion 45
63s/nm
Performance racer — quick around the cans and offshore.
Tartan 4600
75s/nm
Oyster 46
135s/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° |
3.2 |
4.1 |
4.5 |
4.7 |
| Close Reach60° |
3.9 |
4.9 |
5.5 |
5.7 |
| Beam Reach90° |
4.8 |
6.0 |
6.7 |
7.0 |
| Broad Reach120–135° |
4.4 |
5.6 |
6.2 |
6.5 |
| Run150–180° |
3.5 |
4.4 |
5.0 |
5.2 |
These are simplified estimates based on hull speed (8.1 kts),
SA/D (17.0), 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 45 — 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 Centurion 45.
|
Centurion 45 |
Contest 46 |
Morris 46 |
Oyster 46 |
Sweden Yachts 45 |
Tartan 4600 |
| Dimensions |
| LOA |
46.2 |
46.4 |
45.9 |
46.0 |
46.4 |
46.2 |
| LWL |
36.2 |
38.9 |
34.5 |
39.6 |
39.0 |
39.6 |
| Beam |
13.3 |
13.8 |
13.0 |
14.0 |
13.7 |
14.3 |
| Displacement |
24 |
33 |
23 |
31 |
27 |
28 |
| Ballast |
9 |
13 |
8 |
12 |
11 |
8 |
| Sail Area |
886 |
— |
879 |
980 |
— |
— |
| Performance |
| PHRF |
63 |
— |
— |
135 |
— |
75 |
| SA/Disp |
17.0 |
— |
17.2 |
15.6 |
— |
— |
| Bal/Disp |
39.1 |
40.3 |
36.7 |
40.3 |
41.9 |
30.4 |
| Comfort |
30.4 |
38.9 |
31.5 |
35.4 |
— |
— |
| Capsize |
1.84 |
1.70 |
1.82 |
1.77 |
— |
— |
| Hull Speed |
8.1 |
8.4 |
7.9 |
8.4 |
— |
— |