The Cambria 40 Cb is moderately powered for comfortable coastal cruising, with a gentle bluewater motion.
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 32.5′, the Cambria 40 Cb tops out around 7.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √32.5′ LWL = 7.6 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
14.9
Moderate sail power — a capable coastal cruiser, not overpowered.
Displacement / Length
338
Moderate-heavy — carries provisions well, deliberate in light air.
Comfort Ratio
40.6
Very comfortable in a seaway — a genuine bluewater motion.
Capsize Screening
1.66
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
40.6
Very comfortable in a seaway — a genuine bluewater motion.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.66
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 Cambria 40 Cb sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Cambria 40
114s/nm
Passport 41
132s/nm
Contest 42
174s/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° |
2.9 |
3.6 |
4.0 |
4.2 |
| Close Reach60° |
3.5 |
4.4 |
4.9 |
5.1 |
| Beam Reach90° |
4.2 |
5.4 |
6.0 |
6.2 |
| Broad Reach120–135° |
3.9 |
5.0 |
5.5 |
5.8 |
| Run150–180° |
3.1 |
4.0 |
4.4 |
4.6 |
These are simplified estimates based on hull speed (7.6 kts),
SA/D (14.9), 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 Cambria 40 Cb — 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 Cambria 40 Cb.
|
Cambria 40 Cb |
Cambria 40 |
Contest 42 |
Morgan Out Island 41 |
Passport 41 |
Tartan 41 Passagemaker |
| Dimensions |
| LOA |
41.4 |
41.4 |
41.3 |
41.3 |
41.3 |
41.3 |
| LWL |
32.5 |
32.5 |
32.8 |
34.0 |
33.4 |
32.3 |
| Beam |
12.3 |
12.3 |
12.7 |
13.8 |
12.7 |
13.3 |
| Displacement |
26 |
26 |
24 |
27 |
22 |
24 |
| Ballast |
— |
9 |
10 |
9 |
8 |
— |
| Sail Area |
814 |
814 |
660 |
670 |
— |
788 |
| Performance |
| PHRF |
— |
114 |
174 |
— |
132 |
— |
| SA/Disp |
14.9 |
14.9 |
12.7 |
12.0 |
— |
15.1 |
| Bal/Disp |
— |
36.5 |
43.6 |
— |
37.3 |
— |
| Comfort |
40.6 |
40.6 |
36.0 |
34.9 |
— |
34.1 |
| Capsize |
1.66 |
1.66 |
1.75 |
1.85 |
— |
1.84 |
| Hull Speed |
7.6 |
7.6 |
7.7 |
7.8 |
— |
7.6 |