The Mason 37 is modestly canvassed and unhurried, with a gentle bluewater motion, designed for cruising comfort rather than 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 28.1′, the Mason 37 tops out around 7.1 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √28.1′ LWL = 7.1 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
168s/nm
Typical cruiser — designed for comfort and ease, not podium finishes.
SA / Displacement
12.0
Modestly canvassed — a comfortable, unhurried cruiser.
Comfort Ratio
40.1
Very comfortable in a seaway — a genuine bluewater motion.
Capsize Screening
1.73
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
40.1
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
1.73
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 Mason 37 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Cs 36
126s/nm
Mason 37
168s/nm
Typical cruiser — designed for comfort and ease, not podium finishes.
Union 36
180s/nm
Tayana 37
189s/nm
Ct 37
192s/nm
Pearson 365
210s/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° |
2.4 |
3.1 |
3.4 |
3.6 |
| Close Reach60° |
2.9 |
3.7 |
4.1 |
4.3 |
| Beam Reach90° |
3.6 |
4.6 |
5.1 |
5.3 |
| Broad Reach120–135° |
3.3 |
4.2 |
4.7 |
4.9 |
| Run150–180° |
2.7 |
3.4 |
3.8 |
3.9 |
These are simplified estimates based on hull speed (7.1 kts),
SA/D (12.0), 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 Mason 37 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–8 kts
8–22 kts
22–30 kts
30+ kts
Ghosting
0–8 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
8–22 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
22–30 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 Mason 37.
|
Mason 37 |
Cs 36 |
Ct 37 |
Pearson 365 |
Tayana 37 |
Union 36 |
| Dimensions |
| LOA |
36.6 |
36.5 |
36.7 |
36.4 |
36.7 |
36.7 |
| LWL |
28.1 |
29.3 |
31.8 |
30.0 |
31.0 |
32.0 |
| Beam |
12.1 |
11.5 |
11.5 |
11.4 |
11.5 |
11.3 |
| Displacement |
21 |
15 |
23 |
17 |
22 |
22 |
| Ballast |
6 |
6 |
7 |
7 |
8 |
7 |
| Sail Area |
586 |
822 |
832 |
— |
— |
— |
| Performance |
| PHRF |
168 |
126 |
192 |
210 |
189 |
180 |
| SA/Disp |
12.0 |
21.2 |
16.1 |
— |
— |
— |
| Bal/Disp |
— |
41.9 |
30.8 |
41.2 |
35.6 |
35.5 |
| Comfort |
40.1 |
29.5 |
42.9 |
— |
— |
— |
| Capsize |
1.73 |
1.85 |
1.60 |
— |
— |
— |
| Hull Speed |
7.1 |
7.3 |
7.6 |
— |
— |
— |