The Moody 37 is moderately powered for comfortable coastal cruising, with acceptable motion comfort for coastal passages, and respectable in club 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 31.3′, the Moody 37 tops out around 7.5 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √31.3′ LWL = 7.5 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
129s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
SA / Displacement
16.2
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
40.0%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
238
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
26.4
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.98
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
26.4
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.98
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 Moody 37 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
J/37
75s/nm
X 372
95s/nm
Moody 37
129s/nm
Cruiser/racer — competitive in club racing, comfortable cruising.
Passport 37
138s/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 |
3.7 |
4.1 |
4.3 |
| Close Reach60° |
3.5 |
4.5 |
5.0 |
5.2 |
| Beam Reach90° |
4.3 |
5.5 |
6.1 |
6.4 |
| Broad Reach120–135° |
4.0 |
5.0 |
5.6 |
5.9 |
| Run150–180° |
3.2 |
4.0 |
4.5 |
4.7 |
These are simplified estimates based on hull speed (7.5 kts),
SA/D (16.2), 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 Moody 37 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–22 kts
22–32 kts
32+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–22 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
22–32 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
32+ 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 Moody 37.
|
Moody 37 |
J/37 |
Oyster 37 Heritage |
Passport 37 |
Valiant 37 |
X 372 |
| Dimensions |
| LOA |
37.0 |
37.0 |
37.0 |
37.0 |
37.0 |
37.0 |
| LWL |
31.3 |
30.8 |
31.3 |
29.6 |
31.6 |
29.5 |
| Beam |
12.5 |
12.1 |
12.0 |
11.9 |
11.5 |
11.7 |
| Displacement |
16 |
12 |
14 |
17 |
17 |
11 |
| Ballast |
6 |
4 |
6 |
6 |
6 |
4 |
| Sail Area |
646 |
641 |
610 |
673 |
667 |
593 |
| Performance |
| PHRF |
129 |
75 |
— |
138 |
— |
95 |
| SA/Disp |
16.2 |
19.4 |
16.5 |
16.1 |
16.2 |
19.0 |
| Bal/Disp |
40.0 |
40.0 |
— |
— |
39.4 |
43.1 |
| Comfort |
26.4 |
29.0 |
24.9 |
31.1 |
30.6 |
20.6 |
| Capsize |
1.98 |
1.67 |
1.97 |
1.84 |
1.79 |
2.10 |
| Hull Speed |
7.5 |
8.7 |
7.5 |
7.3 |
7.5 |
7.3 |