The Morris 42 is moderately powered for comfortable coastal cruising, with acceptable motion comfort for coastal passages, 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 33.5′, the Morris 42 tops out around 7.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √33.5′ LWL = 7.8 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
86s/nm
Performance racer — quick around the cans and offshore.
SA / Displacement
16.9
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
45.4%
Race-oriented ballast ratio — very stiff and powerful.
Displacement / Length
230
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
28.7
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.87
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
28.7
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
1.87
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 Morris 42 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Swan 42
78s/nm
Morris 42
86s/nm
Performance racer — quick around the cans and offshore.
Tartan 42
114s/nm
Valiant 42
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° |
3.1 |
3.9 |
4.3 |
4.5 |
| Close Reach60° |
3.7 |
4.7 |
5.3 |
5.5 |
| Beam Reach90° |
4.6 |
5.8 |
6.4 |
6.7 |
| Broad Reach120–135° |
4.2 |
5.3 |
6.0 |
6.2 |
| Run150–180° |
3.4 |
4.3 |
4.8 |
5.0 |
These are simplified estimates based on hull speed (7.8 kts),
SA/D (16.9), 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 Morris 42 — 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 Morris 42.
|
Morris 42 |
Hinckley 42 Competition |
Rustler 42 |
Swan 42 |
Tartan 42 |
Valiant 42 |
| Dimensions |
| LOA |
42.0 |
42.0 |
42.0 |
42.0 |
42.0 |
42.0 |
| LWL |
33.5 |
32.0 |
33.5 |
33.8 |
32.0 |
34.5 |
| Beam |
12.5 |
12.2 |
13.3 |
13.0 |
12.3 |
12.8 |
| Displacement |
19 |
21 |
26 |
22 |
22 |
24 |
| Ballast |
8 |
— |
10 |
9 |
9 |
9 |
| Sail Area |
758 |
921 |
950 |
802 |
758 |
849 |
| Performance |
| PHRF |
86 |
— |
— |
78 |
114 |
138 |
| SA/Disp |
16.9 |
19.1 |
17.4 |
16.4 |
15.5 |
16.1 |
| Bal/Disp |
45.4 |
— |
— |
41.8 |
— |
— |
| Comfort |
28.7 |
33.9 |
35.4 |
30.9 |
34.5 |
34.9 |
| Capsize |
1.87 |
1.76 |
1.80 |
1.85 |
1.75 |
1.76 |
| Hull Speed |
7.8 |
7.6 |
7.8 |
7.8 |
7.6 |
7.9 |