The Mumm 36 is aggressively canvassed for its weight, with a quick, snappy motion best suited to day sailing, 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 31.8′, the Mumm 36 tops out around 7.6 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √31.8′ 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.
PHRF Rating
45s/nm
Performance racer — quick around the cans and offshore.
SA / Displacement
25.5
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
42.9%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
114
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
14.2
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.36
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
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
14.2
Quick, snappy motion — better for day sails and racing than long passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
2.36
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
PHRF Fleet Position
Where the Mumm 36 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Mumm 36
45s/nm
Performance racer — quick around the cans and offshore.
J/109
78s/nm
Dehler 36 Sq
81s/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° |
3.6 |
4.5 |
5.0 |
5.2 |
| Close Reach60° |
4.3 |
5.4 |
6.1 |
6.3 |
| Beam Reach90° |
5.3 |
6.7 |
7.5 |
8.1 |
| Broad Reach120–135° |
4.9 |
6.2 |
6.9 |
7.5 |
| Run150–180° |
3.9 |
4.9 |
5.5 |
5.7 |
These are simplified estimates based on hull speed (7.6 kts),
SA/D (25.5), 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 Mumm 36 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–5 kts
5–18 kts
18–28 kts
28+ kts
Ghosting
0–5 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
5–18 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
18–28 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 Mumm 36.
|
Mumm 36 |
Centurion 36 |
Dehler 36 Sq |
First 36S7 Beneteau |
J/109 |
J36 Classic |
| Dimensions |
| LOA |
35.8 |
35.7 |
35.9 |
35.8 |
35.8 |
36.0 |
| LWL |
31.8 |
28.8 |
32.6 |
31.1 |
30.3 |
30.5 |
| Beam |
11.8 |
12.3 |
11.5 |
12.4 |
11.8 |
11.8 |
| Displacement |
8 |
16 |
14 |
11 |
11 |
10 |
| Ballast |
3 |
5 |
5 |
3 |
5 |
4 |
| Sail Area |
644 |
902 |
737 |
660 |
626 |
662 |
| Performance |
| PHRF |
45 |
— |
81 |
— |
78 |
— |
| SA/Disp |
25.5 |
22.7 |
20.3 |
20.6 |
18.6 |
22.1 |
| Bal/Disp |
42.9 |
33.6 |
36.9 |
31.2 |
43.5 |
— |
| Comfort |
14.2 |
28.4 |
25.1 |
19.4 |
28.1 |
19.1 |
| Capsize |
2.36 |
1.96 |
1.90 |
2.19 |
1.63 |
2.15 |
| Hull Speed |
7.6 |
7.2 |
7.7 |
7.5 |
8.6 |
7.4 |