The Seafarer 36C Sloop is modestly canvassed and unhurried, with a steady, comfortable ride offshore.
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 26.3′, the Seafarer 36C Sloop tops out around 6.9 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √26.3′ LWL = 6.9 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
13.1
Modestly canvassed — a comfortable, unhurried cruiser.
Ballast / Displacement
33.6%
Typical cruising ballast — balanced stability and motion underway.
Displacement / Length
404
Heavy displacement — a slow, steady, seakindly hull.
Comfort Ratio
37.7
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.66
Below the 2.0 offshore threshold — acceptable for ocean passages.
Pounds/Inch Immersion
985lbs
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
37.7
Good offshore comfort — steady enough for multi-day passages.
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 Seafarer 36C Sloop sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Lancer 36
131s/nm
Catalina 36
138s/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 |
4.2 |
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 (6.9 kts),
SA/D (13.1), 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 Seafarer 36C Sloop — 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 Seafarer 36C Sloop.
|
Seafarer 36C Sloop |
Catalina 36 |
Lancer 36 |
Oe 36 |
Ohlson 36 Mkii |
Pearson 365 |
| Dimensions |
| LOA |
36.3 |
36.3 |
36.2 |
36.3 |
36.3 |
36.4 |
| LWL |
26.3 |
30.3 |
29.0 |
27.7 |
25.7 |
30.0 |
| Beam |
10.5 |
11.9 |
11.8 |
10.3 |
9.7 |
11.4 |
| Displacement |
16 |
13 |
10 |
12 |
13 |
17 |
| Ballast |
5 |
6 |
4 |
5 |
— |
7 |
| Sail Area |
525 |
545 |
558 |
472 |
— |
— |
| Performance |
| PHRF |
— |
138 |
131 |
— |
— |
210 |
| SA/Disp |
13.1 |
15.4 |
18.7 |
13.9 |
— |
— |
| Bal/Disp |
33.6 |
44.4 |
38.1 |
— |
— |
41.2 |
| Comfort |
37.7 |
24.0 |
19.6 |
29.4 |
35.0 |
— |
| Capsize |
1.66 |
2.01 |
2.15 |
1.76 |
1.63 |
— |
| Hull Speed |
6.9 |
7.4 |
7.2 |
7.1 |
6.8 |
— |