The Rafiki 35 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 27.5′, the Rafiki 35 tops out around 7.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √27.5′ LWL = 7.0 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
13.0
Modestly canvassed — a comfortable, unhurried cruiser.
Ballast / Displacement
41.2%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
354
Heavy displacement — a slow, steady, seakindly hull.
Comfort Ratio
35.8
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.70
Below the 2.0 offshore threshold — acceptable for ocean passages.
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
35.8
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
1.70
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 Rafiki 35 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Cape Dory 33
174s/nm
Pacific Seacraft 34
192s/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° |
2.5 |
3.1 |
3.5 |
3.6 |
| Close Reach60° |
3.0 |
3.8 |
4.2 |
4.4 |
| Beam Reach90° |
3.7 |
4.6 |
5.2 |
5.4 |
| Broad Reach120–135° |
3.4 |
4.3 |
4.8 |
5.0 |
| Run150–180° |
2.7 |
3.4 |
3.8 |
4.0 |
These are simplified estimates based on hull speed (7.0 kts),
SA/D (13.0), 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 Rafiki 35 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–8 kts
8–24 kts
24–34 kts
34+ kts
Ghosting
0–8 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
8–24 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
24–34 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
34+ 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 Rafiki 35.
|
Rafiki 35 |
Bristol Channel Cutter |
Cape Dory 33 |
Pacific Seacraft 34 |
Rafiki 37 |
| Dimensions |
| LOA |
34.7 |
37.8 |
33.0 |
34.1 |
— |
| LWL |
27.5 |
26.3 |
24.5 |
26.2 |
— |
| Beam |
10.8 |
10.1 |
10.3 |
10.0 |
— |
| Displacement |
16 |
14 |
13 |
13 |
— |
| Ballast |
6 |
4 |
5 |
4 |
— |
| Sail Area |
525 |
673 |
546 |
533 |
— |
| Performance |
| PHRF |
— |
— |
174 |
192 |
— |
| SA/Disp |
13.0 |
18.6 |
15.6 |
15.1 |
— |
| Bal/Disp |
41.2 |
32.9 |
41.4 |
— |
— |
| Comfort |
35.8 |
33.6 |
34.2 |
34.0 |
— |
| Capsize |
1.70 |
1.68 |
1.73 |
1.68 |
— |
| Hull Speed |
7.0 |
6.9 |
6.6 |
6.9 |
— |