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Performance

Cobra 35 Performance

How the Cobra 35 performs on the water — racing handicap, sail-carrying power, stability and comfort.

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The Cobra 35 is aggressively canvassed for its weight, with a quick, snappy motion best suited to day sailing.

Hull Speed

The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.

7.3 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.

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
35.7
Performance-oriented — carries a lot of canvas for its weight.
Displacement / Length
85
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
5.2
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
4.22
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Hull Speed
7.3kts
Pounds/Inch Immersion
11lbs
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
5.2
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
4.22
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 Cobra 35 sits on the PHRF handicap spectrum — lower numbers mean faster boats.

Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Santana 35 120s/nm
Hunter 35 Legend 147s/nm
Oday 35 149s/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° 3.4 4.4 4.9 5.1
Close Reach60° 4.2 5.3 5.9 6.1
Beam Reach90° 5.1 6.5 7.2 7.8
Broad Reach120–135° 4.7 6.0 6.7 7.2
Run150–180° 3.8 4.8 5.3 5.6
These are simplified estimates based on hull speed (7.3 kts), SA/D (35.7), 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 Cobra 35 — based on sail area, ballast, and displacement characteristics.

Ghost
Sweet Spot
Reef
Heavy
0–5 kts 5–16 kts 16–24 kts 24+ kts
Ghosting
0–5 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
5–16 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
16–24 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
24+ 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 Cobra 35.

Cobra 35 Hunter 35 Legend Oday 35 Packet Cat 35 Island Packet Santana 35 Victory 35 Cat
Dimensions
LOA 35.0 35.0 35.0 35.0 35.0 35.0
LWL — 29.0 28.8 31.0 26.5 34.7
Beam 18.0 12.0 11.3 15.0 11.9 16.0
Displacement 5 13 11 12 8 9
Ballast — 5 4 — 3 —
Sail Area 650 587 524 735 550 620
Performance
PHRF — 147 149 — 120 —
SA/Disp 35.7 17.0 16.5 — 21.2 —
Bal/Disp — 40.0 — — — —
Comfort 5.2 22.3 23.1 16.2 16.7 10.4
Capsize 4.22 2.05 2.00 2.59 2.34 3.03
Hull Speed 7.3 7.3 7.2 7.5 6.9 7.9