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Performance

Deltania 27 Performance

How the Deltania 27 performs on the water — racing handicap, sail-carrying power, stability and comfort.

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The Deltania 27 is moderately powered for comfortable coastal cruising, 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.

6.7 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
17.4
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
22.9%
Light ballast — tends to be tender; reef earlier than the numbers suggest.
Displacement / Length
135
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
15.8
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.03
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Hull Speed
6.7kts
Pounds/Inch Immersion
5lbs
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
15.8
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
2.03
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 Deltania 27 sits on the PHRF handicap spectrum — lower numbers mean faster boats.

Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Carrera 280 96s/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° 2.7 3.4 3.8 4.0
Close Reach60° 3.3 4.1 4.6 4.8
Beam Reach90° 4.0 5.0 5.6 6.1
Broad Reach120–135° 3.7 4.7 5.2 5.6
Run150–180° 3.0 3.7 4.2 4.3
These are simplified estimates based on hull speed (6.7 kts), SA/D (17.4), 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 Deltania 27 — based on sail area, ballast, and displacement characteristics.

Ghost
Sweet Spot
Reef
Heavy
0–7 kts 7–18 kts 18–26 kts 26+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–18 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
18–26 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
26+ 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 Deltania 27.

Deltania 27 Carrera 280 First 277 Beneteau Hallberg Rassy 29 Larsen 28 Regatta 290 Westerly
Dimensions
LOA 29.2 29.0 29.0 29.2 29.1 29.0
LWL — 26.5 27.2 23.8 26.9 23.0
Beam 8.5 9.5 9.8 9.3 8.7 9.9
Displacement 4 2 5 8 5 7
Ballast 1 1 — 3 2 3
Sail Area — 418 448 538 382 330
Performance
PHRF — 96 — — — —
SA/Disp 17.4 35.9 23.0 20.9 19.1 13.6
Bal/Disp 22.9 52.2 — 46.1 43.1 43.3
Comfort 15.8 7.2 14.6 26.2 17.9 22.6
Capsize 2.03 2.78 2.23 1.83 1.95 2.01
Hull Speed 6.7 6.9 7.0 6.5 7.0 6.4