The Mirage 27 Perry 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.
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 21.7′, the Mirage 27 Perry tops out around 6.2 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √21.7′ LWL = 6.2 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
16.7
Moderate sail power — a capable coastal cruiser, not overpowered.
Ballast / Displacement
42.3%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
228
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
17.6
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.14
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
716lbs
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
17.6
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
2.14
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 Mirage 27 Perry sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
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 (6.2 kts),
SA/D (16.7), 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 Mirage 27 Perry — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–22 kts
22–32 kts
32+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–22 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
22–32 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
32+ 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 Mirage 27 Perry.
|
Mirage 27 Perry |
Ajax 28 |
Aloha 85 |
Cc 27 Mk Iv |
S2 86 |
Tanzer 85 |
| Dimensions |
| LOA |
27.9 |
28.0 |
28.0 |
27.9 |
28.0 |
27.9 |
| LWL |
21.7 |
23.2 |
24.5 |
22.9 |
22.5 |
23.8 |
| Beam |
9.3 |
9.0 |
9.4 |
9.2 |
9.5 |
9.5 |
| Displacement |
5 |
6 |
6 |
5 |
7 |
7 |
| Ballast |
2 |
2 |
2 |
2 |
3 |
3 |
| Sail Area |
313 |
364 |
395 |
361 |
390 |
— |
| Performance |
| PHRF |
— |
186 |
— |
— |
— |
— |
| SA/Disp |
16.7 |
17.3 |
17.8 |
18.6 |
16.2 |
— |
| Bal/Disp |
42.3 |
43.6 |
40.7 |
38.5 |
— |
40.5 |
| Comfort |
17.6 |
20.9 |
20.6 |
18.3 |
24.2 |
— |
| Capsize |
2.14 |
1.96 |
2.00 |
2.08 |
1.94 |
— |
| Hull Speed |
6.2 |
6.5 |
6.6 |
6.4 |
6.4 |
— |