The Irwin 52 2 is moderately powered for comfortable coastal cruising, 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 46.0′, the Irwin 52 2 tops out around 9.1 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √46.0′ LWL = 9.1 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
14.5
Moderate sail power — a capable coastal cruiser, not overpowered.
Displacement / Length
204
Moderate — a good balance of speed and load-carrying ability.
Comfort Ratio
38.0
Good offshore comfort — steady enough for multi-day passages.
Capsize Screening
1.73
Below the 2.0 offshore threshold — acceptable for ocean passages.
SA/Disp (Calculated)
15.5
Computed from measured I/J/P/E rather than reported sail area.
Pounds/Inch Immersion
2lbs
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
38.0
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
1.73
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 Irwin 52 2 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Tayana 52
99s/nm
Irwin 52 4
105s/nm
Irwin 52
117s/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 |
4.2 |
4.7 |
4.9 |
| Close Reach60° |
4.1 |
5.1 |
5.7 |
6.0 |
| Beam Reach90° |
5.0 |
6.3 |
7.0 |
7.3 |
| Broad Reach120–135° |
4.6 |
5.8 |
6.5 |
6.8 |
| Run150–180° |
3.7 |
4.7 |
5.2 |
5.4 |
These are simplified estimates based on hull speed (9.1 kts),
SA/D (14.5), 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 Irwin 52 2 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–20 kts
20–28 kts
28+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–28 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
28+ 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 Irwin 52 2.
|
Irwin 52 2 |
Endeavour 52 |
Irwin 52 |
Irwin 52 3 |
Irwin 52 4 |
Tayana 52 |
| Dimensions |
| LOA |
52.0 |
52.3 |
52.0 |
52.0 |
52.0 |
52.4 |
| LWL |
46.0 |
42.3 |
44.0 |
44.0 |
44.0 |
42.1 |
| Beam |
15.3 |
15.0 |
15.3 |
15.3 |
15.3 |
15.0 |
| Displacement |
44 |
35 |
55 |
46 |
46 |
38 |
| Ballast |
— |
14 |
16 |
— |
— |
14 |
| Sail Area |
1 |
1 |
1 |
1 |
1 |
1 |
| Performance |
| PHRF |
— |
— |
117 |
— |
105 |
99 |
| SA/Disp |
14.5 |
16.7 |
15.2 |
14.6 |
17.7 |
16.3 |
| Bal/Disp |
— |
41.4 |
29.3 |
— |
— |
— |
| Comfort |
38.0 |
32.4 |
48.3 |
40.9 |
40.9 |
35.8 |
| Capsize |
1.73 |
1.84 |
1.62 |
1.71 |
1.71 |
1.78 |
| Hull Speed |
9.1 |
8.7 |
8.9 |
8.9 |
8.9 |
8.7 |