The Swarbrick 80 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.
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 23.3′, the Swarbrick 80 tops out around 6.5 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √23.3′ LWL = 6.5 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
24.2
Performance-oriented — carries a lot of canvas for its weight.
Ballast / Displacement
39.3%
Stiff enough to carry a big genoa comfortably into moderate breeze.
Displacement / Length
109
Ultralight — responsive and fast, but carries less stores.
Comfort Ratio
10.8
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.44
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
737lbs
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
10.8
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
2.44
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 Swarbrick 80 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
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° |
3.0 |
3.9 |
4.3 |
4.5 |
| Close Reach60° |
3.7 |
4.7 |
5.2 |
5.4 |
| Beam Reach90° |
4.5 |
5.7 |
6.4 |
6.9 |
| Broad Reach120–135° |
4.2 |
5.3 |
5.9 |
6.4 |
| Run150–180° |
3.3 |
4.2 |
4.7 |
4.9 |
These are simplified estimates based on hull speed (6.5 kts),
SA/D (24.2), 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 Swarbrick 80 — 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 Swarbrick 80.
|
Swarbrick 80 |
First 27 Beneteau |
Marieholm 26 |
Pearson 26 One Design |
Sonata 26 |
Tanzer 26 |
| Dimensions |
| LOA |
26.3 |
26.2 |
26.3 |
26.2 |
26.3 |
26.3 |
| LWL |
23.3 |
21.8 |
20.2 |
21.7 |
19.8 |
22.5 |
| Beam |
8.9 |
9.8 |
7.2 |
8.7 |
8.2 |
8.7 |
| Displacement |
3 |
5 |
5 |
5 |
2 |
4 |
| Ballast |
1 |
1 |
2 |
2 |
500 |
1 |
| Sail Area |
320 |
306 |
291 |
321 |
277 |
282 |
| Performance |
| PHRF |
— |
— |
— |
— |
— |
216 |
| SA/Disp |
24.2 |
16.2 |
15.0 |
17.2 |
22.3 |
17.0 |
| Bal/Disp |
39.3 |
36.0 |
— |
42.3 |
— |
44.8 |
| Comfort |
10.8 |
16.8 |
27.8 |
19.7 |
12.2 |
16.0 |
| Capsize |
2.44 |
2.26 |
1.64 |
2.00 |
2.32 |
2.13 |
| Hull Speed |
6.5 |
6.3 |
6.0 |
6.2 |
6.0 |
6.4 |