The Triangle One Design is aggressively canvassed for its weight, with acceptable motion comfort for coastal passages.
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 18.5′, the Triangle One Design tops out around 5.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √18.5′ LWL = 5.8 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
22.3
Performance-oriented — carries a lot of canvas for its weight.
Comfort Ratio
24.6
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Capsize Screening
1.75
Below the 2.0 offshore threshold — acceptable for ocean passages.
Pounds/Inch Immersion
496lbs
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
24.6
Acceptable coastal comfort — fine for weekends, notice the chop offshore.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
1.75
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 Triangle One Design sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser 150–210
Heavy Cruiser 210–300
Columbia 29
218s/nm
Rhodes Ranger 29
239s/nm
Hinckley 21
240s/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° |
2.6 |
3.3 |
3.7 |
3.9 |
| Close Reach60° |
3.2 |
4.0 |
4.5 |
4.7 |
| Beam Reach90° |
3.9 |
5.0 |
5.5 |
5.8 |
| Broad Reach120–135° |
3.6 |
4.6 |
5.1 |
5.3 |
| Run150–180° |
2.9 |
3.7 |
4.1 |
4.3 |
These are simplified estimates based on hull speed (5.8 kts),
SA/D (22.3), 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 Triangle One Design — 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 Triangle One Design.
|
Triangle One Design |
Cambridge Cadet |
Columbia 29 |
Hinckley 21 |
Rhodes Ranger 29 |
Yachting World Seahorse |
| Dimensions |
| LOA |
28.5 |
28.6 |
28.5 |
28.5 |
28.5 |
28.6 |
| LWL |
18.5 |
— |
22.5 |
21.0 |
20.0 |
25.3 |
| Beam |
7.5 |
8.6 |
8.0 |
8.0 |
8.0 |
8.3 |
| Displacement |
5 |
15 |
7 |
9 |
7 |
6 |
| Ballast |
2 |
4 |
3 |
3 |
2 |
2 |
| Sail Area |
407 |
— |
388 |
— |
328 |
366 |
| Performance |
| PHRF |
— |
— |
218 |
240 |
239 |
— |
| SA/Disp |
22.3 |
— |
16.4 |
— |
13.2 |
17.8 |
| Bal/Disp |
— |
29.0 |
42.2 |
34.8 |
— |
— |
| Comfort |
24.6 |
53.1 |
29.5 |
— |
34.2 |
21.0 |
| Capsize |
1.75 |
1.38 |
1.64 |
— |
1.60 |
1.84 |
| Hull Speed |
5.8 |
6.6 |
6.4 |
— |
6.0 |
6.7 |