Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.8 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 25.5′, the Tartan 37 Hood tops out around 6.8 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √25.5′ LWL = 6.8 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Ballast / Displacement
28.8%
Light ballast — tends to be tender; reef earlier than the numbers suggest.
Displacement / Length
393
Heavy displacement — a slow, steady, seakindly hull.
Hull Speed
6.8kts
Pounds/Inch Immersion
6lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Tartan 37 Hood sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Soverel 37
Little Harbor 37
Tartan 37
Black Watch 37
How It Compares
Side-by-side with the boats most often cross-shopped against the Tartan 37 Hood.
| Tartan 37 Hood | Black Watch 37 | Irwin 37 1 | Little Harbor 37 | Soverel 37 | Tartan 37 | |
|---|---|---|---|---|---|---|
| Dimensions | ||||||
| LOA | 37.0 | 37.0 | 37.0 | 37.0 | 37.0 | 37.0 |
| LWL | 25.5 | 25.0 | 30.0 | 25.6 | 31.0 | 25.5 |
| Beam | 10.5 | 10.5 | 11.5 | 10.5 | 9.3 | 10.5 |
| Displacement | 14 | 15 | 18 | 19 | 12 | 14 |
| Ballast | 4 | 4 | 6 | 4 | 4 | 4 |
| Sail Area | — | 597 | 558 | 618 | — | 654 |
| Performance | ||||||
| PHRF | — | 177 | — | 171 | 168 | 174 |
| SA/Disp | — | 15.4 | 13.1 | 13.9 | — | 17.6 |
| Bal/Disp | 28.8 | 27.1 | 37.2 | — | 33.3 | — |
| Comfort | — | 36.6 | 33.5 | 44.3 | — | 34.0 |
| Capsize | — | 1.69 | 1.76 | 1.58 | — | 1.72 |
| Hull Speed | — | 6.7 | 7.3 | 6.8 | — | 6.8 |