Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
7.0 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 27.5′, the Islander Freeport 30B tops out around 7.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √27.5′ LWL = 7.0 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
Hull Speed
7.0kts
Pounds/Inch Immersion
1,320lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the Islander Freeport 30B sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Islander 36
Pearson 30
Catalina 30
Hunter 30
How It Compares
Side-by-side with the boats most often cross-shopped against the Islander Freeport 30B.
| Islander Freeport 30B | Catalina 30 | Hunter 30 | Islander 36 | Pearson 30 | |
|---|---|---|---|---|---|
| Dimensions | |||||
| LOA | 35.8 | 29.9 | 29.9 | 36.1 | 29.8 |
| LWL | 27.5 | 25.0 | 25.6 | 28.3 | 25.0 |
| Beam | 12.0 | 10.8 | 10.8 | 11.2 | 9.5 |
| Displacement | — | 10 | 9 | 13 | 8 |
| Ballast | — | 4 | 3 | 5 | 3 |
| Sail Area | — | 446 | 417 | 576 | 445 |
| Performance | |||||
| PHRF | — | 180 | 189 | 144 | 174 |
| SA/Disp | — | 15.2 | 14.5 | 16.4 | 17.4 |
| Bal/Disp | — | 41.2 | 39.4 | — | 42.8 |
| Comfort | — | 24.9 | 25.1 | 27.3 | 24.3 |
| Capsize | — | 2.00 | 1.91 | 1.88 | 1.88 |
| Hull Speed | 7.0 | 6.7 | 6.8 | 7.1 | 6.7 |