Delta 31 vs Newport 31
How do the Delta 31 and Newport 31 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Delta 31 | Delta 31 | Newport 31 | |
|---|---|---|
| Length overall | 30.7 ft9.35 m | 30.7 ft9.35 m |
| Waterline length | 24.9 ft7.60 m | 27.0 ft8.23 m |
| Beam | 10.0 ft3.04 m | 10.5 ft3.20 m |
| Draft | 5.9 ft1.80 m | 5.2 ft1.57 m |
| Displacement | 8,598 lb3,900 kg | 8,500 lb3,856 kg |
| Ballast | 3,505 lb1,590 kg | 2,600 lb1,179 kg |
| Sail area | 436 ft²40.5 m² | 447 ft²41.5 m² |
| SA / Displacement | 16.62 | 17.17 |
| Displacement / Length | 248 | 193 |
| Comfort ratio | 23.3 | 20.4 |
| Capsize screening | 1.95 | 2.06 |
| Hull speed (kn) | 6.7 | 7.0 |
Delta 31 vs Newport 31: the short version
- The Delta 31 and Newport 31 are close in length (30.7 ft9.35 m vs 30.7 ft9.35 m ).
- On sail area/displacement the Newport 31 carries the more powerful rig (17.2 vs 16.6), favouring lighter-air performance.
- The Delta 31 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Delta 31 rates better for offshore work (1.95 vs 2.06).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.