OK Dinghy vs Spindrift 13
How do the OK Dinghy and Spindrift 13 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
OK Dinghy 
Spindrift 13 | OK Dinghy | Spindrift 13 | |
|---|---|---|
| Length overall | 13.1 ft4.00 m | 13.3 ft4.06 m |
| Waterline length | —— | —— |
| Beam | 4.7 ft1.42 m | 5.2 ft1.58 m |
| Draft | 3.0 ft0.91 m | 3.0 ft0.91 m |
| Displacement | 187 lb85 kg | 205 lb93 kg |
| Ballast | —— | —— |
| Sail area | —— | 100 ft²9.3 m² |
| SA / Displacement | — | 46.02 |
| Displacement / Length | — | — |
| Comfort ratio | — | — |
| Capsize screening | 3.26 | 3.51 |
| Hull speed (kn) | — | — |
OK Dinghy vs Spindrift 13: the short version
- The OK Dinghy and Spindrift 13 are close in length (13.1 ft4.00 m vs 13.3 ft4.06 m ).
- The Spindrift 13 is heavier, displacing about 10% more, which usually means a steadier but slower-to-accelerate hull.
- By the capsize screening formula the OK Dinghy rates better for offshore work (3.26 vs 3.51).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.