Prospect 900 vs Thames Marine Mirage 29
How do the Prospect 900 and Thames Marine Mirage 29 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Prospect 900 
Thames Marine Mirage 29 | Prospect 900 | Thames Marine Mirage 29 | |
|---|---|---|
| Length overall | 28.8 ft8.79 m | 28.8 ft8.79 m |
| Waterline length | 22.4 ft6.83 m | 25.3 ft7.70 m |
| Beam | 9.2 ft2.80 m | 10.5 ft3.20 m |
| Draft | 4.9 ft1.50 m | 3.8 ft1.14 m |
| Displacement | 7,275 lb3,300 kg | 8,267 lb3,750 kg |
| Ballast | 3,086 lb1,400 kg | —— |
| Sail area | 291 ft²27.0 m² | 353 ft²32.8 m² |
| SA / Displacement | 12.40 | 13.81 |
| Displacement / Length | 288 | 229 |
| Comfort ratio | 24.1 | 21.2 |
| Capsize screening | 1.89 | 2.08 |
| Hull speed (kn) | 6.3 | 6.7 |
Prospect 900 vs Thames Marine Mirage 29: the short version
- The Prospect 900 and Thames Marine Mirage 29 are close in length (28.8 ft8.79 m vs 28.8 ft8.79 m ).
- The Thames Marine Mirage 29 is heavier, displacing about 14% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Thames Marine Mirage 29 carries the more powerful rig (13.8 vs 12.4), favouring lighter-air performance.
- The Prospect 900 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Prospect 900 rates better for offshore work (1.89 vs 2.08).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.