Made to measureIllustration. Yours is cut to this boat’s measurements.Columbia 31 Mainsail
Express +8%, economy 5.5% off. Shown as its own line in your cart.
Every Columbia 31 price in your inbox: mainsail and genoa in each cloth, the spinnaker, sock, storm sails and canvas, plus the rig dimensions.
Made to measureIllustration. Yours is cut to this boat’s measurements.Express +8%, economy 5.5% off. Shown as its own line in your cart.
Made to measureIllustration. Yours is cut to this boat’s measurements.Express +8%, economy 5.5% off. Shown as its own line in your cart.
The sock goes in your cart as its own line, linked to this spinnaker.
OSR max 5.9 m²Luff tape relies on a foil, so it does not meet the OSR luff-attachment rule. Choose hanks or wrap luff for offshore racing.
Tell us your track size after you order.
| Measurement | Metres | Feet |
|---|---|---|
| I (fore-triangle height) | 10.82 | 35.5 |
| J (fore-triangle base) | 3.45 | 11.3 |
| P (mainsail luff) | 9.30 | 30.5 |
| E (mainsail foot) | 4.42 | 14.5 |
| Mainsail area | 24.0 m² | 259 ft² |
| Fore-triangle area | 18.7 m² | 201 ft² |
| Length overall (approx.) | 9.45 | 31 |
We confirm your measurements before anything is cut.
From A$2,296.80 in Dimension-Polyant Optimum Cruise with 3 leech battens and a full-length head batten, or A$2,498.10 with 4 full battens. C-Breeze, the long-life cloth, starts at A$3,058. Every mainsail is cut to the Columbia 31 rig (P 9.30 m, E 4.42 m) with two reefs.
We build 110% to 150% LP for the standard rig (I 10.82 m, J 3.45 m). Pick a smaller genoa for a windy home port and a larger one for light-air sailing. Furling genoas start at A$1,769.90.
A Size 2 (43 m²) asymmetric suits the Columbia 31 fore-triangle. It starts at A$1,406.90, or A$2,036.10 with a dousing sock.
The Offshore Special Regulations cap a storm jib at 5% of I squared (5.9 m² here) and a trysail at 17.5% of P × E (7.2 m²). That makes our Medium (5.7 m²) storm jib and Small (6.1 m²) trysail the right sizes.
Measure I, J, P and E and compare them with the rig table. We confirm every measurement with you before the sail is cut.
For a race programme, a Sydney to Hobart or a bluewater expedition, our sister loft Kraken Sails designs laminates, membrane sails and storm wardrobes for the hard end of sailing.