Made to measureIllustration. Yours is cut to this boat’s measurements.Cloth
Battens
Build time
Express +8%, economy 5.5% off. Shown as its own line in your cart.
A$1,425.60
inc GST
O'Day 27 Sails Prices, sail sizes & rig dimensions
7 products cut or sized for this boatI 10.67 · J 3.57 · P 8.99 · E 2.84 mPrices checked 22 Oct 2026
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Every O'Day 27 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.
Made to measureIllustration. Yours is cut to this boat’s measurements.Cloth
Size (LP)
UV cover colour: Captain Navy
Build time
Express +8%, economy 5.5% off. Shown as its own line in your cart.
A$1,984.40
inc GST
Sized for this boatRacing with a pole? Symmetric spinnakers from A$1,448.70
Asymmetric spinnaker
Asymmetric Spinnaker · Size 3 (50 m²)
Matched to the O'Day 27 fore-triangle · 0.9 oz nylon · 11 colours
Spinnaker cloth colour: White
Sock outer tube
Sock inner tube
The sock goes in your cart as its own line, linked to this spinnaker.
A$1,628
inc GST
Fits the Size 3 spinnaker
Dousing sock
Spinnaker Dousing Sock · 10.8 m
UV-resistant ripstop nylon sock to hoist and douse the spinnaker from the deck
Outer tube
Inner tube
A$665.50
inc GST
OSR max 5.7 m²Luff attachment
Luff tape relies on a foil, so it does not meet the OSR luff-attachment rule. Choose hanks or wrap luff for offshore racing.
A$621.50
inc GST
Fits a 2.84 m boom
Canvas
Colour
A$358.60
inc GST
Fits a 2.84 m boom
Canvas
Lazy jacks
Colour
A$713.90
inc GST
Custom quote
Storm trysail
Made to order
This rig’s P × E is 25.5 m², below our smallest stock trysail (Small needs 34.9 m²). We’ll quote one to fit.
Not ready to buy yet?
O'Day 27 rig dimensions
| Measurement | Metres | Feet |
|---|---|---|
| I (fore-triangle height) | 10.67 | 35.0 |
| J (fore-triangle base) | 3.57 | 11.7 |
| P (mainsail luff) | 8.99 | 29.5 |
| E (mainsail foot) | 2.84 | 9.3 |
| Mainsail area | 14.9 m² | 161 ft² |
| Fore-triangle area | 19.0 m² | 205 ft² |
| Length overall (approx.) | 8.23 | 27 |
We confirm your measurements before anything is cut.
O'Day 27 sails: questions
How much is a new mainsail for a O'Day 27?
From A$1,425.60 in Dimension-Polyant Optimum Cruise with 3 leech battens and a full-length head batten, or A$1,560.90 with 4 full battens. C-Breeze, the long-life cloth, starts at A$1,899.70. Every mainsail is cut to the O'Day 27 rig (P 8.99 m, E 2.84 m) with two reefs.
What size genoa does a O'Day 27 need?
We build 110% to 150% LP for the standard rig (I 10.67 m, J 3.57 m). Pick a smaller genoa for a windy home port and a larger one for light-air sailing. Furling genoas start at A$1,678.60.
What size spinnaker fits a O'Day 27?
A Size 3 (50 m²) asymmetric suits the O'Day 27 fore-triangle. It starts at A$1,628, or A$2,293.50 with a dousing sock.
What size storm jib and trysail fit a O'Day 27?
The Offshore Special Regulations cap a storm jib at 5% of I squared (5.7 m² here) and a trysail at 17.5% of P × E (4.5 m²). That makes our Small (4.5 m²) storm jib the right size. No stock trysail is small enough for this rig, so we quote one to fit.
How do I check my boat matches these measurements?
Measure I, J, P and E and compare them with the rig table. We confirm every measurement with you before the sail is cut.
From the same loft
Racing offshore or heading somewhere remote?
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.