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$1,643.40
inc GST
Thompson 7 Sails Prices, sail sizes & rig dimensions
7 products cut or sized for this boatI 8.73 · J 2.85 · P 9.20 · E 3.55 mPrices checked 22 Oct 2026
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$1,223.20
inc GST
Sized for this boatRacing with a pole? Symmetric spinnakers from A$1,448.70
Asymmetric spinnaker
Asymmetric Spinnaker · Size 0 (31 m²)
Matched to the Thompson 7 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$1,020.80
inc GST
Fits the Size 0 spinnaker
Dousing sock
Spinnaker Dousing Sock · 8.7 m
UV-resistant ripstop nylon sock to hoist and douse the spinnaker from the deck
Outer tube
Inner tube
A$524.70
inc GST
OSR max 3.8 m²Storm jib
Storm Jib · Extra Small (3 m²)
Storm orange Dacron · World Sailing OSR 4.26 sizing for this rig
Luff 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$433.40
inc GST
Fits a 3.55 m boom
Canvas
Colour
A$478.50
inc GST
Fits a 3.55 m boom
Canvas
Lazy jacks
Colour
A$816.20
inc GST
Custom quote
Storm trysail
Made to order
This rig’s P × E is 32.7 m², below our smallest stock trysail (Small needs 34.9 m²). We’ll quote one to fit.
Get the price list
Every Thompson 7 price on one printable page: mainsail and genoa in each cloth, the spinnaker, sock, storm sails and canvas, plus the rig dimensions.
Not ready to buy yet?
Thompson 7 rig dimensions
| Measurement | Metres | Feet |
|---|---|---|
| I (fore-triangle height) | 8.73 | 28.6 |
| J (fore-triangle base) | 2.85 | 9.4 |
| P (mainsail luff) | 9.20 | 30.2 |
| E (mainsail foot) | 3.55 | 11.6 |
| Mainsail area | 19.1 m² | 206 ft² |
| Fore-triangle area | 12.4 m² | 134 ft² |
| Length overall (approx.) | 7.01 | 23 |
We confirm your measurements before anything is cut.
Thompson 7 sails: questions
How much is a new mainsail for a Thompson 7?
From A$1,643.40 in Dimension-Polyant Optimum Cruise with 3 leech battens and a full-length head batten, or A$1,809.50 with 4 full battens. C-Breeze, the long-life cloth, starts at A$1,859. Every mainsail is cut to the Thompson 7 rig (P 9.20 m, E 3.55 m) with two reefs.
What size genoa does a Thompson 7 need?
We build 110% to 150% LP for the standard rig (I 8.73 m, J 2.85 m). Pick a smaller genoa for a windy home port and a larger one for light-air sailing. Furling genoas start at A$1,035.10.
What size spinnaker fits a Thompson 7?
A Size 0 (31 m²) asymmetric suits the Thompson 7 fore-triangle. It starts at A$1,020.80, or A$1,545.50 with a dousing sock.
What size storm jib and trysail fit a Thompson 7?
The Offshore Special Regulations cap a storm jib at 5% of I squared (3.8 m² here) and a trysail at 17.5% of P × E (5.7 m²). That makes our Extra Small (3 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.