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Westsail 42 Sails Prices, sail sizes & rig dimensions

8 products cut or sized for this boatI 15.09 · J 6.36 · P 13.34 · E 5.74 mPrices checked 22 Oct 2026
Illustration of a Westsail 42 cruising mainsail from Sails.Online: cross-cut Dimension-Polyant woven Dacron, 3 leech battens and 1 full-length head batten, 2 reefsMade to measureIllustration. Yours is cut to this boat’s measurements.
Mainsail · cut to your rig

Westsail 42 Mainsail

44.8 m² · P 13.34 m, E 5.74 m · Dimension-Polyant cloth
Cloth
Battens
Build time

Express +8%, economy 5.5% off. Shown as its own line in your cart.

A$4,725.60
inc GST
Illustration of a Westsail 42 130% furling genoa from Sails.Online: cross-cut Dimension-Polyant woven Dacron with Sunbrella UV coverMade to measureIllustration. Yours is cut to this boat’s measurements.
Furling genoa · cut to your rig

Westsail 42 Furling Genoa

I 15.09 m, J 6.36 m · UV cover included
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$6,119.30
inc GST
Sized for this boat
Asymmetric spinnaker

Asymmetric Spinnaker · Size 10 (118 m²)

Matched to the Westsail 42 fore-triangle · 1.5 oz nylon · 11 colours
Spinnaker cloth colour: White
A$3,338.50
inc GST
Racing with a pole? Symmetric spinnakers from A$1,448.70
Fits the Size 10 spinnaker
Dousing sock

Spinnaker Dousing Sock · 16.4 m

UV-resistant ripstop nylon sock to hoist and douse the spinnaker from the deck
Outer tube
Inner tube
A$1,051.60
inc GST
Storm jib in storm orange DacronOSR max 11.4 m²
Storm jib

Storm Jib · Extra Large (9.5 m²)

Storm orange Dacron · World Sailing OSR 4.26 sizing for this rig
Luff attachment
A$1,135.20
inc GST
OSR max 13.4 m²
Storm trysail

Storm Trysail · Large (10.8 m²)

Storm orange Dacron · no headboard or battens
Luff hardware
A$1,250.70
inc GST
Fits a 5.74 m boom
Boom cover

Boom Cover · 5.5–6.0 m

Zip at the mast, straps under the boom · 7 colours
Canvas
Colour
A$717.20
inc GST
Fits a 5.74 m boom
Stackpack

Stackpack (Lazy Bag) · 5.6–6.1 m

Battened sides, zipped top · 7 colours
Canvas
Lazy jacks
Colour
A$1,326.60
inc GST

Get the price list

Every Westsail 42 price on one printable page: mainsail and genoa in each cloth, the spinnaker, sock, storm sails and canvas, plus the rig dimensions.

The sheet opens in a new tab. We keep your details to answer questions about your boat. Privacy

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Westsail 42 rig dimensions

MeasurementMetresFeet
I (fore-triangle height)15.0949.5
J (fore-triangle base)6.3620.9
P (mainsail luff)13.3443.8
E (mainsail foot)5.7418.8
Mainsail area44.8 m²482 ft²
Fore-triangle area48.0 m²517 ft²
Length overall (approx.)12.8042

We confirm your measurements before anything is cut.

Westsail 42 sails: questions

How much is a new mainsail for a Westsail 42?

From A$4,725.60 in Dimension-Polyant Optimum Cruise with 3 leech battens and a full-length head batten, or A$4,980.80 with 4 full battens. C-Breeze, the long-life cloth, starts at A$6,227.10. Every mainsail is cut to the Westsail 42 rig (P 13.34 m, E 5.74 m) with two reefs.

What size genoa does a Westsail 42 need?

We build 110% to 150% LP for the standard rig (I 15.09 m, J 6.36 m). Pick a smaller genoa for a windy home port and a larger one for light-air sailing. Furling genoas start at A$5,177.70.

What size spinnaker fits a Westsail 42?

A Size 10 (118 m²) asymmetric suits the Westsail 42 fore-triangle. It starts at A$3,338.50, or A$4,390.10 with a dousing sock.

What size storm jib and trysail fit a Westsail 42?

The Offshore Special Regulations cap a storm jib at 5% of I squared (11.4 m² here) and a trysail at 17.5% of P × E (13.4 m²). That makes our Extra Large (9.5 m²) storm jib and Large (10.8 m²) trysail the right sizes.

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.

Race & bluewater sails at Kraken Sails
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