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Formosa 56 Ketch Sails Prices, sail sizes & rig dimensions

8 products cut or sized for this boatI 19.28 · J 7.16 · P 17.18 · E 5.94 mPrices checked 22 Oct 2026

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Every Formosa 56 Ketch price in your inbox: mainsail and genoa in each cloth, the spinnaker, sock, storm sails and canvas, plus the rig dimensions.

We email you the full price list and keep your details to answer questions about your boat. Privacy

Illustration of a Formosa 56 Ketch 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

Formosa 56 Ketch Mainsail

59.7 m² · P 17.18 m, E 5.94 m · Dimension-Polyant cloth
Cloth
Battens
Build time

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

A$7,095
inc GST
Illustration of a Formosa 56 Ketch 130% furling genoa from Sails.Online with a Captain Navy Sunbrella UV cover: cross-cut Dimension-Polyant woven DacronMade to measureIllustration. Yours is cut to this boat’s measurements.
Furling genoa · cut to your rig

Formosa 56 Ketch Furling Genoa

I 19.28 m, J 7.16 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$10,575.40
inc GST
Sized for this boat
Asymmetric spinnaker

Asymmetric Spinnaker · Size 13 (165 m²)

Matched to the Formosa 56 Ketch fore-triangle · 1.5 oz nylon · 11 colours
Spinnaker cloth colour: White
A$4,704.70
inc GST
Racing with a pole? Symmetric spinnakers from A$1,448.70
Fits the Size 13 spinnaker
Dousing sock

Spinnaker Dousing Sock · 19.4 m

UV-resistant ripstop nylon sock to hoist and douse the spinnaker from the deck
Outer tube
Inner tube
A$1,285.90
inc GST
Storm jib in storm orange DacronOSR max 18.6 m²
Storm jib

Storm Jib · Maxi (12 m²)

Storm orange Dacron · World Sailing OSR 4.26 sizing for this rig
Luff attachment
A$1,391.50
inc GST
OSR max 17.9 m²
Storm trysail

Storm Trysail · Maxi (15.5 m²)

Storm orange Dacron · no headboard or battens
Luff hardware
A$1,786.40
inc GST
Fits a 5.94 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 5.94 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

Not ready to buy yet?

Formosa 56 Ketch rig dimensions

MeasurementMetresFeet
I (fore-triangle height)19.2863.3
J (fore-triangle base)7.1623.5
P (mainsail luff)17.1856.4
E (mainsail foot)5.9419.5
Mainsail area59.7 m²643 ft²
Fore-triangle area69.0 m²743 ft²
Length overall (approx.)17.0756

We confirm your measurements before anything is cut.

Formosa 56 Ketch sails: questions

How much is a new mainsail for a Formosa 56 Ketch?

From A$7,095 in Dimension-Polyant Optimum Cruise with 3 leech battens and a full-length head batten, or A$7,360.10 with 4 full battens. C-Breeze, the long-life cloth, starts at A$9,248.80. Every mainsail is cut to the Formosa 56 Ketch rig (P 17.18 m, E 5.94 m) with two reefs.

What size genoa does a Formosa 56 Ketch need?

We build 110% to 150% LP for the standard rig (I 19.28 m, J 7.16 m). Pick a smaller genoa for a windy home port and a larger one for light-air sailing. Furling genoas start at A$9,056.30.

What size spinnaker fits a Formosa 56 Ketch?

A Size 13 (165 m²) asymmetric suits the Formosa 56 Ketch fore-triangle. It starts at A$4,704.70, or A$5,990.60 with a dousing sock.

What size storm jib and trysail fit a Formosa 56 Ketch?

The Offshore Special Regulations cap a storm jib at 5% of I squared (18.6 m² here) and a trysail at 17.5% of P × E (17.9 m²). That makes our Maxi (12 m²) storm jib and Maxi (15.5 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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