UK Inlands 1,2,3,4,5,6


UK Nationals 1,2
Ladies Nationals
Midland Area Champs
Inland Champs 1


Inland Champs 1
UK Nationals 1


Carnac 2014 2,3
Severnside Area Champs 1
Masters Champs 1, 1 Ladies
1 Grand, 1 Veteran


Inlands 1
Inlands 1 Lady
Inlands 1 Junior
Nationals 2


Richard Sadler Trophy 1,2,3

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Mainsail (SJ-4+)

The full radial SJ-4+ Championship winning Mainsail is an all purpose sail built to fit both the Proctor and Super Spar range of masts. It is manufactured from Dacron 4.46 Polykote.

Mainsail standard features:

  • Class insignia
  • Sail numbers
  • Epoxy battens
  • Vision windows
  • Leech tell tales
  • Leech line
  • Long roll bag
  • Class royalty label
For prices and more information contact our Enterprise Experts or your

Jib (FG-3)

The bi-radial FG-3 Jib is designed to complement the SJ-4+ Mainsail. It is a slightly flat jib which gives a good all round performance for inland or sea is manufactured from Dacron 4.46 Polykote.

Jib standard features:

  • Luff wire
  • Vision window
  • Trim tell tales
  • Long roll bag
  • Class royalty label
For prices and more information contact our Enterprise Experts or your

This tuning guide has been prepared to help you get the most out of your North Sails as quickly as possible. It is meant as a starting point only, as we cannot cover all options and techniques. Feel free to modify and experiment in small steps to find what suits you best. If you find a settings that really work well, please keep us informed.

Mast Preparation

Ensure all sheaves are free running and the rigging is clean prior to stepping the mast.


Spreader Angle:
Measure from spreader tip to tip.
Spreader Length: Measure from spreader tip to wall of mast.

Super Spar M2 Sleaved
780 mm

Spreader length

Proctor D+
760 mm

Spreader length


Rig Tension / Mast Rake

Rig tension is measured on the shrouds with a 3mm wire gauge. Mast rake is measured from top of mast to the centre of the transom. For sailing in all conditions the rig should be set up with Jib hoisted and tension fully on:
Rig Tension: 400lbs
Mast Rake: 6470mm

This should make the mast straight with no Mainsail hoisted.


Ensure the Mainsail is fully hoisted - halyards do stretch.


Battens should be left in the sail at all times and whilst not afloat, the sail should be rolled down the leech, parallel to the battens.


This is used to position draft in the sail. Do not use any Cunningham until  you become overpowered in heavy airs, then pull Cunningham on progressively harder as the breeze increases. This will move the draft of the sail forward in the top and de-power the upper leech.


Beating: In light and heavy airs the foot of the sail should be pulled tight. In medium airs, ease approximately 12mm.

Running: Keep the foot tight in all conditions.
Reaching: Ease fully in medium conditions, in light airs ease 25mm and in heavy airs pull out tight.


To find Jib lead position, follow the sheeting angle through the Jib clew. This should divide the Jib luff approximately in half. When sailing upwind in a Force 3, all the tell tales should break together. In medium/heavy airs, the Jib should be sheeted hard to maximise pointing ability.

In lighter conditions the Jib sheet needs to be eased approximately 12mm to keep the top of the leech open. Once a fairlead position has been found, use it in all conditions with very heavy airs, then move back 25mm. This will flatten the base of the Jib and open the leech, keeping the boat driving and on her feet.

Good luck on the water!

Sail Numbers & Letters

300mm (12”) Sail Letters & Numbers

Please contact us or your local North Loft or Agent to make your order.

Contact the Enterprise Experts:
Paul Hobson
+44 (0)1329 443430 Work
Paul Young
+44 (0) 1380 831138 Work
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