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Mainsail (GR-3)

The GR-3 Mainsail was designed in the build up to the 2008 Olympic Games and has proved to be devastating throughout the whole wind range.This bi-radial sail is manufactured from Dacron 4.46 Polykote.

Mainsail standard features:

  • Class insignia
  • Sail numbers
  • Epoxy battens
  • Vision window
  • Spreader window
  • Leech line
  • Leech tell tales
  • Long roll bag
  • ISAF in house measurement
  • Class royalty label
For prices and more information contact our Yngling Experts or your

Jib (APJ-1) New

Wind Range 8-18 knots

The APJ-1 is a new sail for 2013, and is a development of the successful QLR-3. It is designed for medium conditions as an all purpose headsail. Flatter than the QLR-3, it is a great sail in flat water and when the boat has enough power to get the crew hiking allowing the team to sail higher and faster than before. Using the same cross cut layout as the QLR-3 with curved foot seam it is build from DP 180 HTP+ for superior shape holding performance.

Jib standard features:

  • Popper hanks
  • Leech line
  • Vision windows
  • Leech tell tales
  • Trim tell tales
  • Long roll bag
  • ISAF in house measurement
  • Class royalty label
For prices and more information contact our Yngling Experts or your

Jib (QLR-3)

Wind Range 0-16 knots

The QLR-3 has been designed for light to medium conditions, the sail gives power and punch to the boat whilst maintaining great height. This cross cut sail is manufactured from Dacron 3.8 Polykote and uses a curved foot seam to get the shape all the way down into the tack of the sail while maintaining maximum strength in the right direction.

Jib standard features:

  • Popper hanks
  • Leech line
  • Vision window
  • Leech tell tales
  • Trim tell tales
  • Long roll bag
  • ISAF in house measurement
  • Class royalty label
For prices and more information contact our Yngling Experts or your

Jib (H-5)

Wind Range 14+ knots

The H-5 is our medium heavy jib and crosses over perfectly with the QLR-3. This cross cut sail is manufactured from Dacron 4.46 Polykote.

Jib standard features:

  • Popper hanks
  • Leech line
  • Vision window
  • Leech tell tales
  • Trim tell tales
  • Long roll bag
  • ISAF in house measurement
  • Class royalty label
For prices and more information contact our Yngling Experts or your

Spinnaker (G-1)

The G-1 is a further development from the B-7. It is designed as an all-round spinnaker with a deeper head section than traditional Yngling spinnakers.this full radial sail is manufactued in a combination of Superkote 75 & Dynakote 75.

Spinnaker standard features:

  • Sail numbers
  • Sail bag
  • Class royalty label
  • ISAF in house measurement
  • Stock colours
For prices and more information contact our Yngling Experts or your


The purpose of this tuning-guide is to give our clients in the Yngling class some guidelines on how to get the most out of their North Sails.

The tuning guide is made by Mads Christensen, tripple World Champion from Denmark and Arne Kristian Dahl from Norway.

Follow the guidelines, but always experiment and try finding your own trim. The weight of the crew, the balance of the boat, the stiffness of the mast together with specific local wind and sea conditions all have influence on the fastest and final trim.

Mast Trim

Before stepping the mast in the boat, some very important measurements have to be made to follow this tuning guide.

1. The length and angle of the spreaders are important to the shape of the main, because they help to control the bend of the mast and thereby the tension of the forestay. The length of the spreaders is measured from the side of the mast to where the shroud passes the spreader. It is measured along the middle of the spreader

2. Lead the upper shrouds and forestay along the mast, the upper have to be out of the spreader tips. Pull them as hard as you can and put a mark on all three wires at the height of the black mark at the gooseneck. These three marks are now used to check if the mast is straight from side to side in the boat, and to check the mast rake. The mast is then stepped.

3. The foot of the mast is placed so that the distance between the centre of the forestay pin to the front edge of the mast is 1,925 m.

4. Control that the distance from the top of the gooseneck mark to the deck measured along the side of the mast is 50 cm. Any possible difference should be adjusted when setting the forestay in the next step.

5. The mast rake is set so that the distance from the mark on the forestay to deck measured along the forestay is 1,08 m.

6. Now that the correct mast rake has been set, control that the mast rest on the full surface. If this is not the case, the pressure on the rig will become uneven and the forestay unsteady.

7. The marks on the top shrouds (from step 2) are now used to control if the mast is placed in the middle of the boat. This is done best by measuring the distance from the mark to the deck. This should be the same on both sides.

8. Many different tension-meters are used to measure rig-tension. Even tension-meters of the same kind tend to vary quite a lot. To give you an idea of the different measurements, we have used a tension-meter where there figures can be converted into kilos. Light wind 50 kg, medium wind 120 kg, strong winds 180 kg and very strong winds 230 kg.

9. The bottom shrouds are tensioned, so that the mast is completely straight in the boat up to 20-22 knots. From here on tighten them till the mast drops 5-10 cm off to leeward at the forestay fixture - the exact measure depending on crew weight.


1. Sheeting the main 
The mainsheet is the most important factor when trimming the main. Even minor adjustments can have a big effect on speed and pointing. If the sail is sheeted hard the leech will close more and increase rudder pressure, but the pointing ability will be improved. This can be used in middle air and flat water as long as the boat can be hiked flat. In light wind the mainsheet is eased so that the tell-tale by the topbatten flies straight aft. In heavy winds the mainsheet is pulled very tight and the backstay is pulled until the boat becomes light on the rudder again. As the waves increase more twist is needed to facilitate steering. At the same time it improves speed and hereby pointing. As a thumb rule trim the aft part of the topbatten parallel to the boom in all wind strengths.

2. Outhaul
The outhaul is also an important factor when trimming as it controls the draft in the bottom of the mainsail. In light winds (0-4 knots) the sail should be 4 cm from the mark. In a little more wind (4-10 knots) about 2 cm from the mark and in more wind than this pull the sail all the way to the mark.

3. Cunningham
Avoid using the cunningham in light winds. In middle winds pull only so much so that the wrinkles disappear. In winds above 14 knots pull the cunningham hard to open the leech and the draft forward.

4. Backstay
The backstay has two functions: To control mainsail depth and to control forestay sag.
This means that a tighter backstay flattens and opens the mainsail, gives less forestay sag and hereby a flatter jib. We have put marks on our backstay every 5 cm, so we can return to good trim after mark roundings etc.

5. Kicking Strap
The kicking strap is used upwind in heavy winds to bend the mast and hereby opening the sail in the bottom part. It also keeps the leech from opening too much when easing the mainsheet in the gusts. Never use the kicking strap upwind in less than 16 knots. Remember always to ease the kicker before going downwind to prevent the boom from breaking.

When reaching, set the kicking strap so that the aft part of the top batten is kept parallel to the boom.


1. Jib Lead
As a general rule, set the jib lead at a distance of 2,00 m from the forestay pin to the centre of the block. The jib shall luff evenly along the luff of the sail. This means that the telltales should break evenly. In light air we sheet forward to 1,88 m from the forestay pin, in heavy air 2,03 m.

2. Halyard tension
Never over-tighten the halyard as this will move the draft to far forward. Pull as much as to remove the creases, but not more. In light winds leave some creases at the luff as this will cause the draft to move aft, thereby increasing depth.


The height of the spinnaker pole on the mast should be 1,15 m over the cabin top roof. The pole is kept a little over horizontal in most conditions. Our G radient spinnaker is designed for this. In light winds the pole height is adjusted to keep the clews at the same height to get the best angle of attack on the windward leech and keeping the leeward leech open. In heavy winds on a tight reach, the spinnaker pole should at no time be closer to the forestay than 30 cm to prevent the boat from coming out of control.

If you have any questions regarding trim or Yngling sailing in general, please contact Mads Christensen or Theis Palm.

Good luck on the water!

Main & Jib Batten Sets

300mm (12") Sail Numbers & Letters

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

Contact the Yngling Experts:
Joost Houweling
+31 365 460 190 Work
+31 622 798462 Mobile
Ruairidh Scott
+44 (0)1329 443 430 Work
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