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The KS3 is the ONLY 3 batten wave sail you should consider. Since it was developed 5 years ago by Kauli Seadi, Jeffrey Henderson and Tom Hammerton, it has consistently proven itself as the undisputed finest and most respected 3 batten wave sail. Considered by many as one of the best wave sails regardless of number of battens. Three out of the last five Aloha Classic contests have been won by the KS3 sail in the pro division. It is the only 3 batten sail proven to be worthy at the highest level, and may be the best down the line wave sail in the world.

New for 2019 is the amazing Wave Vision window that is open all the way to the mast. The experience of wave riding with virtually no visual restrictions makes the 2019 a dramatic change form past designs. Oddly this feature is so helpful even on flat water as jibes and any maneuver become so much easier when you do not have to look through a "window". This is the most significant change in the KS3 since its inception.

The KS3 is powerful yet unbelievably stable as the three batten design has radically less sail momentum which leads to faster response times and improved feel. The result is a more explosive wave ride and quicker action in the air. The result for those not wave sailing is an amazing new type of sail that seemingly does not get overpowered and maintains a locked in feel under all wind conditions.

New for 2019 is our even lighter lightweight ROX Webbing sleeve that is nearly indestructible. Even a broken mast in the sail will rarely damage this new .055 mm thick amazing fabric.

In 2018 Jeffrey developed an amazing new batten SuperSkin® for all the 8mm battens that contains any failures allowing for mess free batten replacement with no sail damage. Now for 2019 the mini battens also get their own SuperSkin® reinforicing, eliminating shattered mini battens.

Newly designed top of the sail sleeve is softer allowing for the sail to be rolled even smaller.

The KS3 is the most powerful and direct sail in our line. It is also our best wave sail for larger sailors who now can use large size wave sails in heavy surf with no drawbacks.


Hard Core Wave
On-Shore Wave
Off Shore Wave
Soft wave
Light Wind

KS3 Sail Features

  • Jeffrey Henderson /Kauli Seadi design
  • Our lightest wave sail
  • Three full length battens with exclusive SuperSkin® reinforcing
  • 2x3mm "mini" battens with exclusive SuperSkin® reinforcing
  • Indestructible Ox Webbing UHMWPE luff sleeve
  • "S" bend batten de-power and shape stability system
  • New easy roll sleeve top
  • DP® Sailcloth "Flex" triple laminate luff top reinforcing
  • Single position 20mm stainless steel press clew ring
  • Huge new DP® Sailcloth SLAMLAM® window stays clear longer
  • DP® Sailcloth Technora® tack and clew reinforcing
  • Boom height markings printed inside and out the boom opening
  • Genuine sailmaker's leather chafe trim
  • Fully accessible mini-battens
  • Foot edge raised bead for maximum deck chafe resistance
  • Removable triple pulley downhaul in 316 Stainless and bronze
  • 900kg strength UHMWPE tack pulley webbing
  • Ribbed EVA mast pad with 5cm wide hook and loop closure


Size Luff Boom Ideal Mast Battens Weight (LB) Weight (KG)
3.1 319 136 340 3 5.3 2.4
3.4 347 143 340 3 5.6 2.5
3.7 348 149 340 3 5.7 2.6
4.0 365 155 340 3 5.9 2.7
4.3 382 159 370 3 6.1 2.8
4.6 389 165 370 3 6.3 2.9
4.9 407 165 400 3 6.7 3.1
5.2 416 171 400 3 7 3.2
5.5 422 174 400 3 7.3 3.3
5.8 437 181 430 3 7.4 3.4
6.1 453 186 430 3 7.5 3.4
6.4 461 189 430 3 7.6 3.5
6.7 465 191 430 3 7.9 3.6