GA Sails Cosmic 5.7 Windsurf Sail - Freerace Power With 7 Battens and 2 Cambers

GA Sails Cosmic 5.7 Windsurf Sail combines a 7 batten frame with 2 mini cambers for freerace control and speed. For progressing freeriders, the compact 5.7 m2 area and cambered profile help stabilize power in gusty flatwater conditions.

GA Sails Cosmic 5.7 Windsurf Sail targets freeriders who want cambered stability without stepping all the way into a full-on race rig. With a compact 5.7 m2 area paired to a 7 batten skeleton and 2 mini cambers, it is aimed at powered up sessions on flat to lightly choppy water where control and acceleration both matter.

Design And Construction Details

The Cosmic line from GA Sails is positioned as a freerace concept, blending race sail features such as cambers with a more manageable feel than full slalom designs. On the official GA Sails Cosmic overview, all sizes are described as featuring a 7 batten frame with 2 mini cambers, which also applies to the smaller end of the range.

Although the currently published factory table lists a 5.7 size rather than 5.5, that 5.7 m2 sail is the closest documented configuration for riders looking for a mid-size freerace option around the same surface area. According to the same Cosmic specs table, the 5.7 uses a luff length of 424 cm and a boom length of 182 cm, rigged on a 400 cm mast with IMCS 21.

The table also notes a mast base extension of 24 cm for the 5.7 size, confirming that it is intended to be rigged with a moderate extension rather than an extreme base setting. The design uses a fixed top, 7 battens, 2 cambers and is tuned for an RDM mast, which is stated in the same factory data. These numbers point to a freerace sail built with enough structure to hold shape under load without an overly complex rig.

Rigging Requirements And Compatibility

Set up requirements matter for riders choosing a freerace sail because mast and boom compatibility dictate whether existing hardware can be reused. GA Sails specifies that the Cosmic 5.7 is matched to a 400 cm mast with IMCS 21 on the Cosmic mast spec section. With a luff of 424 cm and base requirement of 24 cm, a typical 400 cm RDM mast plus a standard extension covers the needed range.

The same spec table lists the boom length for this size at 182 cm, so many freeride booms in the 150-200 cm range will fit without running to maximum extension. The RDM mast recommendation and 2 mini cambers sit between pure no-cam freeride rigs and full SDM race sails, making the sail more forgiving to uphaul, waterstart and maneuver than a pure slalom design while still benefiting from profile stability.

Positioning Among Freeride And Freerace Sails

Within GA Sails lineup, the Cosmic sits above pure no-cam freeride models in terms of structure and camber count. The brand describes the series on its general sail range overview as combining cambered power with jibe friendliness usually associated with no-cam designs. That positioning is reinforced by the 7 batten, 2 mini cam layout rather than the higher batten and cam counts used in full slalom sails.

Because GA Sails does not list a 5.5 m2 size in the current Cosmic spec sheet, riders using older 5.5 labeled sails will find the 5.7 size as the closest modern equivalent in surface area and use case. The 5.7s luff and boom lengths are slightly larger than a hypothetical 5.5, which translates into a bit more low-end pull while staying firmly in the mid-range sail class.

Comparison With Larger Cosmic Sizes

The same spec table for the Cosmic line shows how the 5.7 compares to larger sizes such as the 6.2 and 6.7. For the Cosmic 6.2, GA Sails lists a luff of 448 cm, boom length of 187 cm, mast length of 430 cm and IMCS 21, with a base extension of 18 cm on the official Cosmic 2025 archive. That shows an increase of 24 cm in luff and 5 cm in boom compared with the 5.7 specification.

The 6.7 size in that same table uses a luff of 465 cm and boom of 195 cm with a 430 cm mast, illustrating another step up in size and mast requirement within the line. For riders deciding between sizes, these numbers highlight that moving from 5.7 to 6.2 adds both surface area and rig length, potentially demanding a different mast, whereas staying around the 5.7 level can keep rig components more compact.

Use Case And Practical Verdict

For intermediate to advanced freeriders who sail powered conditions on flatwater or moderate chop, the GA Sails Cosmic 5.7 offers a blend of cambered stability and manageable dimensions. Its 424 cm luff and 182 cm boom length as stated on the Cosmic technical data keep it compact enough for active maneuvers and jibes, while the 7 batten, 2 mini cam skeleton is designed to hold a steady power profile.

Compared with larger Cosmic sizes like the 6.2 with its 448 cm luff and 187 cm boom, the 5.7 clearly occupies the higher-wind, more maneuverable slot in the range and caters to riders who prioritize control and handling over maximum low-end power. That makes it an option for sailors stepping up from no-cam freeride sails into cambered freerace equipment who still want a sail size that feels manageable in gusty, mid-strength wind bands.

Key Facts at a Glance

• Product: GA Sails Cosmic 5.7 Windsurf Sail
• Manufacturer: GA Sails
• Category: Freerace windsurf sail
• Model specs: Luff 424 cm, boom 182 cm, mast 400 cm, IMCS 21
• Rig structure: 7 battens with 2 mini cambers
• Recommended mast type: RDM mast, 400 cm length
• Target audience: Intermediate and advanced freeriders seeking cambered stability in mid-size sails