GA Sails Cosmic 5.7, freerace windsurf sail

GA Sails Cosmic 5.7 Windsurf Sail - 424 cm Luff

Published on 09/24/2026 at 08:20 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

GA Sails Cosmic 5.7 uses seven battens, two mini cambers, and a 400 cm RDM mast with IMCS 21. The freerace sail also specifies a 182 cm boom.

Fotorealistische Studioansicht von Windsurfsegel in neutraler Produktdarstellung — Fotorealistische Studioaufnahme von Windsurfsegel zum Thema Gaastra Cosmic Windsurf Segel, klare Lichtfuehrung, Illustration mit AI erstellt.

GA Sails Cosmic 5.7 is a freerace windsurf sail built around a compact 5.7-square-meter rig. Its setup combines a 424 cm luff, a 182 cm boom, and a 400 cm RDM mast with IMCS 21, giving the sail a defined equipment profile for mid-size freeride boards.

Rigging Dimensions And Setup

The manufacturer lists a 424 cm luff and 182 cm boom for the 5.7 size, with a 400 cm mast, IMCS 21, and a 24 cm base requirement. The table also identifies a fixed top and RDM mast diameter in this size.The official Cosmic specifications document these rigging values.

The 5.7 version uses 7 battens and 2 mini cambers. GA Sails describes the mini-camber layout as a way to support a cambered profile while retaining smoother rotation than a full race sail.

Freerace Design Details

GA Sails places the Cosmic in its freerace range, with a race-inspired outline and a wide foot. The design also uses a continuous radial panel layout on the 2026 sail, with panels arranged along the sail's load paths.

A multi-material mast sleeve combines a 2-ply center section with traditional sleeve cloth. The sail also includes a cross-batten concept, a moderate-tension profile, and a fixed top, all listed as part of the Cosmic construction.

How The 5.7 Fits

The 5.7 is the smallest size listed in the current Cosmic technical table, while the range continues through 6.2, 6.7, 7.2, 7.7, 8.3, and 9.0. That places the 5.7 below the larger SDM-based sizes in the lineup.

Compared with the 6.2, the 5.7 uses a shorter 400 cm mast instead of 430 cm and an RDM setup instead of SDM. Its 182 cm boom measurement is also shorter than the 187 cm figure listed for the 6.2.

Use Case And Compatibility

The model suits windsurfers building a freerace rig around a 400 cm RDM mast with IMCS 21. The 424 cm luff and 24 cm base requirement should be matched to an extension and mast system that meet those specifications.

The 7-batten, 2-mini-camber construction favors a supported sail profile and acceleration-focused freeride setup. The main compatibility limits are the required RDM mast type, fixed top, 400 cm mast length, and the exact 5.7 rigging dimensions.