Wave sail 2025: Severne Blade in the test - strong wind sails without limits

Despite its five battens, the Blade still plays in the league of the lightest wave sails. Traditionally, the sail has a higher aspect ratio, with a longer luff and rather short boom - in an emergency, even a 400 mast could still be used, but the 370 remains the clear recommendation. The equipment is inconspicuous, but by no means fluttery. The trim pulley has been optimised for the Severne Cyclops extension, with all standard extensions there is one wheel less. However, if you remove the red wheel in the centre, the sail can be rigged normally.

Watch the video for all the features & details of the Severne Blade!

Nothing flutters, nothing disturbs

The Blade works best with a slight loose leech between the upper two battens, moderate tension on the boom is also sufficient to elicit a large wind range from the sail. In normal trim, the Blade gets up to speed very well. It pulls enough profile out of the mast sleeve and stabilises itself so that you immediately find the angle of attack to the wind - ideal for looking for suitable ramps on the way through the surf. The five-batten concept is also expected to ignore stronger gusts well, pressure point migration is not an issue, although four batten wave sails of this size are now also at eye level in this respect.

The great thing about the Blade is that it retains its light basic feel over a maximum wind range. Nothing warps, nothing flutters, the Blade doesn't get baggy or even heavy, even if you could have ridden a sail size smaller! In addition, trim adjustments are hardly necessary. It is also so user-friendly on the wave: it is neither extremely powerful in the turn, nor completely anaemic and neutral, but offers a good mix of both extremes, which should actually suit 99 per cent of all wave surfers. This makes it easy to generate the necessary speed for powerful cutbacks on the wave, yet the Blade is playful enough to not set any limits on rotations and wave moves, even for experienced wave surfers.

surf's summary of the Severne Blade 4.5

The target group for the Blade is also as large as possible this year, as the sail combines good planing power with plenty of control and easy handling. This makes the model just as suitable in mast-high surf as it is as an agile manoeuvring sail for jumping around and jibing or for strong winds on flat water.

Handling, wind range & control
Long extension necessary
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Technical data Severne Blade 4.5

• Sail weight: 2.77 kg*
• Mast weight: 1.22 kg*
• sleeve opening: 93-153 cm*
• Mast used: Severne Red 370 RDM (100 % carbon)
• Price: 987 Euro
• Info under severnesails.com

*surf measurement

Severne Blade: Available sizes and data

Click here for an overview of all tested sails and the type recommendation!