Jonkers JS5 – Discovering the Namibian Sky

The latest flagship from Jonker Sailplanes, the JS5 Rey, has successfully completed its first flight in Namibia - in the world-famous thermal oasis of Bitterwasser. Thanks to excellent weather conditions, several 1000-kilometer flights have already been achieved.

With the JS5, Jonker Sailplanes sets new standards in the open class. The development focused on a lightweight structure for optimum climbing in weak thermals and exceptional glide performance at high speeds with a wingspan of 24.2 meters.


We are excited to see what record flights will be possible with this glider in the future!

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The 2025/26 Bitterwasser season is coming to an end

At around 2 p.m. on Tuesday, January 27, 2026, the first truck carrying one of our seven containers set off. This marked the end of another impressive gliding season in Bitterwasser.

Christmas in Bitterwasser – at 33°C and glorious sunshine

In Europe Christmas is usually associated with cold temperatures, early sunsets and, in the best case scenario, snow. In Bitterwasser, the world looks very different.