Knock

Knock is a windsurfing-focused spot associated with the Ems estuary near Emden, where conditions are dominated by tidal water and frontal winds. The area includes a small inland lake that’s described as safe and suitable for first steps, while the open estuary can become considerably more demanding due to strong tidal currents and added chop in NW wind. For wind, the prevailing pattern is driven by fronts, with wind directions commonly described around NW (and more broadly West/South-West from the regional pattern). Wind is typically framed in the 12–25 knots range, and spring/autumn fronts are described as relatively reliable. On sunny days in spring and summer, a mild sea-breeze reinforcement can occur in the afternoon, commonly between 1:00 PM and 6:00 PM. Safety is the main constraint. Multiple sources emphasize dangerous currents when water is running down (especially with strong NW winds) and strong tidal currents during ebb tide. There is also an operational risk from commercial shipping traffic and slippery stone stairs/shore access. Local guidance stresses staying clear of the main shipping lane, being cautious when water levels drop, and paying attention to tide timing for estuary riding. Kitesurfing is largely restricted in the estuary areas near Knock due to shipping lanes and nature reserve status, so the spot is best treated as a windsurfing destination. Facilities at the dike-side access include parking, toilets, and a restaurant; rescue is not presented as a standard lifeguard setup, so self-rescue readiness is important, with maritime rescue available via regional services.