Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). 1/8th speed (15fps) and improved video performance because somehow Youtube cropped the last frames of the other videos (?) I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!

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Superyacht Cup Palma is delighted to announce that the J Class will be joining the fun at Europe’s longest running superyacht regatta in 2022. To accommodate the J Class, and after consultation with SYC’s race management partner the Real Club Náutico de Palma and a number of superyachts who had expressed an early interest in attending, the 2022 regatta will now be run from June 29 to July 2, a small move of a week from the earlier June 22-25 dates.

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The Wajer 38 S is as standard equipped with twin Volvo Penta IPS inboard engines, ensuring smooth rides and delivering superior quietness and maneuvrability. In addition, triple Mercury Verado outboards are optionally available. They provide thrilling acceleration and a top speed of 55 knots, and it is now possible to navigate in shallow water or even beach the boat. Both systems are controlled via a joystick, facilitating effortless control while docking, and feature a digital anchor that can maintain the yacht in place via GPS.

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How to Approach a Mooring in a Power Boat

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