Heultonne Helgoland Ost
youtu.be
Ein Seezeichen, das über schwankenden Wasser- und Luftdruck in seinem Innern eine Pfeife antreibt. Diese Tonne kommt in jedem Kurs zum Sportbootführerschein ...
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The original was posted on /r/submechanophobia by /u/Hagebuddne3000 on 2024-10-15 08:10:17+00:00.

I don’t know if it scratches the right itch here, but the mere thought of being on open water and hearing this sound, especially in the dark or being around it in the water causes discomfort.