Tom Scott talked a bit about magnetic warships and the magnetic mines in one of his &quot;Things you might not know&quot; videos: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=LG-X23aVud0&amp;list=PL96C35uN7xGI9HGKHsArwxiOejecVyNem&amp;index=25" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=LG-X23aVud0&amp;list=PL96C35uN7x...</a>