The Secret Language of Ships

Tugboat crews routinely encounter what few of us will ever see. They easily read a vessel’s size, shape, function, and features, while deciphering at a glance the mysterious numbers, letters, and symbols on a ship’s hull. To non-mariners, the markings look like hieroglyphs. For those in the know, they speak volumes about a particular ship and also about the shipping industry.

via https://www.hakaimagazine.com/videos-visuals/the-secret-language-of-ships/