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Why are Ships Painted Red Below the Waterline?
It’s fighting an invisible enemy
Have you ever been at a port and seen a huge cargo ship or a high-end cruise ship, and you saw one very unusual thing? Almost every large ship on the planet is painted red just below the waterline. It’s a stark, bold contrast, but why? Is it to frighten off sea animals? Is it camouflage for the sea? Or maybe it’s a general warning?
Aesthetics have nothing to do with the truth.
The solution is a captivating blend of historical naval battles, ingenious chemistry, and a defiant spirit of tradition. So, let’s take a look below the water lines and find out the true reason why ships have red bottoms all over the world today.
The red paint, like all other cultural traditions, must be traced back a few centuries to the era of wooden ships. It was a long and dangerous journey across the sea, and a slow-moving, wooden ship was a huge floating buffet for sea creatures back then.
As soon as a ship touched the water, it was filled with algae, seaweed, barnacles, and a dreaded tiny species known as shipworms that actually consumed the wooden hull.
This in marine terms, is called biofouling.
Now, a few barnacles might not sound like a big deal, but biofouling was a disaster…
