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OffbeatThe Reason Why Ships Are Often Painted Red on the Bottom

11:27  10 september  2019
11:27  10 september  2019 Source:   mentalfloss.com

NATO ships leave Halifax early because of Hurricane Dorian

NATO ships leave Halifax early because of Hurricane Dorian Hurricane Dorian is expected to make landfall in Atlantic Canada Saturday with winds of 100 kilometres per hour, driving rain and pounding coastal surf and as the region prepares for potential significant damage, NATO ships are also dealing with the storm. Eleven ships from various nations and over 2,500 international sailors were to be Halifax as part of a visit of NATO warships starting Friday The ships and crew are to take part in the Cutlass Fury exercise off the coast of Nova Scotia starting Sept. 9.

But the hulls are often painted red to maintain a nautical tradition. Collins also points out that the red may help observers gauge the load of a ship ’s cargo. There’s a 254nm UVC light featured on the board, which the company says “ is guaranteed to kill 99.99% of germs and bacteria" after a minute of

Why are ships painted red on the bottom ? If you’ve ever salvaged a sea vessel, you might have noticed that ship hulls are often red . If you haven’t dealt with a shipwreck—and chances are you haven’t—you may have still seen a red hull in pictures or in partial view at a shipyard.

If you’ve ever salvaged a sea vessel, you might have noticed that ship hulls are often red. If you haven’t dealt with a shipwreck—and chances are you haven’t—you may have still seen a red hull in pictures or in partial view at a shipyard. Since that portion of the ship is below the waterline, it seems strange to opt for a specific color.

The Reason Why Ships Are Often Painted Red on the Bottom © 75tiks/iStock via Getty Images The Reason Why Ships Are Often Painted Red on the Bottom

The reason is tradition. And worms.

In a piece for Jalopnik, Andrew P. Collins explains that early sailing ships protected themselves against barnacles and wood-eating worms by covering their hulls in a copper or copper oxide paint that acted as a biocide. The copper gave the paint a red tint. By reducing the muck that naturally collects on the hull, ships can maintain their structural integrity and avoid being weighed down by gunk like seaweed that would reduce drag.

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“ Why are ships red on the bottom ,” has been asked and answered many times but I really liked the animations in this particular explainer video. In the days of sail, shipwrights would use a copper coating or a lead paint with copper oxides in it as a biocide, to keep hulls as drag-free as possible.

Picture a cruise ship or container ship in the harbor. Did you happen to notice that the bottom of the hull is In early times, ships were mostly made of wood. That's why sailors had to cover their hulls - You also might’ve noticed numbers painted vertically on the side of the hull, usually toward the bow.

These days, biocides can be mixed with virtually any color of paint. But the hulls are often painted red to maintain a nautical tradition. Collins also points out that the red may help observers gauge the load of a ship’s cargo. The more weight on board, the lower in the water it will be. That's why you often see numbers positioned vertically on the side of the hull.

No matter what’s covering the hull, it’s never going to completely eliminate growth. Often, ports will prohibit ship owners from scraping hulls while docked, since ships traveling in outside waters might have picked up a non-native species of weed that could prove problematic in a new environment.

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