"In 2017 alone, over ten billion tons of cargo was carried by the world’s fleet of over 50,000 registered ships. Each of those ships is unique – they fly the flag of over 100 different countries, hail from over a 1,000 and employee crew from every nation on earth. No two ships are identical except that, painted at the waterline of each of these ships, is the same simple mark, the International Load Line.
"The International Load Line is more commonly called a Plimsoll Mark in deference to Samuel Plimsoll, a British MP who took up the load line cause in the 1860s. Plimsoll lobbied for a Royal Commission on the seaworthiness ships in 1872, and in 1876 the United Kingdom Merchant Shipping Act made the load line mark compulsory on all British commercial vessels. In 1906, laws were passed requiring foreign ships visiting British ports to be marked with a load line and in 1930 the Load Line Convention mandated its use internationally.
Since 1872 the Plimsoll Mark has become so ubiquitous that this simple mark has inspired books, movie studios, and even popular athletic shoes. It is featured on numerous memorials to lost sailors and is etched in stone to mark Samuel Plimsoll’s grave."
* the complete story at http://gcaptain.com/us-company-claims-ownership-of-plimsoll-mark/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Gcaptain+%28gCaptain.com%29&goal=0_f50174ef03-6618852af8-139853573&mc_cid=6618852af8&mc_eid=1acf642b21
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