Samuel Plimsoll (10 February 1824 – 3 June 1898) was a British MP best remembered for his campaign against the execrable practice by some shipping magnates of buying unseaworthy vessels, literally from the salvage yard, outfitting them with a crew, and then deliberately overloading them, but not before insuring them heavily against loss. Plimsoll insisted that markings be made on the hull of all vessels to indicate the maximum safe load.
According to NOAA, Plimsoll lines are still used today.
These posts are true to the best of my knowledge at the time of writing. I make no claims to their accuracy. The purpose is to inform, educate, amuse, and make people aware of causes and opportunities around the world. I also encourage civil debate in the comment section.