“All merchant ships have load lines painted on both the port and starboard sides amidships. In most cases these markings are welded or etched into the steel plates of the hull to ensure that they not be altered. The allowable freeboard of vessels is measured between the lowest point of the uppermost continuous deck and the waterline. The purpose of the various load lines is to show the amount of freeboard the ship must have under various conditions. These load lines make it obvious for anyone to see if a ship has been overloaded. The waterline or load line is calculated and verified by a regulating classification society, recognized by the authorities at the vessels homeport, shown on the stern and accepted by the ships appropriate country of origin. This marking system was invented in 1876 by Samuel Plimsoll. A politician and social reformer, Plimsoll directed his efforts against what were known as "coffin ships." Unseaworthy and overloaded vessels were frequently heavily insured by unscrupulous owners, who risked the lives of the crew.”