The Collaborative International Dictionary
Plimsoll's mark
Plimsoll's mark \Plim"soll's mark`\ (Naut.) A mark conspicuously painted on the port side of all British sea-going merchant vessels, to indicate the limit of submergence allowed by law; -- so called from Samuel Plimsoll, by whose efforts the act of Parliament to prevent overloading was procured.
Usage examples of "plimsoll's mark".
It seemed impossible that such puny objects could budge over forty-five thousand tons of dead weight, and yet slowly, imperceptibly at first, their combined forces of ten-thousand horsepower began to tell and soon a minute dog's bone of foam could be discerned curling around the Titanic's faded Plimsoll's mark.