SS Potrero del Llano
The SS Potrero del Llano was a Mexican oil tanker built in 1912, it served under the administration of Petróleos Mexicanos (Pemex for its acronym), it would be torpedoed by a U-boot off the coast of Florida, and it would also be one of several oil tankers sunk which would push the entry of Mexico into the Second World War on the Allied side.