. . . . . . . "Magnetism allows the building of frigates, the second-highest carrying capacity sea vessel. It is a prerequisite of electricity. It negates the effects of the Lighthouse and replaces sail units."@en . . . "Magnetism allows the building of frigates, the second-highest carrying capacity sea vessel. It is a prerequisite of electricity. It negates the effects of the Lighthouse and replaces sail units."@en . "Magnetism (Civ1)"@en .