High Quality Content by WIKIPEDIA articles! The General Frank M. Coxe was a ferry was built for the United States Army to provide transportation services among several military facilities which ring California's San Francisco Bay. The 144-foot (44 m) was built in 1921 and, along with sister-ship General John McE. Hyde, was designed and built shortly after World War I to ferry army personnel to island bases in strategic harbors, in answer to the increasing military importance of the Pacific ports. Prior to the availability of the current system of bridges and highways in San Francisco Bay, mobility on the water was critical. It is estimated that the General Frank M. Coxe carried six million passengers during her military service.