These vessels were larger, had a greater passenger capacity, and a broader sense of individuality in their respective companies than the more modern tenders seen today.
Before the technologies that allow submarines and destroyers to operate independently matured by the latter half of the 20th century (and significantly during the Second World War), they were heavily dependent upon tenders to perform most maintenance and supply.
Naval tenders fell out of use during the late 20th century, as the speed and range of warships increased (reducing the need for advanced basing).
As a result of the settlement of lawsuits over the Suisun Bay Reserve Fleet, the U.S. Navy and MARAD are engaged in an aggressive disposal program that will scrap all of those ships by 2017.
Under the traditional Navy classification, both ships should be reclassified as AR (Auxiliary Repair), however since now operated by the MSC it is doubtful such a reassignment will occur.
Emory S. Land is forward deployed in the Indian Ocean at Diego Garcia while Frank Cable is forward-deployed in the Pacific at Polaris Point, Apra Harbor, Guam.