The USS Machias (PF-53) was a United States Navy Tacoma-class frigate which later served in the Soviet Navy as EK-4 and the Japan Maritime Self-Defense Force as JDS Nara (PF-2), JDS Nara (PF-282) and YTE-8. The ship was laid down under a Maritime Commission contract as a Maritime Commission Type T.S2-S2-AQ1 hull on 8 April 1943 by Froemming Brothers, Inc., at Milwaukee, Wisconsin. It was launched on 22 August 1943 and commissioned on 29 March 1944.
Between World War II and the Vietnam War, those working in the construction of ships, or doing regular maintenance, repairs, overhauls and decommissions, were at the greatest risk of asbestos exposure. Boiler workers were exposed while maintaining and repairing asbestos insulation, and laggers and pipefitters were exposed while installing and repairing damaged pipe insulation. Depending upon the shipyard, workers performed their tasks on battleships, aircraft carriers, submarines, cruisers, destroyers, and auxiliary vessels.