This is a navbox template for U.S. Navy PC-461-class submarine chasers. Because of the large number of ships of this class, the template has features that help to minimize the size of the template on article pages.
This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.
To change this template's initial visibility, the |state=parameter may be used:
{{PC-461 class submarine chaser|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
{{PC-461 class submarine chaser|state=expanded}} will show the template expanded, i.e. fully visible.