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.
Usage
Before the categories on the article page, place this:
{{PC-461 class submarine chaser}}
Because of the large numbers of ships in this template, this will default to a collapsed list, like this:
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.