List of U.S. Navy acronyms and expressions

The United States Navy, like any organization, produces its own acronyms and abbreviations, which often come to have meaning beyond their bare expansions. United States Navy personnel sometimes colloquially refer to these as NAVSpeak. Like other organizational colloquialisms, their use often creates or reinforces a sense of esprit and closeness within the organization.

For a comprehensive list of unit organizations in the United States Navy, see List of units of the United States Navy.

NNPTU :Naval Nuclear Power Training Unit. NUKE: Navy sailor trained in Nuclear power.

...
Wikipedia