Sailor Speak of the Week – Zulu Five Oscar

Definition

Noun

• Personnel assigned (usually by a higher authority) to attempt to board a vessel unauthorized as a test of security measures.

Origin

Unknown. Modern.

Comments

Otherwise known as a penetration test or red teaming. This may not be anything terribly formal, but a superior may simply select someone and order them to attempt to board a vessel that is in port (such as a ballistic missile submarine) as a test of how observant the crew is to outsiders. Gotta keep those nuclear weapons safe.

References

Crowell, J. (2003, October 31). Naval Terminology, Jargon and Slang FAQ Part 2 – N through Z. Retrieved from http://www.hazegray.org/faq/slang2.htm.