What does NTP 13 regulate regarding the national ensign?

NTP 13, or the Navy Telecommunications Procedure, specifically focuses on the proper display and handling of the national ensign, particularly during ceremonial occasions. This includes guidelines on when and how to display the ensign during specific events, ensuring that the flag is treated with the respect and dignity it deserves in ceremonial contexts. Such occasions can include raising the flag, formal events, and military ceremonies where the national ensign plays a significant symbolic role.

Considering the other options, daily display regulations would be covered under different directives or policies that specify daily operational protocols. Ship's handling procedures generally pertain to navigational or operational practices on a vessel, while flags for joint operations typically discuss the displays of various flags during multi-service operations, which is not the primary focus of NTP 13. Therefore, the focus on ceremonial occasions aligns perfectly with the content and purpose of NTP 13.