Final answer:
The date used in the letterhead of Navy correspondence is the current date, which ensures that communications are properly contextualized within the correct timeframe.
Step-by-step explanation:
The date used in the letterhead of Navy correspondence is the current date. This refers to the date on which the correspondence is actually being sent or dispatched. It is essential for keeping the records timely and ensuring that the communication is contextualized with the correct timeframe. Using the current date in the letterhead aligns with standard professional practice in managing correspondence within the military and other organizational structures. It is not the date of receipt, date of dispatch, nor the date of drafting that is used for the letterhead.