Final answer:
The specific number of months before a sailor's projected rotation date when the orders negotiation window opens varies according to naval guidelines. This period allows for assignment planning and a smooth transition. Historical navigational techniques involving the sun are noted for context.
Step-by-step explanation:
The orders negotiation window for a sailor typically opens a specific number of months before the sailor's projected rotation date. This time frame is provided to allow sailors to plan and negotiate their next assignments and to ensure a smooth transition from one duty station to another.
While the exact number of months before the projected rotation date may vary by navy or maritime service policies, it generally falls within established military personnel guidelines and procedures. Therefore, it's crucial for sailors to be aware of this period and to prepare accordingly for their future placement.
To connect the concept relevant to the question, historical methods of navigation at sea were mentioned, where seafarers could determine their latitude by measuring the position of the noontime Sun. Navigation tables and formulas also provided support for calculating the proper angles necessary for accurate navigation, especially on dates other than the equinoxes.