Who provides overall guidance to the Navy regarding ship sanitation?

The correct answer is the CDC Division of Global Migration and Quarantine because this division is responsible for safeguarding public health on ships through the establishment of sanitation standards and procedures. The Centers for Disease Control and Prevention (CDC) plays a crucial role in preventing the spread of communicable diseases by regulating ship sanitation practices, especially considering that Navy vessels often dock in ports around the world where they could be exposed to various health risks.

This division specifically focuses on issues related to travelers and migration, and it provides guidance that helps ensure that Navy ships maintain a safe and healthy environment for their crew, as well as for port communities. By setting protocols and offering recommendations, the CDC Division of Global Migration and Quarantine ensures that sanitation practices meet health regulations and standards necessary to mitigate outbreaks of disease on naval vessels.