What log includes information on policy changes and routine items?

The passdown log is specifically designed to document the information that needs to be communicated between shifts or watch teams. This log includes details on policy changes and routine items that are essential for continuity and operational awareness. The passdown log serves as a key communication tool to ensure that all personnel are aware of important updates, ongoing situations, and any directives that have been issued. This helps in maintaining an unbroken flow of information, which is crucial for effective operations.

In contrast, other logs serve different purposes; for instance, a deck log primarily records navigational and operational activities aboard a vessel, while a command log focuses on officially documenting the command's directives and orders. The engineering log tracks the performance and status of machinery and equipment aboard a vessel. Each of these logs has a distinct function that differs from the primary focus of the passdown log, highlighting why the passdown log is the correct answer in this context.